Rice finding 1380
Source evidence and comparison details for the Rice profile.
Packed rice as sold (milling form not stated) · Lead (Pb) · 120 rice samples (triplicate analyses).
Selected finding and reference
120 rice samples (triplicate analyses). Basis: unspecified; samples oven-dried (80 C 2 h, then 105 C 6 h) before dry ashing for Cd/Pb, so values are likely dry-weight but the paper does not state the reporting basis.
No non-detects reported; LOD Cd 1, Pb 7, As 10 ug/kg; treatment of values below LOD not described
HMI baseline position
Limited data: Held: an overall SD of 0.001 mg/kg is implausible for 120 samples spanning the printed range; the +/- value may be a standard error or a misprint. Missing evidence never means low contamination.
Held: an overall SD of 0.001 mg/kg is implausible for 120 samples spanning the printed range; the +/- value may be a standard error or a misprint.
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
Collection date unreported
No year-by-year sample register is reconstructed from this summary.
Geographic scope
All samples
All samples in the study.
Sampling, analysis and reporting limits
Dry ashing (550 C) and HNO3 for Cd/Pb by graphite-furnace AAS (Varian AA-1275); HNO3 wet digestion for As by hydride-generation AAS.
No non-detects reported; LOD Cd 1, Pb 7, As 10 ug/kg; treatment of values below LOD not described
Held: an overall SD of 0.001 mg/kg is implausible for 120 samples spanning the printed range; the +/- value may be a standard error or a misprint.
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 | The Pb levels ranged from 0.108 to 0.234 mg/kg, with a mean level of 0.153±0.001 mg/kg | mg/kg x 1000 |
Original SD: 0.001 mg/kg.
Results 'Lead' paragraph, p.252; Figure 2.
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.