Rice finding 146
Source evidence and comparison details for the Rice profile.
Rice grain ('fruit', edible part; roots, stems, leaves and shells excluded) · Total arsenic (tAs) · 16 individual rice plants at distinct sampling locations (33 sampling points across all crops).
Selected finding and reference
16 individual rice plants at distinct sampling locations (33 sampling points across all crops). Basis: dry weight.
No non-detects reported; LOD not reported
HMI baseline position
Limited data: Held: SD 0.0132 mg/kg (CV 4.5%) across 16 independent field samples from a mining area is implausibly narrow; may be analytical SD. Table 2 is internally inconsistent: the sweet potato (root) and maize (fruit) blocks print identical concentrations for Cd 0.0561, Zn 10.9869, Cr 0.7916, Cu 6.0248, Ni 1.0342, Pb 0.9186, Sb 0.0358 and As 0.2514 mg/kg (apparent copy error), and several rice Pi values do not equal concentration/ Missing evidence never means low contamination.
Held: SD 0.0132 mg/kg (CV 4.5%) across 16 independent field samples from a mining area is implausibly narrow; may be analytical SD. Table 2 is internally inconsistent: the sweet potato (root) and maize (fruit) blocks print identical concentrations for Cd 0.0561, Zn 10.9869, Cr 0.7916, Cu 6.0248, Ni 1.0342, Pb 0.9186, Sb 0.0358 and As 0.2514 mg/kg (apparent copy error), and several rice Pi values do not equal concentration/
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
2020
No year-by-year sample register is reconstructed from this summary.
Geographic scope
Xiushan County manganese
Sampling site within one study.
Sampling, analysis and reporting limits
HNO3-H2O2 heating digestion; ICP-MS (Agilent 7900); oven-dried 70 °C, 100 mesh.
No non-detects reported; LOD not reported
Held: SD 0.0132 mg/kg (CV 4.5%) across 16 independent field samples from a mining area is implausibly narrow; may be analytical SD. Table 2 is internally inconsistent: the sweet potato (root) and maize (fruit) blocks print identical concentrations for Cd 0.0561, Zn 10.9869, Cr 0.7916, Cu 6.0248, Ni 1.0342, Pb 0.9186, Sb 0.0358 and As 0.2514 mg/kg (apparent copy error), and several rice Pi values do not equal concentration/
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 | 0.2944 ± 0.0132 | mg/kg x 1000 |
Original SD: 0.0132 mg/kg dry weight.
Table 2, Rice (fruit) rows; p. (article in press) Table 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.