Rice finding 550
Source evidence and comparison details for the Rice profile.
Brown rice (rice grain oven-dried at 60 °C for 48 h, then de-husked) · Cadmium (Cd) · 601 paired soil/rice grain field composites (5 subsamples per paddy field).
Selected finding and reference
601 paired soil/rice grain field composites (5 subsamples per paddy field). Basis: dry 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
2016–2020
No year-by-year sample register is reconstructed from this summary.
Geographic scope
Xiangtan
All samples in the study.
Sampling, analysis and reporting limits
Grain digested with concentrated HNO3 by microwave (CEM Mars); Cd by ICP-MS (PerkinElmer NexION 300) with In internal standard.
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 | 53.9% of rice grain samples exceeded the Chinese maximum permissible limit for Cd | none |
Abstract (page 1).
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.