The Occurrence, Pathways, and Risk Assessment of Heavy Metals in Raw Milk from Industrial Areas in China

文献类型： 外文期刊

第一作者： Su, Chuanyou

作者： Su, Chuanyou;Gao, Yanan;Zhou, Xuewei;Yang, Xue;Huang, Shengnan;Han, Lei;Zheng, Nan;Wang, Jiaqi;Su, Chuanyou;Qu, Xueyin

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关键词： heavy metals; raw milk; industrial; risk assessment; China

期刊名称：TOXICS （ 影响因子：4.472； 五年影响因子：5.144 ）

ISSN：

年卷期： 2021 年 9 卷 12 期

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收录情况： SCI

摘要： This study evaluated chromium (Cr), arsenic (As), cadmium (Cd), and lead (Pb) contamination in raw milk from industrial areas in China, identified the possible pathways of heavy metals from the environment to raw milk, and made a risk assessment of the consumption of heavy metals from milk consumption. The Cr, As, Cd, and Pb concentrations in raw milk, water and silage were analyzed using inductively coupled plasma mass spectrometry. The Cr and As in soil were analyzed by flame atomic absorption spectrometry and atomic fluorescence spectrometry, respectively. Cd and Pb in soil were determined by a Graphite furnace atomic absorption spectrophotometer. The Cr and As concentrations in milk from industrial areas were 2.41 +/- 2.12 and 0.44 +/- 0.31 mu g/kg, respectively, which were significantly higher (p < 0.01) than those from non-industrial areas, which had levels of 1.10 +/- 0.15 and 0.25 +/- 0.09 mu g/kg, respectively. Chromium was mainly transferred through the soil-silage-milk pathway, As was transferred through the water-silage-milk pathway, while Cd was mainly transferred through the soil (water)-silage-milk pathway. The contributions of each metal to the overall hazard index (HI) followed a descending order of As, Cr, Pb, and Cd, with values of 46.64%, 25.54%, 24.30%, and 3.52%, respectively. Children were at higher risk than adults.

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