Rice finding 1535
Source evidence and comparison details for the Rice profile.
Rice grain, edible part (form unspecified; washed, oven-dried at 70-80 °C) · Lead (Pb) · 57 composite samples (sub-samples mixed per sampling station).
Selected finding and reference
57 composite samples (sub-samples mixed per sampling station). Basis: dry weight.
No non-detects reported for rice; LOD/LOQ not reported
HMI baseline position
Limited data: Held: Pb mean 4.34 mg/kg dw is ~20x typical contaminated-area rice; text compares Pb to 'MAC of As (0.1 mg/kg)' ('43 times'), i.e. the comparison limit is mislabelled; Table 1 lists FAO/WHO Pb 0.1 whereas the Codex rice Pb ML is 0.2 mg/kg. Samples are station composites; n=57 rice composites of 75 crop samples total. Missing evidence never means low contamination.
Held: Pb mean 4.34 mg/kg dw is ~20x typical contaminated-area rice; text compares Pb to 'MAC of As (0.1 mg/kg)' ('43 times'), i.e. the comparison limit is mislabelled; Table 1 lists FAO/WHO Pb 0.1 whereas the Codex rice Pb ML is 0.2 mg/kg. Samples are station composites; n=57 rice composites of 75 crop samples total.
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
Tangail industrial-area
Sampling site within one study.
Sampling, analysis and reporting limits
Microwave digestion (HNO3/HCl, closed Teflon vessel), ICP-MS Agilent 7700.
No non-detects reported for rice; LOD/LOQ not reported
Held: Pb mean 4.34 mg/kg dw is ~20x typical contaminated-area rice; text compares Pb to 'MAC of As (0.1 mg/kg)' ('43 times'), i.e. the comparison limit is mislabelled; Table 1 lists FAO/WHO Pb 0.1 whereas the Codex rice Pb ML is 0.2 mg/kg. Samples are station composites; n=57 rice composites of 75 crop samples total.
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 | 4.34±4.35 | mg/kg x 1000 |
Original SD: 4.35 mg/kg dw.
Table 1 'Metal concentration (mg/kg dw) in food samples collected from Tangail industrial area, Bangladesh', Rice (n=57) rows.
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.