Rice finding 1363
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).
upper bound: results <LOD set to LOD; detection rate 26.2%. LOD values not reported.
HMI baseline position
Limited data: Held: UB (0.0292) is below the printed MB (0.0328), which is impossible under the stated substitution rule. Missing evidence never means low contamination.
Held: UB (0.0292) is below the printed MB (0.0328), which is impossible under the stated substitution rule.
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 (UB)
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.
upper bound: results <LOD set to LOD; detection rate 26.2%. LOD values not reported.
Held: UB (0.0292) is below the printed MB (0.0328), which is impossible under the stated substitution rule.
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 | UB 0.0292 | 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.