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Speciation and risk of heavy metals in sediments and human health implications of heavy metals in edible nekton in Beibu Gulf, China: A case study of Qinzhou Bay

文献类型： 外文期刊

作者： Gu, Yang-Guang 1 ; Lin, Qin 1 ; Yu, Zi-Ling 1 ; Wang, Xu-Nuo 1 ; Ke, Chang-Liang 1 ; Ning, Jia-Jia 1 ;

作者机构： 1.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 570300, Guangdong, Peoples R China; Minist Agr, Key Lab South China Sea Fishery Resources Dev & U, Guangzhou 510300, Guangdong, Peoples R China; Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China

关键词： Metals;Chemical speciation;Sediment analysis;Ecological risk;Nekton;Human health risk

期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：5.553； 五年影响因子：5.907 ）

ISSN：

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收录情况： SCI

摘要： We investigated the total concentrations of heavy metals in surface sediments and nekton, along with sediment metal chemical partitioning in Qinzhou Bay of the Beibu Gulf. Cd was preferentially associated with the acid-soluble fraction and Pb mainly with the reducible fraction, whereas a major portion of Cr, Ni, Cu, and Zn was strongly associated with the residual fractions. A principal component analysis (PCA) in sediment metal speciation revealed three groupings (Cd; Pb; Cr, Ni, Cu, and Zn) that mainly resulted from different distributions of the metals in the various fractions. The Cr concentrations in nekton species were higher than maximum Cr concentrations permitted by the Chinese National Standard (GB 2762-2012). Taking as a whole, surface sediments of Qinzhou Bay had a 21% incidence calculation of adverse biological effects, based on the mean probable-effects-levels quotient. A human health risk assessment indicated no significant adverse health effects from consumption of nekton. (C) 2015 Elsevier Ltd. All rights reserved.

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