Rice finding 1467
Source evidence and comparison details for the Rice profile.
Polished rice · Lead (Pb) · Sample count unreported.
Selected finding and reference
Sample count unreported. Basis: unspecified.
no non-detects reported for this cell; source does not describe non-detect handling
Low / Moderate / High rating
Direct comparison only: the reported summaries or non-overlapping reporting bounds establish the displayed descriptive direction, but do not supply an eligible reference distribution for Low / Moderate / High. A reporting bound remains a bound; equal rounded summaries do not establish equivalence.
Selected comparison
Lower10 versus 40 µg/kgPolished rice, Region of Arequipa: 10 µg/kg (mean ± 10 SD); the study total (Rice): 40 µg/kg (mean ± 30 SD). Section 3.4.1, p.10 ('Health risk assessment was only calculated for polished rice, and average concentrations for As, Cd, Sn, Pb, and Hg were 0.09 +/- 0.01, 0.04 +/- 0.02, 0.01 +/- 0.01, 0.01 +/- 0.01, and 0.0038 +/- 0.0002 mg kg-1'); reference Table 1 row 'RICEa' (footnote a: Paddy and polished rice), p.5.Same source, analyte, statistic, basis and analytical method. Subgroups can share samples with the study total. A descriptive difference, not a significance test, treatment effect or safety judgment.Collection period
2019
No year-by-year sample register is reconstructed from this summary.
Geographic scope
Polished rice, Region of Arequipa
Rice variety or type within one study.
Sampling, analysis and reporting limits
Grinding to flour, microwave-assisted HNO3 digestion (CEM MARS6), HR-ICP-MS (Thermo ELEMENT2) for Cd114, Sn118, Pb208 (medium resolution) and As75 (high resolution, total As); total Hg by CVAAS (EPA SW 846 7471B).
no non-detects reported for this cell; source does not describe non-detect handling
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 | 0.01 +/- 0.01 mg kg-1 | mg/kg x 1000 |
Original SD: 0.01 mg kg-1.
Section 3.4.1, p.10 ('Health risk assessment was only calculated for polished rice, and average concentrations for As, Cd, Sn, Pb, and Hg were 0.09 +/- 0.01, 0.04 +/- 0.02, 0.01 +/- 0.01, 0.01 +/- 0.01, and 0.0038 +/- 0.0002 mg kg-1').
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.