Rice finding 2387
Source evidence and comparison details for the Rice profile.
Rice grain unspecified (market rice, crushed to powder before digestion) · Inorganic arsenic (iAs) · 1239 rice samples.
Selected finding and reference
1239 rice samples. Basis: unspecified (no drying or moisture correction stated).
Source substitutes LOD/2 for results below LOD (section 2.4); LOD values are not reported. Statistics include those substituted values; minima (and medians/percentiles where the detection rate is below 50%) equal the substitution value, not a measurement.
HMI baseline position
Limited data: The source reports a range, percentile or extreme value; only a mean, median or sample result can be positioned against a reference. Missing evidence never means low contamination.
The source reports a range, percentile or extreme value; only a mean, median or sample result can be positioned against a reference.
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
2020–2022
No year-by-year sample register is reconstructed from this summary.
Geographic scope
Eastern Henan
Reported growing area.
Sampling, analysis and reporting limits
ICP-MS after microwave digestion of 0.3 g powder in 7 mL HNO3 (section 2.2); no arsenic speciation step described.
Source substitutes LOD/2 for results below LOD (section 2.4); LOD values are not reported. Statistics include those substituted values; minima (and medians/percentiles where the detection rate is below 50%) equal the substitution value, not a measurement.
Source inconsistency noted (does not affect this value): species identity (iAs vs total As) is not verifiable from the reported method.
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 |
|---|---|---|
| range | Min 0.048; Max 0.180 | mg/kg x 1000 |
Table 4 (levels of heavy metals in rice from different areas in Henan province, mg/kg), Eastern Henan rows, column As; page 6.
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.