Rice finding 1538
Source evidence and comparison details for the Rice profile.
Dehusked rice grain (brown rice), field-collected · Lead (Pb) · 40 composite rice samples (3–5 subsamples, ≥300 g) per grid site.
Selected finding and reference
40 composite rice samples (3–5 subsamples, ≥300 g) per grid site. Basis: dry weight.
no non-detects reported; LOD not reported
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
Shifang area
Sampling site within one study.
Sampling, analysis and reporting limits
HNO3/HClO4 (5:1) digestion; Pb and Cd by graphite-furnace AAS (PE Analyst 800); As and Hg by atomic fluorescence (AFS-830a).
no non-detects reported; LOD 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 |
|---|---|---|
| range | 0.06–0.58 | mg/kg x 1000 |
Table 2, row Pb (mg kg−1), Rice (n=40) columns; p. 5.
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.