Rice finding 549
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) · 200 paired soil/rice grain field composites (5 subsamples per paddy field).
Selected finding and reference
200 paired soil/rice grain field composites (5 subsamples per paddy field). Basis: dry weight (oven-dried 60 °C, 48 h).
not reported; minima (0.003-0.02 mg/kg) printed as measured values
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
2016
No year-by-year sample register is reconstructed from this summary.
Geographic scope
Xiangtan, Hunan, 2016 survey
Collection year within one 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; minima (0.003-0.02 mg/kg) printed as measured values
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 | ranging from 0.02 to 3.61 mg/kg (mean 0.69 mg/kg, median 0.54 mg/kg) in the 2016 survey | mg/kg x 1000 |
Section 3.1 Paired soil and rice samples, paragraph 2 (page 4); Fig. 2b.
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.