Health risk assessment for consumption of fish originating from ponds near Dabaoshan mine, South China

大宝山矿周边鱼类重金属污染及其健康风险评价

作者: Zhuang, P (Zhuang, Ping); Li, ZA (Li, Zhi-an) ; McBride, MB (McBride, Murray B.) ; Zou, B (Zou, Bi) ; Wang, G (Wang, Gang) 

来源出版物: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH  卷: 20   期: 8   页: 5844-5854   DOI: 10.1007/s11356-013-1606-0   出版年: AUG 2013 

摘要: Mining effluents are a potential source of toxic metals in the surrounding aquatic ecosystem and pose a potential health risk to humans from fish consumption. The objective of this paper is to assess the impact of the long-term Dabaoshan mining operation on heavy metal accumulation in different fish species. Heavy metal accumulation (lead (Pb), cadmium (Cd), zinc (Zn), and copper (Cu)) in four tissues (liver, muscle, intestine, and gills) of five carp species (Hypophthalmichthys molitrix, Ctenopharyngodon idellus, Megalobrama amblycephala, Aristichthys nobilis, and Carassius auratus auratus) from two fishponds exposed to effluent waters from Dabaoshan mine, South China. The bioaccumulation factor (BAF) and target hazard quotients were calculated to assess potential health risks to local residents through fish consumption. Levels of heavy metals varied depending on the analyzed tissues. C. auratus auratus accumulated the higher Pb, Cd, Zn, and Cu in the intestine compared with other fish species. Liver of all five species contained high concentrations of Pb, Cd, Zn, and Cu. The BAF for the studied metals showed a descending order of Cd > Zn > Cu > Pb for fishpond 1 and Zn > Cd > Cu > Pb for fishpond 2. Risk assessments suggested that potential human health risk may be present due to high Pb and Cd concentration in the muscle of some fish species exceeding the national and international limits, although the target hazard quotients were less than one. 

关键词: Fish; Heavy metals; Bioaccumulation; Health risk; Mining 

KeyWords: HEAVY-METALS; POLLUTION GRADIENT; TRACE-METALS; ENVIRONMENTAL IMPACTS; RIVER BASIN; TAIHU LAKE; HUMAN DIET; BIOACCUMULATION; ACCUMULATION; SEDIMENT 

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