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Fine muted-green matcha powder and a plain bowl of green tea illustrating matcha powder ingredient context.

Heavy metals in Matcha powder

Lead, cadmium, total arsenic and total mercury in matcha powder: monitoring results, studies, references by form and basis, limits, testing and controls.

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Matcha powder in the HMI library has 385 reported results for lead, cadmium, total arsenic, total mercury, nickel, chromium, aluminium, tin, uranium, Co, Cu, Fe, Mn, Zn, Se, Ag, Ba, Be, Ca, Ce, Cs, Ga, Ho, K, Li, Mg, Na, P, Sr, Ta, Ti and Tl from 2 sources.1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source →2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source →

Matcha powder overview

Matcha powder in the HMI library has 385 reported results for lead, cadmium, total arsenic, total mercury, nickel, chromium, aluminium, tin, uranium, Co, Cu, Fe, Mn, Zn, Se, Ag, Ba, Be, Ca, Ce, Cs, Ga, Ho, K, Li, Mg, Na, P, Sr, Ta, Ti and Tl from 2 sources.1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source →2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source →

รัสริณทร์ et al. 2026 reported lead at 404 µg/kg (mean ± 267 SD), cadmium at 30.6 µg/kg (mean ± 25 SD), total arsenic at 43.1 µg/kg (mean ± 49.2 SD) and total mercury at 11.7 µg/kg (mean ± 4.93 SD) in matcha powder, powder or ground from all 12 retail products, Thailand.1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source →

For a buyer the practical points are the form bought, the basis a result is reported on, where the matcha powder came from and the laboratory’s reporting limit. Testing finds contamination but does not remove it.

What counts as matcha powder

This page covers matcha powder, powder or ground (385 results).1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source →2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source →

Results stay on the basis each source reports: as sold or fresh weight, dry weight, or unstated. Dry-weight, as-sold and unstated results are never pooled, and no moisture conversion is applied.

Heavy metal contamination profile of matcha powder

The table holds every extracted matcha powder result: one row for each statistic a source reports for a form, group and metal, 385 rows in all, grouped by metal and form; percentiles, ranges and maxima for the same samples as a mean or median are shown on that row.1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source →2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source → Monitoring medians are HMI calculations from individual submissions; non-detects remain intervals between zero and the reporting limit and are never read as zero.

65 rows can be rated against an HMI reference for the same form and basis, 286 rows have a direct same-study comparison, and the rest stay unrated with the reason recorded.

Comparison methods and scope

Each row is one statistic a source reports for one form of matcha powder, group and metal; percentiles, ranges and maxima reported for the same samples as a mean or median are shown on that row. Different forms and preparation states are kept apart, and dry-weight results never share a reference with as-sold or fresh-weight results. Ratings place a result against an HMI reference built from monitoring results and ordinary-setting medians for the same form and basis. Same-study contrasts compare a contaminated or treated site with its control, targeted with random sampling, a prepared form with the unprocessed one, or one group of a study with the median of its other groups. Held rows failed a check against their own source and are shown but not compared.

About this table
Food formCollection scopeFindingComparisonEvidence
Matcha powder findings from monitoring programmes, total diet studies and every extracted field, market and contaminated-site study, in µg/kg with each source’s form, basis, statistic and censoring retained.
Food formCollection scopeFinding (µg/kg)ComparisonEvidence
23 findings · 2 studies
Matcha powder, powder or groundรัสริณทร์ et al. 2026all 12 retail products, ThailandCollection date unreportedAs sold / freshmean.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 01, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 02, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 03, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 04, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 05, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 06, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 07, origin Thailand, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 08, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 09, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 10, origin Japan, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 11, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 12, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019not detected.
23 findings · 2 studies
Matcha powder, powder or groundรัสริณทร์ et al. 2026all 12 retail products, ThailandCollection date unreportedAs sold / freshmean.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 01, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 02, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 03, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 04, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 05, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 06, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 07, origin Thailand, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 08, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 09, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 10, origin Japan, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 11, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 12, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
23 findings · 2 studies
Matcha powder, powder or groundรัสริณทร์ et al. 2026all 12 retail products, ThailandCollection date unreportedAs sold / freshmean.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 01, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 02, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 03, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 04, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 05, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 06, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 07, origin Thailand, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 08, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 09, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 10, origin Japan, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 11, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 12, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
23 findings · 2 studies
Matcha powder, powder or groundรัสริณทร์ et al. 2026all 12 retail products, ThailandCollection date unreportedAs sold / freshmean.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 01, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 02, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 03, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 04, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 05, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 06, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 07, origin Thailand, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 08, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 09, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 10, origin Japan, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 11, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 12, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
23 findings · 2 studies
Matcha powder, powder or groundรัสริณทร์ et al. 2026all 12 retail products, ThailandCollection date unreportedAs sold / freshmean.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 01, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 02, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 03, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 04, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 05, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 06, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 07, origin Thailand, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 08, origin Japan, Premium gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 09, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 10, origin Japan, Culinary gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 11, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundรัสริณทร์ et al. 2026retail product 12, origin Japan, Ceremonial gradeCollection date unreportedAs sold / freshsample value.
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019not detected.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019not detected.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019not detected.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019not detected.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
10 findings · 1 study
Matcha powder, powder or groundKoláčková et al. 2020retail product 12017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 22017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 32017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 42017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 52017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 62017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 72017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 82017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 92017–2019mean.
Matcha powder, powder or groundKoláčková et al. 2020retail product 102017–2019mean.
Shared dataset methods and interpretation

Source summaries retain their original statistic, material, basis and censoring. Each source drawer identifies methods and overlapping samples. No matched reference or pooled distribution is inferred.

HMI matcha powder Pb reference · Matcha powder, powder or ground

Reference and scope

HMI matcha powder Pb reference · Matcha powder, powder or ground. Matcha powder, powder or ground; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference246291518
Alternative weighting246291518

12 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
รัสริณทร์ et al. 202612100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

รัสริณทร์ et al. 2026 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-7f18475e6dc8:27fab1a834cf

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

HMI matcha powder Pb reference · Matcha powder, powder or ground, dry weight

Reference and scope

HMI matcha powder Pb reference · Matcha powder, powder or ground, dry weight. Matcha powder, powder or ground; Dry weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference≤0.01≤0.01≤0.01
Alternative weighting≤0.01≤0.01≤0.01

4 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
Koláčková et al. 20204100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a dry weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

Koláčková et al. 2020 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-45f3f6068692:16c393c12d0d

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

HMI matcha powder Cd reference · Matcha powder, powder or ground

Reference and scope

HMI matcha powder Cd reference · Matcha powder, powder or ground. Matcha powder, powder or ground; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference22.823.924.4
Alternative weighting22.823.924.4

12 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
รัสริณทร์ et al. 202612100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

รัสริณทร์ et al. 2026 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-a67f1a6e444f:3ddaa7a87e8a

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

HMI matcha powder tAs reference · Matcha powder, powder or ground

Reference and scope

HMI matcha powder tAs reference · Matcha powder, powder or ground. Matcha powder, powder or ground; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference21.825.135.7
Alternative weighting21.825.135.7

12 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
รัสริณทร์ et al. 202612100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

รัสริณทร์ et al. 2026 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-63e20e65b633:6782202b2886

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

HMI matcha powder tHg reference · Matcha powder, powder or ground

Reference and scope

HMI matcha powder tHg reference · Matcha powder, powder or ground. Matcha powder, powder or ground; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference8.4610.814.8
Alternative weighting8.4610.814.8

12 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
รัสริณทร์ et al. 202612100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

รัสริณทร์ et al. 2026 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-6215f837e0f0:a13525e7bd41

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

HMI matcha powder Al reference · Matcha powder, powder or ground

Reference and scope

HMI matcha powder Al reference · Matcha powder, powder or ground. Matcha powder, powder or ground; As sold, as eaten or fresh weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference522000638000738000
Alternative weighting522000638000738000

12 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
รัสริณทร์ et al. 202612100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a as sold, as eaten or fresh weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

รัสริณทร์ et al. 2026 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-327662077f0c:a974d36404d3

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

HMI matcha powder U reference · Matcha powder, powder or ground, dry weight

Reference and scope

HMI matcha powder U reference · Matcha powder, powder or ground, dry weight. Matcha powder, powder or ground; Dry weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference≤0.01≤0.01≤0.01
Alternative weighting≤0.01≤0.01≤0.01

10 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
Koláčková et al. 202010100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a dry weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

Koláčková et al. 2020 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-95d3da116b0b:86757d16004f

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

HMI matcha powder Ga reference · Matcha powder, powder or ground, dry weight

Reference and scope

HMI matcha powder Ga reference · Matcha powder, powder or ground, dry weight. Matcha powder, powder or ground; Dry weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference≤0.01≤0.01≤0.01
Alternative weighting≤0.01≤0.01≤0.01

10 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
Koláčková et al. 202010100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a dry weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

Koláčková et al. 2020 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-0e5fbe547d9b:541473b726c7

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

HMI matcha powder Ta reference · Matcha powder, powder or ground, dry weight

Reference and scope

HMI matcha powder Ta reference · Matcha powder, powder or ground, dry weight. Matcha powder, powder or ground; Dry weight, µg/kg; no moisture conversion. Distribution of subgroup median concentration values.

Reference (µg/kg)Q1MedianQ3
Primary HMI reference≤0.01≤0.01≤0.01
Alternative weighting≤0.01≤0.01≤0.01

10 reference units; 1 sampling family. Counts describe evidence units, not independent studies or certainty.

Contributing familyReference unitsWeight
Koláčková et al. 202010100%

Methods

HMI pools subgroup medians for matcha powder, powder or ground on a dry weight basis: monitoring results summarized as one median per reporting region, sampling type and collection year, total diet composites and printed sample values as single observations, and printed subgroup medians from ordinary farms or markets. Each sampling family has equal total weight. Non-detects stay as zero-to-limit intervals, so quartiles carry lower and upper bounds. Means, ranges and maxima never enter as observations. Other forms, other bases, targeted sampling and results from mining, industrial, wastewater-affected, experimental, fertiliser or manufacturer settings are kept out of this reference.

Inverse weighted empirical CDF; midpoint at exact cumulative-weight boundaries. At least four reference units and a definitely positive Q1 to Q3 spread are required. This is a display eligibility rule, not statistical validation.

Limitations

Koláčková et al. 2020 is the only compatible sampling family for matcha powder, powder or ground on this basis in the completed matcha powder ledger, so this single-family reference cannot represent other markets. Reporting regions and purchase markets are not growing areas. Non-detects with differing limits widen the bounds. A position is descriptive concentration, not a safety or compliance judgment.

Admitted source families

Reference version and interpretation

Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.

hmi-pooled-reference-v2:matcha-powder-cdddc9821adf:0929621f5cf2

The reference is computed by HMI from admitted evidence, not copied from a study baseline. It describes the evidence currently in this scope; it is not a worldwide or current-lot benchmark. Source, year and region filters do not change it. Different HMI scopes are not one common ranking.

1 dataset

How metals reach matcha powder

No study in the library compared matcha powder from contaminated and ordinary settings, so the routes by which metals reach it are not measured here.

Which forms and regions measured lower

The HMI reference for lead in matcha powder, powder or ground pools 12 subgroup units from 1 sampling family, with a median of 291 µg/kg and a middle half spanning 246 (lower quartile) and 518 µg/kg (upper quartile).1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source → For lead in matcha powder, powder or ground, the reference median was below 0.01 µg/kg, with a middle half from below 0.01 to below 0.01 µg/kg across 4 units.2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source → For cadmium in matcha powder, powder or ground, the reference median was 23.9 µg/kg, with a middle half from 22.8 to 24.4 µg/kg across 12 units.1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source →

In one study, lead across 12 groups of matcha powder ranged from 184 µg/kg (retail product 08, origin Japan, Premium grade) to 1,040 µg/kg (retail product 07, origin Thailand, Culinary grade); the lowest is the lowest observed in that study, not an established sourcing preference.1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source → In another study, lead across 6 groups of matcha powder ranged from 0.05 µg/kg (retail product 4) to 1.82 µg/kg (retail product 1); the lowest is the lowest observed in that study, not an established sourcing preference.2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source →

Processing, cooking and preparation

No processing study for metals in this food is in the library yet.

Mitigation for matcha powder

Lot testing against the applicable limit is the check that can be verified.

No measured way to lower metals in this food is in the library yet.

Trade-offs and limits of controls

Metals do not move together, so a lot that passes a lead limit says little about cadmium, arsenic or nickel unless those are tested as well.

Testing matcha powder for metals

Results depend on the method and its reporting limit. Reporting limits for lead were 0.01 µg/kg where sources stated them.2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source →

A useful lot result names the form, the basis and a quantification limit well below the limit that applies.

Buying and verifying matcha powder

No maximum level for metals in matcha powder was verified from primary text for this page; buyers should confirm the limit that applies in the destination market.

Exposure from matcha powder

No source in the library converted matcha powder concentrations into a verified estimate of intake for a defined population. Concentrations describe the food, not individual risk.

Evidence review and remaining gaps

Every source record that names matcha powder was decided on its content: 2 occurrence extracted, 2 records in all. The occurrence table renders every extracted result; held values remain visible with their reason.

References identify the sources used in these answers. The Sources index preserves additional discovery links; inclusion there does not mean a source has been reviewed for this assessment. Corrections, completed searches, new direct evidence and changes in requirements should reopen the relevant answer.

Matcha powder FAQs

What heavy metals are found in matcha powder?

The library reports lead, cadmium, total arsenic, total mercury, nickel, chromium, aluminium, tin, uranium, Co, Cu, Fe, Mn, Zn, Se, Ag, Ba, Be, Ca, Ce, Cs, Ga, Ho, K, Li, Mg, Na, P, Sr, Ta, Ti and Tl in matcha powder, most often lead, cadmium and total arsenic.1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source →2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source →

Which origins or products of matcha powder measured lowest?

In one study, lead across 12 groups of matcha powder ranged from 184 µg/kg (retail product 08, origin Japan, Premium grade) to 1,040 µg/kg (retail product 07, origin Thailand, Culinary grade); the lowest is the lowest observed in that study, not an established sourcing preference.1ด้วยเศียรเกล้า รัสริณทร์, บำรุงพืชน์ เอกราช · 2026Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)Journal of Environmental Education Medical and Health (Thailand), Vol. 11 No. 2, April-July 2026, pp. 1204-1212Read source → In another study, lead across 6 groups of matcha powder ranged from 0.05 µg/kg (retail product 4) to 1.82 µg/kg (retail product 1); the lowest is the lowest observed in that study, not an established sourcing preference.2Koláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, Lanczová N · 2020Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationJournal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof)Read source →

References

Works cited on this page, in citation-number order. See Sources for this page’s source inventory. Each title links to a source record with bibliographic details, reported findings, and document provenance.

  1. Determination of heavy metal contents in commercial matcha powder sold in Thailand (Thai: ปริมาณสารโลหะหนักตกค้างในผลิตภัณฑ์ผงมัทฉะที่จำหน่ายในประเทศไทย)ด้วยเศียรเกล้า รัสริณทร์ and บำรุงพืชน์ เอกราช · 2026 · so06.tci-thaijo.orgPeer-reviewed
  2. Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluationKoláčková T, Sumczynski D, Zálešáková L, Šenkárová L, Orsavová J, and Lanczová N · Journal of Food Composition and Analysis (2020), article 103581 (Journal Pre-proof) · 2020 · doi.org/10.1016/j.jfca.2020.103581Peer-reviewed

Sources

Browse Matcha powder Sources for sources cited on this page and additional discovery candidates. The searchable index distinguishes verified citation use from discovery relationships whose relevance has not been established.

Update history

22 October 2026: Rebuilt from every matcha powder record in the library: 2 occurrence sources, references by form and basis, same-study contrasts.

Referenced by

Graph View