Overview
This study measured arsenic, cadmium, mercury, and lead in domestic and imported poultry meat sampled in Kazakhstan using ICP-MS.
Key numbers
Source units are ug/kg unless otherwise noted.
- Regulatory comparison values cited by the authors: tAs 0.1 mg/kg, Cd 0.05 mg/kg, Hg 0.03 mg/kg, Pb 0.5 mg/kg.
- Sampling design: 41 total broiler chicken samples (25 domestic across 9 Kazakhstani enterprises, 16 imported from USA, Russian Federation, Belarus, and Ukraine), studied in 2023.
- Arsenic averages per producer group ranged from 0.26 ug/kg to 20.7 ug/kg across the 10 sample groups; average tAs was 5.28 ug/kg domestic and 5.59 ug/kg imported.
- Cadmium ranged from 0.06 ug/kg in the lowest domestic producer sample to 2.45 ug/kg in the highest domestic producer sample; average Cd was 0.65 ug/kg in domestic poultry and 0.51 ug/kg in imported poultry.
- Mercury was detected in Astana market samples at 3.48 ug/kg, the highest domestic producer sample at 20.0 ug/kg, and imported products at 1.88 ug/kg; average Hg was 2.62 ug/kg domestic and 1.88 ug/kg imported.
- Lead ranged from 0.13 ug/kg in the lowest domestic producer sample to 123.8 ug/kg in the highest domestic producer sample; average Pb was 21.51 ug/kg domestic and 12 ug/kg imported.
- Student’s t-test (df=23, p=0.05, critical t=2.069) gave calculated values of 0.10 (As), 0.38 (Cd), 0.26 (Hg), and 0.52 (Pb); domestic vs. imported differences were statistically insignificant for all four metals.
Methods
Sample preparation used microwave decomposition under pressure on a Multiwave GO Plus system (Anton Paar GmbH, Germany), following EN 13805-2012. Analysis was performed on an Agilent Technologies 7500 quadrupole ICP-MS (operating mass range 5–240 amu) per ST RK EN 15763-2017, with data processed in MassHunter. Calibration used Inorganic Ventures multi-element solution IV-ICPMS-71A (As, Pb, Cd) and single-element mercury standard MSHGN-10PPM (NIST-traceable, ISO 17034/17025) across 5, 10, 20, 50, and 100 µg/L points, with a deionized-water nitric-acid blank. Triplicate measurements provided standard-deviation error bars; Student’s t-test was used for independent populations. The NRCV food-analysis laboratory is GOST ISO IEC 17025-2019 accredited and participates in FAPAS interlaboratory proficiency testing.
Implications
The source supports Kazakhstan poultry occurrence context. All averages are below the paper’s stated Customs Union maximum permissible levels, but the highest domestic producer sample is a notable high-lead/high-mercury point within the dataset.
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Verification notes
- Source identity checked against DOI 10.51452/kazatuvc.2024.3(007).1753 and the downloaded PDF.
- Values are in ug/kg in the source text excerpt; regulatory thresholds are also shown as mg/kg in the paper.
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