Bioaccumulation of trace metals in farmed fish from South China and potential risk assessment.
Concentrations of trace metals were determined in water, sediment, fish feed and two species of farmed fish, pompano and snapper, collected from Daya Bay and Hailing Bay of South China in July 2007 and January 2008. Total average concentrations of Cu, Pb, Zn, Cd, Cr, Hg and As were 1.6, 2.7, 27.3, 0.025, 0.62, 0.18 and 0.59 μg/g dry wt in pompano and 1.5, 2.6, 23.6, 0.020, 0.55, 0.22 and 0.53 μg/g dry wt in snapper. In general, the concentrations of all target metals except Hg were positively correlated with lipid contents whereas negative correlations were observed between the metal concentrations and fish body weights. Model calculation indicated that dietary uptake of Zn and Cd predominate their accumulation in snapper, accounting for 99.9% and 98.2% of the total inputs. Risk assessments suggested that potential ecological and human health risk may be present due to elevated Pb concentrations in sediment and farmed fish.
Qiu
Yao-Wen
YW
Key Laboratory of Tropic Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
Lin
Duan
D
Liu
Jing-Qin
JQ
Zeng
Eddy Y
EY
D000818:Animals; D017756:Aquaculture; D002681:China; D004784:Environmental Monitoring; D005399:Fishes / Q000145:classification / Q000378:metabolism*; D006801:Humans; D008670:Metals / Q000378:metabolism*; D018570:Risk Assessment; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
D008670:Metals; D014874:Water Pollutants, Chemical