Rice finding 1793
Source evidence and comparison details for the Rice profile.
Rice grain, husk removed by mortar and pestle (dehusked/brown grain), IRRI variety unspecified · Nickel (Ni) · Sample count unreported.
Selected finding and reference
Sample count unreported. Basis: unspecified (dry-weight basis stated only for soil).
no non-detects reported for grain metals
HMI baseline position
Limited data: Held: 55,300 µg/kg (55.3 mg/kg) Ni in grain is extreme for rice grain; it is internally consistent with Table 5 ADD (1.74 mg/kg/day) but exceeds Field-III stem Ni (3.02×10^3 µg/kg) by 18-fold and is unverified by any grain CRM. Mean of repeat measurements per field (statistic inferred from 'calculating the ADD using mean concentrations'); number of plants/grain subsamples per field not reported. Contaminated/industrial-are Missing evidence never means low contamination.
Held: 55,300 µg/kg (55.3 mg/kg) Ni in grain is extreme for rice grain; it is internally consistent with Table 5 ADD (1.74 mg/kg/day) but exceeds Field-III stem Ni (3.02×10^3 µg/kg) by 18-fold and is unverified by any grain CRM. Mean of repeat measurements per field (statistic inferred from 'calculating the ADD using mean concentrations'); number of plants/grain subsamples per field not reported. Contaminated/industrial-are
Reference version and interpretation
Frozen evidence selection: 2026-10-22. Method: hmi-pooled-reference-v2.
No admitted reference
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.
Collection period
2023
No year-by-year sample register is reconstructed from this summary.
Geographic scope
Field-III rice grain
Sampling site within one study.
Sampling, analysis and reporting limits
HNO3/HClO4 digestion of ~0.5 g, ICP-MS PerkinElmer NexION 2000 in He collision mode.
no non-detects reported for grain metals
Held: 55,300 µg/kg (55.3 mg/kg) Ni in grain is extreme for rice grain; it is internally consistent with Table 5 ADD (1.74 mg/kg/day) but exceeds Field-III stem Ni (3.02×10^3 µg/kg) by 18-fold and is unverified by any grain CRM. Mean of repeat measurements per field (statistic inferred from 'calculating the ADD using mean concentrations'); number of plants/grain subsamples per field not reported. Contaminated/industrial-are
Shared samples and study overlap
Subgroup rows, statistics of the same subgroup and the study total share samples; they are not independent results.
Each table row describes a food/analyte result. Repeated rows do not add independent samples or datasets. No cross-study trend is calculated in this comparison mode.
Reported values, conversion and source locator
| Source statistic | Original result | Displayed unit conversion |
|---|---|---|
| mean | Field-III Rice grain Ni 5.53×10^4 | none |
Table 3 (rotated), Rice grain row, page 8 of 16.
No moisture, cooking-yield or species conversion is applied to the original finding above. Any basis conversion used for its HMI comparison is stated separately with the numerical target.