Ministry of Agriculture-Laboratory of Quality and Safety Risk Assessment for Dairy Products (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
College of Animal Science and Technology, China Agriculture University, Beijing, 100193, China.
Biol Trace Elem Res. 2021 Sep;199(9):3303-3311. doi: 10.1007/s12011-020-02470-8. Epub 2020 Nov 12.
The objective of this study was to assess the contamination levels of arsenic (As), lead (Pb), chromium (Cr), and cadmium (Cd) in raw milk and the subsequent potential health risk to local consumers close to leather-processing plants in China. The As and Pb concentrations in milk from contaminated areas were 0.43 ± 0.21 and 2.86 ± 0.96 μg/L, respectively, which were significantly higher than in milk from unpolluted farm, with values of 0.20 ± 0.05 and 2.32 ± 0.78 μg/L, respectively. The Cr and Cd levels in milk from contaminated areas were 1.21 ± 1.57 and 0.15 ± 0.04 μg/L, respectively, which were slightly higher than in milk from unpolluted farm, with values of 0.87 ± 0.61 and 0.13 ± 0.04 μg/L, respectively, (P > 0.05). Target hazard quotient (THQ) and hazard index (HI) values for As, Pb, Cr, and Cd from milk consumption were calculated for individuals aged 3 to 69. The THQ followed a descending order of As > Pb > Cr > Cd, with values of 0.0066-0.0441, 0.0033-0.0220, 0.0019-0.0124, and 0.0007-0.0046, respectively. The HI values (0.0124-0.0832) were far below the threshold of 1.
本研究旨在评估中国皮革加工厂附近地区原料奶中砷（As）、铅（Pb）、铬（Cr）和镉（Cd）的污染水平及其对当地消费者的潜在健康风险。受污染地区牛奶中的 As 和 Pb 浓度分别为 0.43 ± 0.21 和 2.86 ± 0.96 μg/L，明显高于未受污染农场牛奶中的浓度，分别为 0.20 ± 0.05 和 2.32 ± 0.78 μg/L。受污染地区牛奶中的 Cr 和 Cd 浓度分别为 1.21 ± 1.57 和 0.15 ± 0.04 μg/L，略高于未受污染农场牛奶中的浓度，分别为 0.87 ± 0.61 和 0.13 ± 0.04 μg/L（P > 0.05）。对 3 至 69 岁个体从牛奶消费中摄入 As、Pb、Cr 和 Cd 的目标危害系数（THQ）和危害指数（HI）值进行了计算。THQ 按 As > Pb > Cr > Cd 的顺序递减，其值分别为 0.0066-0.0441、0.0033-0.0220、0.0019-0.0124 和 0.0007-0.0046。HI 值（0.0124-0.0832）远低于 1 的阈值。
