Biological Risk Assessment of Heavy Metals in Sediments and Health Risk Assessment in Marine Organisms from Daya Bay, China

文献类型： 外文期刊

第一作者： Kuang, Zexing

作者： Kuang, Zexing;Gu, Yangguang;Rao, Yiyong;Huang, Honghui;Kuang, Zexing;Gu, Yangguang;Rao, Yiyong;Huang, Honghui

作者机构：

关键词： heavy metals; ecological risk; human health risk; Monte Carlo; Daya Bay

期刊名称：JOURNAL OF MARINE SCIENCE AND ENGINEERING （ 影响因子：2.458； 五年影响因子：2.455 ）

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年卷期： 2021 年 9 卷 1 期

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收录情况： SCI

摘要： The concentrations of heavy metals in sediments and marine organisms in Daya Bay were investigated, and the Monte Carlo method was used to analyze the uncertainty of the results of geo-accumulation characteristics and ecological and health risks. The mean concentrations of metal elements in sediments were in the following order: Zn > Cr > Cu > As > Cd > Hg, while those in marine organisms were Zn > Cu > As > Cr approximate to Cd > Hg. The geo-accumulation index (I-geo) indicated that the primary pollutant was Hg, with 5.46% moderately polluted, and 39.52% for unpolluted to moderately polluted. Potential ecological risks (RI) were between low and high risks, and the contributions of Hg, Cd, and As to ecological risks were 50.85%, 33.92%, and 11.47%, respectively. The total hazard coefficients (THQ) were less than 1, but on the basis of total carcinogenic risks (TCR), the probability of children and adults exceeded the unacceptable risk threshold of 22.27% and 11.19%, respectively. Sensitivity analysis results showed that the concentrations of carcinogenic elements contributed to risk in the order of As > Cd > Cr. Therefore, in order to effectively control heavy metals contamination in Daya Bay, it is necessary to strengthen the management of Hg, Cd, and As emissions.

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