Overview
Source-grounded narrative on this page is populated incrementally from the routed source pages; values for analytes marked as data gap below have not yet accumulated 2+ A-tier contributing sources.
Heavy metal contamination profile
Per-analyte snapshot derived from the machine-readable contamination_profile in the frontmatter above. data gap indicates the literature has been reviewed for this commodity-analyte combination and no usable occurrence data was found (a finding, not a placeholder). The Key sources column shows the top 2-3 contributing sources by year and sample size, with numbered wikilink aliases.
| Analyte | Coverage | Typical (ppb) | Confidence | Key sources |
|---|---|---|---|---|
| Pb | n=2 | 200–500 | low | — |
| Cd | n=2 | 40–80 | low | — |
| iAs | data gap | — | — | — |
| tAs | data gap | — | — | — |
| tHg | data gap | — | — | — |
| Ni | data gap | — | — | — |
| Al | data gap | — | — | — |
| Cr | data gap | — | — | — |
| Sn | data gap | — | — | — |
| U | data gap | — | — | — |
References
Works cited in this page’s text, in first-appearance order. This is not the full corpus for this page; it is only what the prose above draws on. The complete set of sources is listed under Sources below. Each title links to its source record, which carries the ingest receipt, the extracted values, and the file hash of the document it was built from.
- The health risk assessment of heavy metals in vegetables grown in Babol city, IranReview
- Determination of Heavy Metals Concentration in Traditional Herbs Commonly Consumed in the United Arab EmiratesReview
- General Standard for Contaminants and Toxins in Food and Feed (CXS 193-1995)Government
Sources
Auto-generated from source-page frontmatter. The "Used on this page for" column is populated by the orchestrator's POPULATE-SOURCE-LEGEND action; pending entries appear as *[awaiting synthesis]*.
| # | Citation | Year | Type | Used on this page for |
|---|---|---|---|---|
| 1 | Masri et al. 2025. Assessing Dietary Consumption of Toxicant-Laden Foods and Beverages by Age and Ethnicity in California: Implications for Proposition 65, Nutrients | 2025 | Peer-reviewed | US Pb, Cd, tAs, MeHg occurrence in Cross-sectional online dietary survey (Qualtrics) administered between 1 March and 15 June 2023 to Southern California residents (adults… (n=186) |
| 2 | Abdolahpour et al. 2023. The health risk assessment of heavy metals in vegetables grown in Babol city, Iran, International Archives of Health Sciences | 2023 | Peer-reviewed | IR Pb, Cd occurrence in Eight vegetable types (parsley, spinach, basil, tomatoes, cucumbers, potatoes, onions, beans) from Babol, Mazandaran Province, northern Iran; 4… (n=32) |
| 3 | Bora et al. 2022. Quantification and Reduction in Heavy Metal Residues in Some Fruits and Vegetables: A Case Study Galați County, Romania, Horticulturae | 2022 | Peer-reviewed | RO/EU tAs, Cd, Pb, Zn occurrence in 80 fruit and vegetable samples from Galați County, Romania (45 from vegetable/fruit market, 35 from amateur farmers), collected… (n=80) |
| 4 | Fischer et al. 2022. The Mercury Concentration in Spice Plants, Processes | 2022 | Peer-reviewed | PL/EU tHg occurrence in Four leafy spice species (peppermint Mentha piperita, basil Ocimum basilicum, lovage Levisticum officinale, parsley Petroselinum crispum). Commercial products… (n=48) |
| 5 | Marinescu et al. 2020. Assessment of heavy metals content in some medicinal plants and spices commonly used in Romania, Farmacia | 2020 | Peer-reviewed | RO tAs, Cd, Cu, Fe, tHg, Pb occurrence in Forty-two Romanian medicinal-plant and spice samples: six medicinal plant species and six culinary spice/herb species, including packaged and… (n=42) |
| 6 | Ghasemidehkordi et al. 2018. Concentration of lead and mercury in collected vegetables and herbs from Markazi province, Iran: a non-carcinogenic risk assessment, Food and Chemical Toxicology 113:204-210 | 2018 | Peer-reviewed | IR Pb, tHg occurrence in Ten species of green leafy vegetables and herbs (Allium ampeloprasum L. [leek], A. wakegi L. [Welsh/Japanese bunching onion],… (n=160) |
| 7 | Dghaim et al. 2015. Determination of Heavy Metals Concentration in Traditional Herbs Commonly Consumed in the United Arab Emirates, Journal of Environmental and Public Health | 2015 | Peer-reviewed | UAE Pb, Cd occurrence in Seven traditional herbs (parsley, basil, sage, oregano, mint, thyme, chamomile) purchased from 13 sources in Dubai markets; fresh… (n=81) |
Why this commodity accumulates heavy metals
Parsley (Petroselinum crispum) is an Apiaceae leafy herb cultivated globally. As a leafy plant, parsley accumulates Cd and Pb via the leafy-vegetable pathway documented for leafy greens: aerial deposition plus rapid xylem-to-leaf metal transport. The Iranian Babol vegetable survey by Abdolahpour 2023 and the UAE traditional-herb survey by Dghaim 2015 document parsley as an Apiaceae herb sitting at the moderate-to-elevated Pb/Cd end of regional herb-vegetable surveys. Parsley is consumed in much smaller per-serving quantities than spinach or lettuce (typically as garnish, in tabbouleh, in pesto-and-sauce applications), but the per-mass metal load on parsley leaves can be substantial because of the leafy-tissue accumulation pathway. Dried parsley (a common pantry-staple form used in seasoning) concentrates per-mass metals via moisture removal at the typical 8-10× factor for dehydrated herbs.
The HMTc panel concerns for parsley are Pb and Cd at concentrated per-mass levels. Parsley is in Cat 7 spices when dried and incorporated as a culinary seasoning. The data gap in this body table reflects sparse parsley-specific quantitative data; the synthesis is anchored in the Abdolahpour 2023 and Dghaim 2015 regional surveys and the broader leafy-greens and spices corpus.
Ranges by source, region, and variety
Variance within parsley tracks source-region soil profile (industrial-region or urban-garden production carries substantially elevated Pb; commercial herb-farm production sits at moderate baseline), cultivar (curly-leaf parsley, flat-leaf/Italian parsley, Hamburg parsley — Hamburg parsley grown for the root accumulates root-vegetable Pb in the root and leafy-vegetable Pb in the leaves), and growing-system (greenhouse and hydroponic parsley carries lower metals; field-grown sits at baseline). Imported herbs from documented industrial-region production per Dghaim 2015 carry higher per-mass loads than developed-market commercial supply.
Processing effects
Parsley processing for fresh-market consumption involves harvest, washing, and packaging. Industrial dehydration for dried parsley involves washing, drying (typically forced-air drying at 50-65°C), milling, and packaging; dehydration concentrates per-mass metals at the moisture-removal factor. Parsley powder and parsley-flake seasoning products concentrate per-mass metals at the dried-herb baseline. Frozen parsley retains the fresh per-mass profile. Parsley-containing prepared products (tabbouleh, chimichurri, pesto, parsley-pesto, parsley-sauce) dilute the parsley fraction with other ingredients.
Ingredient-derivative risk
Parsley derivatives include fresh parsley, dried parsley (and parsley flakes), parsley powder, frozen parsley, parsley pesto, and parsley-containing prepared sauces and salads. Dried and powdered parsley carry per-mass metals at concentrated levels and should be considered in spice-and-herb compliance contexts. Parsley root (Hamburg parsley) and parsley seed (an Apiaceae spice) carry separate per-derivative profiles. Parsley essential oil partitions metals to non-lipid fractions.
Mitigation options
Sourcing levers (Supply-chain screening) are dominant for parsley as a leafy-herb spice. Source-region soil verification; supplier audit programs for herb farms; greenhouse-and-hydroponic production specification; and contractual Pb/Cd ceiling on incoming parsley supply.
Agronomic levers (Agronomic mitigation) operate at the parsley-cultivation stage. Soil pH management; soil amendments; cultivar selection; and greenhouse-and-hydroponic production to limit direct soil uptake.
Processing levers (Processing mitigation) include washing optimization (limited effect because Cd is internalized in leaf tissue); processing-equipment material specification.
Formulation levers (Formulation mitigation) include substituting parsley with lower-Pb herbs (cilantro, basil) where the matrix permits; reducing the parsley fraction in herb-based seasoning blends.
Testing and QC levers (Testing and quality-control mitigation) include lot-level Pb, Cd testing on incoming parsley and parsley products. ICP-MS is the standard analytical platform.
Packaging and storage levers (Packaging and storage mitigation) are minor; standard storage-condition specifications apply to dried parsley to prevent moisture re-uptake.
Regulatory limits that apply
- eu-2023-915 — EU Reg. 2023/915 sets maximum levels for Pb in leafy vegetables at 100 ppb (general leafy vegetables); Cd at 200 ppb (general leafy vegetables); these apply to fresh parsley. Dried parsley and parsley powder are covered under the spices category with separate maximum levels.
- FDA Closer to Zero infant-food framework applies to parsley-containing infant products.
- Codex Alimentarius CXS 193-1995 (Codex 1995) sets leafy-vegetable and spice category limits.
- California Prop 65 (california-prop65) Pb MADL applies to parsley products sold in California; the broader spice and herb Prop 65 enforcement context applies to dried-parsley products.
Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.
| Commit | Date | Change | Description |
|---|---|---|---|
| a8052bb | 2026-08-09 | major | 3 sources added; 11 sections added; narrative text revised |