Rice finding 1024

Source evidence and comparison details for the Rice profile.

Lockwood et al. 2023

Unpolished white rice · Cadmium (Cd) · Sample count unreported.

Selected finding and reference

42 µg/kg (mean)Mean.

Sample count unreported. Basis: unspecified.

all samples above LOD per authors

HMI baseline position

Limited data: Held: cannot be reproduced from Table 2 (unpolished white Cd rows 45 and 25 average 35; all four white rows average about 50.8). Missing evidence never means low contamination.

Held: cannot be reproduced from Table 2 (unpolished white Cd rows 45 and 25 average 35; all four white rows average about 50.8).

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

unpolished white varieties

Rice variety or type within one study.

Sampling, analysis and reporting limits

10-20 grains ground, HNO3/HCl overnight digest, solution ICP-MS (Agilent 7700s) with Rh internal standard, 8-point calibration 0.6-600 µg/kg; LA-ICP-MS imaging (unquantified).

all samples above LOD per authors

Held: cannot be reproduced from Table 2 (unpolished white Cd rows 45 and 25 average 35; all four white rows average about 50.8).

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 statisticOriginal resultDisplayed unit conversion
meanUnpolished red varietals had higher mean Pb (22 versus 6.8 μg kg−1) and lower Cd (12 versus 42 μg kg−1) concentrations than white ricenone

Results and Discussion, Nephrotoxic Metals paragraph; p.2895.

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.

Open the primary publication · HMI source record