Risk Identification of Heavy Metals in Agricultural Soils from a Typically High Cd Geological Background Area in Upper Reaches of the Yangtze River

文献类型： 外文期刊

第一作者： Tian, Xiaosong

作者： Tian, Xiaosong;Tian, Xiaosong;Fan, Min;Gong, Yalong;Liu, Jinhu;Li, Guanghui;Chai, Guanqun;Qin, Song;Fan, Chengwu;Xie, Qing

作者机构：

关键词： Potential ecological risk; Health risk; Heavy metals; Priority pollutants; Agricultural soils

期刊名称：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.807； 五年影响因子：2.616 ）

ISSN： 0007-4861

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页码：

收录情况： SCI

摘要： This study adopted two risk assessment models to estimate the potential risk of heavy metals (HMs) in agricultural soils from a high Cd geological background area. Results were as follows: HMs posed an extremely high potential ecological risk (PER) (PER = 2051 > 1200) ascribed to Cd contribution. The overall non-carcinogenic risk (HI) of HMs for children (HI > 1) was unacceptable. Contributions of HMs to HI generally decreased in the order of Cr > As > Pb > Cd > Ni > Cu > Zn. The total carcinogenic risk (TCR) value for adults (2.1 x 10(-4)) and children (2.2 x 10(-4)) surpassed the reference value (1.0 x 10(-4)), indicating that the risks were unacceptable. Contributions of HMs to TCR generally decreased in the order of Cr approximate to Ni > Cd > As > Pb. These results suggested that risk control policies should not only consider the potential ecological risk of Cd but also take into consideration of the carcinogenic and non-carcinogenic risk of Cr and Ni in a typically high Cd geological background area.

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