Multiple exposure and effects assessment of heavy metals in the population near mining area in South China.
Multiple exposure and effects assessment of heavy metals in the population near mining area in South China.
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DOI：
10.1371/journal.pone.0094484
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
McBride MB
中科院分区：
文献类型：
--
作者：
Zhuang P;Lu H;Li Z;Zou B;McBride MB
本研究的目的是调查中国南方大宝山矿附近环境和种植和消费的几种重要食物来源中镉、铅、铜和锌的水平，并评估当地居民的潜在健康风险。矿区附近耕地土壤和井水中Cd、Pb、Cu、Zn含量超标。部分粮食作物（稻谷、蔬菜和大豆）样品中Cd和Pb的含量明显高于最高允许水平。半数鸡肉和鱼肉样品中Cd和Pb含量超过国家标准。大宝山矿区居民头发中Cd、Pb含量高于非矿区居民。大米的摄入量被确定为居民估计每日摄入这些金属的主要来源。成人和儿童的危害指数值分别为10.25和11.11，估计大部分风险来自摄入自家种植的大米和蔬菜。本研究强调了多途径在中国重金属暴露健康风险评价研究中的重要性。
The objective of this study was to investigate the levels of Cd, Pb, Cu and Zn in the environment and several important food sources grown and consumed in the vicinity of Dabaoshan mine in Southern China, and evaluate potential health risks among local residents. The Cd, Pb, Cu and Zn concentrations of arable soils and well water near the mines exceeded the quality standard values. The concentrations of Cd and Pb in some food crops (rice grain, vegetable and soybean) samples were significantly higher than the maximum permissible level. The Cd and Pb concentrations in half of the chicken and fish meat samples were higher than the national standard. The residents living near Dabaoshan mine had higher Cd and Pb levels in hair than those of a non-exposed population. The intake of rice was identified as a major contributor to the estimated daily intake of these metals by the residents. The hazard index values for adults and children were 10.25 and 11.11, respectively, with most of the estimated risks coming from the intake of home-grown rice and vegetables. This study highlights the importance of multiple pathways in studying health risk assessment of heavy metal exposure in China.
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