Rice finding 1762
Source evidence and comparison details for the Rice profile.
Packed retail rice grain (form not stated; cleaned, dried at 40 C, milled to powder) · Nickel (Ni) · Sample count unreported.
Selected finding and reference
Sample count unreported. Basis: dry weight (paper states mg kg-1 dry weight).
Ni was not detected in six rice samples; the paper does not state how non-detects entered the mean.
HMI baseline position
Limited data: Held: the rice Ni mean (0.004 mg/kg) is below the lowest quantified Ni value reported across all commodities (0.017 mg/kg, Kozaran peas), implying non-detects were entered as zero or a low substitute by the authors; treat the mean as censoring-dependent. Missing evidence never means low contamination.
Held: the rice Ni mean (0.004 mg/kg) is below the lowest quantified Ni value reported across all commodities (0.017 mg/kg, Kozaran peas), implying non-detects were entered as zero or a low substitute by the authors; treat the mean as censoring-dependent.
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
2014
No year-by-year sample register is reconstructed from this summary.
Geographic scope
all rice brands
All samples in the study.
Sampling, analysis and reporting limits
Dry ashing at 500 C, HNO3/H2O2 dissolution, ICP-OES (PerkinElmer 7300 DV).
Ni was not detected in six rice samples; the paper does not state how non-detects entered the mean.
Held: the rice Ni mean (0.004 mg/kg) is below the lowest quantified Ni value reported across all commodities (0.017 mg/kg, Kozaran peas), implying non-detects were entered as zero or a low substitute by the authors; treat the mean as censoring-dependent.
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 mean concentrations of Ni in different brands of rice, wheat, ... were 0.004, ... | mg/kg x 1000 |
Results, p. 4 (Ni paragraph); Table 3 rice Ni EWI 0.05.
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.