Rice finding 577
Source evidence and comparison details for the Rice profile.
Rice grain unspecified (Indica; oven-dried, ground) · Cadmium (Cd) · 14 paired rice grain/soil field composites (>=5 subsamples each); 14 per area.
Selected finding and reference
14 paired rice grain/soil field composites (>=5 subsamples each); 14 per area. Basis: dry weight (oven-dried 105 °C 1 h then 70 °C to constant weight).
not reported
HMI baseline position
Limited data: Reported as % of samples; a concentration reference in µg/kg cannot apply. Missing evidence never means low contamination.
Reported as % of samples; 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
2014
No year-by-year sample register is reconstructed from this summary.
Geographic scope
Yifeng (YF)
Sampling site within one study.
Sampling, analysis and reporting limits
Rice grain: 1.000 g digested with HClO4/HNO3 for 6 h; Cd and Zn by ICP-MS (XSERIES, Thermo). Bioaccessible Cd by RIVM in vitro digestion. Soil: HNO3/HClO4/HF total digestion; 0.01 M CaCl2 extraction.
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 |
|---|---|---|
| exceedance_rate | the Cd concentration percent over-abundance in the five areas was ... YF (42.86%) | none (percentage of samples; threshold 0.2 mg/kg = 200 µg/kg) |
Section 3.2 Total Cd concentration in rice grain, lines 223-228; page 12.
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.