Rice finding 2633
Source evidence and comparison details for the Rice profile.
Brown rice (husked grain) · Dimethylarsinic acid (DMA) · Sample count unreported.
Selected finding and reference
Sample count unreported. Basis: unspecified (grain digested/enzymatically extracted; drying of chronosequence grain not stated).
not reported
HMI baseline position
Limited data: Reported as % of total grain As as methylated As; a concentration reference in µg/kg cannot apply. Missing evidence never means low contamination.
Reported as % of total grain As as methylated As; a concentration reference in µg/kg cannot apply.
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
Cixi
Sampling site within one study.
Sampling, analysis and reporting limits
Total As: HNO3 digestion, ICP-MS; species: enzymatic extraction of grain, HPLC-ICP-MS (C18 for DMA/methylated thioarsenates; PRP-X100 for oxyarsenates).
not reported
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 |
|---|---|---|
| sample_value | mAs proportions peaked at intermediate ages (27% in husks and 26% in brown rice at 500 y) and then declined to 21% (husks) and 16% (brown rice) by 2,000 y | not convertible (proportion of total As, no concentration) |
Results p.2; Fig. 1E; SI Fig. S1.
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.