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Trace elements in fish from Taihu Lake, China: Levels, associated risks, and trophic transfer
被引:82
作者:
Hao, Ying
[2
]
Chen, Liang
[1
]
Zhang, Xiaolan
[1
]
Zhang, Dongping
[1
]
Zhang, Xinyu
[1
]
Yu, Yingxin
[1
]
Fu, Jiamo
[1
,3
]
机构:
[1] Shanghai Univ, Sch Environm & Chem Engn, Inst Environm Pollut & Hlth, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Sch Environm & Chem Engn, Dept Environm Sci & Engn, Shanghai 200444, Peoples R China
[3] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China
关键词:
Biomagnification;
Fish;
Taihu Lake;
Trace element;
Trophic transfer;
HUMAN HEALTH-RISK;
HEAVY-METALS;
FOOD-WEB;
STABLE-ISOTOPES;
MARINE FISH;
BIOACCUMULATION;
CADMIUM;
ORGANISMS;
MERCURY;
LEAD;
D O I:
10.1016/j.ecoenv.2012.12.012
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
Concentrations of eight trace elements [iron (Fe), manganese (Mn), zinc (Zn), chromium (Cr), mercury (Hg), cadmium (Cd), lead (Pb), and arsenic (As)] were measured in a total of 198 samples covering 24 fish species collected from Taihu Lake, China, in September 2009. The trace elements were detected in all samples, and the total mean concentrations ranged from 18.2 to 215.8 mu g/g dw (dry weight). The concentrations of the trace elements followed the sequence of Zn > Fe > Mn > Cr > As > Hg > Pb > Cd. The measured trace element concentrations in fish from Taihu Lake were similar to or lower than the reported values in fish around the world. The metal pollution index was used to compare the total trace element accumulation levels among various species. Toxabramis swinhonis (1.606) accumulated the highest level of the total trace elements, and Saurogobio dabryi (0.315) contained the lowest. The concentrations of human non-essential trace elements (Hg, Cd, Pb, and As) were lower than the allowable maximum levels in fish in China and the European Union. The relationships between the trace element concentrations and the delta N-15 values of fish species were used to investigate the trophic transfer potential of the trace elements. Of the trace elements, Hg might be biomagnified through the food chain in Taihu Lake if the significant level of p-value was set at 0.1. No biomagnification and biodilution were observed for other trace elements. (C) 2012 Elsevier Inc. All rights reserved.
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页码:89 / 97
页数:9
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