Rice finding 1362
Source evidence and comparison details for the Rice profile.
Rice grain (form not stated; national standard 'rice' category, sampled as sold, edible portion crushed) · Lead (Pb) · 295 rice samples (295 Pb, 296 Cd, 290 As, 290 Hg).
Selected finding and reference
295 rice samples (295 Pb, 296 Cd, 290 As, 290 Hg). Basis: unspecified (as sold; samples cleaned of debris and crushed, no drying step stated).
median bound: results <LOD set to 1/2 LOD; detection rate 26.2%. LOD values not reported.
HMI baseline position
Limited data: Held: printed MB mean (0.0328) exceeds the UB mean (0.0292); with <LOD set to 1/2 LOD (MB) vs LOD (UB) the MB mean cannot exceed the UB mean. The text range 'rice products (0.0471-0.0543)' shows the same MB>UB pattern for rice products. One of the two cells is likely transposed or mis-printed. Missing evidence never means low contamination.
Held: printed MB mean (0.0328) exceeds the UB mean (0.0292); with <LOD set to 1/2 LOD (MB) vs LOD (UB) the MB mean cannot exceed the UB mean. The text range 'rice products (0.0471-0.0543)' shows the same MB>UB pattern for rice products. One of the two cells is likely transposed or mis-printed.
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
2017–2021
No year-by-year sample register is reconstructed from this summary.
Geographic scope
1a. Rice (MB)
All samples in the study.
Sampling, analysis and reporting limits
Microwave HNO3 digestion per GB 5009.11/12/15/17/123/268; AAS, AFS or ICP-MS at regional CDC laboratories.
median bound: results <LOD set to 1/2 LOD; detection rate 26.2%. LOD values not reported.
Held: printed MB mean (0.0328) exceeds the UB mean (0.0292); with <LOD set to 1/2 LOD (MB) vs LOD (UB) the MB mean cannot exceed the UB mean. The text range 'rice products (0.0471-0.0543)' shows the same MB>UB pattern for rice products. One of the two cells is likely transposed or mis-printed.
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 |
|---|---|---|
| mean | 1a. Rice | Pb Number of samples 295 | >LOD (%) 26.2 | MB 0.0328 | mg/kg x 1000 |
Table 2 (lower, median and upper bound of mean concentrations), row '1a. Rice', p.8.
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.