Rice finding 457
Source evidence and comparison details for the Rice profile.
Brown and white U.S. market rice · Total arsenic (tAs) · 24 rice samples (market products).
Selected finding and reference
24 rice samples (market products). Basis: unspecified.
none
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
Collection date unreported
No year-by-year sample register is reconstructed from this summary.
Geographic scope
24 U.S. market rice samples
All samples in the study.
Sampling, analysis and reporting limits
Total As: HNO3/H2O2 digestion + ICP-AES (ref 5). Species: 2.0 M TFA extraction at 75 °C, 6 h; IC (AS16) - ICP-DRC-MS (75As16O at m/z 91).
none
Source inconsistency noted (does not affect this value): Table 1 minimum total As is 0.162 mg/kg (California W arborio), not 0.160; the text range may refer to the selection range from ref 5. Samples were deliberately selected from the high end of the survey distribution.
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 | Total As content in rice grain ... ranged from 0.160 to 0.710 mg kg-1 (5) | mg/kg x 1000 |
Materials and Methods, page 3861.
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.