Copper and zinc, but not other priority toxic metals, pose risks to native aquatic species in a large urban lake in Eastern China

被引:97
作者
Fu, Zhiyou [1 ]
Wu, Fengchang [1 ]
Chen, Lulu [1 ]
Xu, Bingbing [1 ]
Feng, Chenglian [1 ]
Bai, Yingchen [1 ]
Liao, Haiqing [1 ]
Sun, Siyang [1 ,2 ]
Giesy, John P. [1 ,3 ,4 ]
Guo, Wenjing [1 ,5 ]
机构
[1] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
[2] Nanchang Univ, Dept Environm & Chem Engn, 999 Xuefu Ave, Nanchang 330031, Peoples R China
[3] Univ Saskatchewan, Dept Vet Biomed Sci, Saskatoon, SK 57N 5B3, Canada
[4] Univ Saskatchewan, Toxicol Ctr, Saskatoon, SK 57N 5B3, Canada
[5] Beijing Normal Univ, Coll Water Sci, Beijing 100012, Peoples R China
基金
中国国家自然科学基金;
关键词
Metal; Water; Aquatic species; Ecological risk; Joint probability method; Tai Lake; TAIHU LAKE; HEAVY-METALS; WATER; CONTAMINATION; ORGANISMS; SEDIMENTS; CHEMISTRY; TRENDS; BAY;
D O I
10.1016/j.envpol.2016.09.007
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Over the past 20 years, global production of copper (Cu) and zinc (Zn) rank in the top three compared to other metals such as Pb, Cd, Cr, Ni, As and Hg. However, due to the potential for exposure and toxicity to humans, more attention of environmental pollution was paid to other metals such as Cd and Hg. Aquatic organisms are sensitive to Cu and Zn. Even though internal concentrations of these required elements are homeostatically controlled, toxic effects can occur at the fish gill surface. In this work, concentrations in surface waters and toxic effects of Cu, Zn, Ni, Cr, Pb, Cd, As, Hg were determined and risk of various metals in Tai Lake, China were evaluated using both risk quotients and joint probability distributions. Two transition metals, Cu and Zn posed the greatest risks to aquatic organisms while measured concentrations of other metals were less than thresholds for adverse effects. Approximately 99.9% and 50.7% of the aquatic organisms were predicted to be affected by Cu and Zn in surface water of Tai Lake respectively. Our results highlight ecological risks of Cu and Zn in water of a typical, large, urban lake in Eastern China, which was ignored in the past. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1069 / 1076
页数:8
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