Heavy metal concentrations and associated health risks in edible tissues of marine nekton from the outer Pearl River Estuary, South China Sea

文献类型： 外文期刊

第一作者： Yang, Chang-Ping

作者： Yang, Chang-Ping;Liu, Yan;Shan, Bin-Bin;Yu, Wei;Sun, Dian-Rong;Yang, Chang-Ping;Liu, Yan;Shan, Bin-Bin;Sun, Dian-Rong;Liu, Yan;Shan, Bin-Bin;Yu, Wei;Sun, Dian-Rong;Xu, Jing;Yu, Wei;Zhang, Zai-Wang

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关键词： Heavy metal; Human health risk; Demersal nekton; Outer Pearl River Estuary

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

ISSN： 0944-1344

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页码：

收录情况： SCI

摘要： Seven heavy metals including Hg, Cu, Pb, Cd, Zn, Cr, and As were examined in seventeen marine nekton species from the outer Pearl River Estuary (PRE), South China Sea. On the wet weight basis, the metal concentration ranges were 0.016-0.157 mu g/g for Hg, 0.18-14.3 mu g/g for Cu, 0.26-1.48 mu g/g for Pb, 0.021-0.873 mu g/g for Cd, 1.35-57.15 mu g/g for Zn, 0.15-0.53 mu g/g for Cr, and 0.42-7.83 mu g/g for As, respectively. The levels of tested metals except for Pb in crustaceans were found to be higher than those in fish and cephalopods, suggesting that the diet and habitat played important roles on heavy metal accumulation ability of marine organism. Except for Cd inChampsodon capensis,Calappa lophos, andPortunus argentatus, all the left metal concentrations of investigated nekton species were below their permissible upper limits, indicating that consumption of examined marine nekton should be considered as safe for human health. The values of single target hazard quotient (THQ) and total THQ were all less than 1 and also suggested that there was no health risk for consumption. Even so, the local people should control their daily intake of crustacean foods from the outer PRE, since there might be potential As and Cd cumulative risks.

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