Rice finding 1342
Source evidence and comparison details for the Rice profile.
Polished rice · Lead (Pb) · 27 retail rice samples (each analysed in triplicate).
Selected finding and reference
27 retail rice samples (each analysed in triplicate). Basis: unspecified (as-sold grain; no dry-weight correction stated).
handling of censored samples not stated
HMI baseline position
Limited data: Held: text gives 0.101 as the polished mean of the two quantified samples; 0.097 cannot be reproduced from Table 5 and the substitution rule for 25 censored samples is not stated. Missing evidence never means low contamination.
Held: text gives 0.101 as the polished mean of the two quantified samples; 0.097 cannot be reproduced from Table 5 and the substitution rule for 25 censored samples is not stated.
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
2013–2015
No year-by-year sample register is reconstructed from this summary.
Geographic scope
Polished (present study)
Rice variety or type within one study.
Sampling, analysis and reporting limits
Microwave-assisted HNO3/H2O2 digestion; ICP-MS (PerkinElmer Elan DRC II); As corrected for 40Ar35Cl+; Pb mean of 206/207/208 isotopes.
handling of censored samples not stated
Held: text gives 0.101 as the polished mean of the two quantified samples; 0.097 cannot be reproduced from Table 5 and the substitution rule for 25 censored samples is not stated.
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 | Present study Pb 0.097 | mg/kg x 1000 |
Table 6 (p.6), 'Present study' Pb row, Polished column.
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.