文献类型：期刊文献

英文题名：Metal concentrations and risk assessment in water, sediment and economic fish species with various habitat preferences and trophic guilds from Lake Caizi, Southeast China

作者：Jiang, Zhongguan[1];Xu, Nan[2];Liu, Bingxiang[1];Zhou, Lizhi[1];Wang, Juan[1];Wang, Chao[1];Dai, Bingguo[1];Xiong, Wen[3]

机构：[1]Anhui Univ, Sch Resources & Environm Engn, Hefei 230601, Anhui, Peoples R China;[2]Peking Univ, Shenzhen Grad Sch, Sch Environm & Energy, Shenzhen Key Lab Heavy Met Pollut Control & Reuti, Shenzhen 518055, Peoples R China;[3]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China

年份：2018

卷号：157

起止页码：1

外文期刊名：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

收录：SCI-EXPANDED(收录号：WOS:000431835400001)、、Scopus(收录号：2-s2.0-85044592961)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (No. 31600438), the Key Foundation of Anhui Province Education Department (KJ2016A025), the China Postdoctoral Science Foundation (2017M622020), and the Science and Technology Planning Project of Shenzhen, China (JCYJ20150629144818001). Thanks are given to Quanzhong Li, Yi Gao, and Xiaoli Wang, for their help during the analyses.

语种：英文

外文关键词：Heavy metals; Fish; Habitat preference; Trophic guild; Risk assessment; Lake Caizi

外文摘要：Despite the potential emissions of heavy metal pollution in Lake Caizi due to extensive agriculture, urban growth and fishing activities, the risk posed by metal concentrations to aquatic environments and human populations has not yet been studied. In this study we compared the concentrations of Hg, As, Pb, Cd, Cr, Cu and Zn in water, sediment, and economic fish species with different habitat preferences and trophic guilds across important fishery areas in Lake Caizi, located on the northern shore of the Yangtze River, Southeast China. The concentrations of Cr in water were found approximately 6 times higher than the safety thresholds established by international legislation. Cr, Zn, As and Cd concentrations in sediments surpassed the background values for Yangtze River basin in Anhui Province. However, all the studied fish species in Lake Caizi had metal concentrations lower than legislation thresholds established by China and international organizations. Heavy metal concentrations were found to be significantly higher in demersal (inhabiting near the sediments) and piscivorous (possessing higher trophic level) fishes than in pelagic/benthopelagic (inhabiting the upper and lower water column) and herbivorous/planktivorous (possessing lower trophic level) fishes. Our finding demonstrated that the metal concentrations in fishes are simultaneously influenced by the habitat and bio-accumulation through the food chain. According to target hazard quotient (THQ) calculations for heavy metal contents in the muscles of fish species, all the determined heavy metals gave THQ values lower than 1, suggesting the inexistence of health risks from the intake of fishes from Lake Caizi.