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Kumar et al. 2022 - Lead in Bangladeshi agricultural foods

Kumar et al. compiled published lead concentration data for agricultural foods commonly consumed in Bangladesh and assessed non-cancer and cancer risk. The source is a summary-rich literature survey, not a new sampling campaign, but it reports routeable food concentration values by commodity group, district, and food item. It is useful for Bangladesh geographic context and for source-pool sensitivity review, not for silent pooling into US-market benchmark rows.

Key numbers

The paper standardizes Pb concentration values to ug/g fresh weight unless otherwise noted.

Commodity-group means and prominent food-item values:

Food group or itemPb concentrationUnitNote
Wheat3.24ug/g fresh weightText also states wheat was highest among cereals; abstract states 4.04 ug/g.
Rice2.22ug/g fresh weightApproximately 11 times the 0.20 ug/g cereal MAC used by the authors.
Maize1.43ug/g fresh weightApproximately 7 times the 0.20 ug/g cereal MAC used by the authors.
Grass pea1.08ug/g fresh weightHighest pulse value.
Chickpea0.90ug/g fresh weightPulse value.
Black gram0.70ug/g fresh weightPulse value.
Lentil0.53ug/g fresh weightPulse value.
Mung bean0.51ug/g fresh weightLowest pulse value.
Mango0.61ug/g fresh weightHighest fruit average; six times the 0.10 ug/g MAC used by the authors.
Apple and pineapple0.09ug/g fresh weightBelow the 0.10 ug/g fruit/vegetable MAC used by the authors.
Mushroom0.07ug/g fresh weightListed among vegetable items below the authors’ 0.10 ug/g MAC.
Cabbage4.64ug/g fresh weightHighest vegetable item average in the text.
Zucchini3.36ug/g fresh weightElevated vegetable item.
Sponge gourd3.28ug/g fresh weightElevated vegetable item.
Tesla gourd2.19ug/g fresh weightElevated vegetable item.
Chili1.75ug/g fresh weightElevated vegetable item.
Okra1.66ug/g fresh weightElevated vegetable item.
Turmericaverage 80; range <LOD-483ug/gMiscellaneous food-product section; source notes adulteration/exposure concern.

District-level signals reported by the source:

ScopeReported range or high valueUnitNote
Rice by district0.08-9.64ug/g fresh weightDhaka lowest; Chapai Nawabganj highest.
Wheat by district<0.01-7.78ug/g fresh weightMymensingh/Chittagong lowest; Jhenaidah-Kushtia highest.
Maize by district0.04-6.35ug/g fresh weightBogra lowest; Jhenaidah-Kushtia highest.
Cumulative cereal average, Chapai Nawabganj8.07ug/g fresh weightHighest district cereal average.
Vegetables, Tangail district2.17ug/g fresh weightHighest district vegetable average; sponge gourd 6.38 and chili 5.91 ug/g.

The authors report that rice, zucchini, tesla gourd, sponge gourd, okra, drumstick lib, chili, and cabbage may pose non-cancer health risks with THQ values above 1, while fruits and pulses did not pose non-cancer health risks in their assessment.

Methods (brief)

The authors conducted a literature survey using combinations of Pb/lead, Bangladesh, and food-category terms for cereals, vegetables, fruits, and pulses. Included papers had to report Pb concentrations in text or tabular format for agricultural products in Bangladesh. Values reported on dry-weight or other bases were standardized by the authors to fresh weight using moisture-content assumptions, and health risks were estimated using Bangladesh food-ingestion rates and US EPA methods.

Implications

This source provides broad Bangladesh-market lead context across cereals, pulses, fruits, vegetables, mushrooms, and turmeric. It is summary-only but not context-only: the reported means, ranges, and district summaries can contribute to evidence pools where literature-survey summary statistics are admitted with the source’s conversion assumptions preserved. It should be excluded from primary US-market product standards unless governance explicitly admits Bangladesh-market sensitivity evidence.

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Verification notes

Evidence Fitness: routeable for Bangladesh agricultural-food lead occurrence and geographic context, with source-reported fresh-weight summary values and the authors’ cross-source conversions. Not routeable as sample-level primary data from a single laboratory campaign; not a US-market benchmark pool source without explicit governance rationale. The PDF first page provides title, authors, journal, year, and DOI. The open-access statement identifies CC BY 4.0. The PDF SHA-256 at ingest was 501e513e2d32e8d572ee7ee00a85bf9c0483b10a8286af79f3f182a3c8e9c5cd.

Page history

The five most recent substantive edits to this page. The full version history lives in git; when DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.

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c1aef382026-06-02audit-queue: hamid2021-bacterial-plant-biostimulants-review audited-promote