Pollution characteristics and risk assessment of polycyclic aromatic hydrocarbons(PAHs)in fish of typical lakes in the middle and lower reaches of the Yangtze River
Pollution characteristics and risk assessment of polycyclic aromatic hydrocarbons(PAHs)in fish of typical lakes in the middle and lower reaches of the Yangtze River
In order to reveal the pollution characteristics and risk levels of polycyclic aromatic hydrocarbons(PAHs)in fish from four typical lakes(Poyang Lake,Dongting Lake,Dongjiang Lake and Liangzi Lake)in the middle and lower reaches of the Yangtze River,16 PAHs in 20 fishes were detected,the levels of PAHs contamination were analyzed,and the risk assessment was carried out.The results showed that 11 PAHs were detected,with the concentrations of 32.59-39.81 ng·g-1 in Poyang Lake,29.47-37.60 ng·g-1 in Dongting Lake,26.07-36.25 ng·g-1 in Dongjiang Lake and 27.78-47.95 ng g-1 in Liangzi Lake.The main detected substances were benzo[b]fluoranthene,benzo[k]fluoranthene,pyrene,chrysene and fluorene,of which benzo[b]fluoranthene had the highest detection rate and concentration.Acenaphthylene,acenaphthene,indeno[1,2,3-cd]pyrene,dibenzo[a,h]anthracene and benzo[g,h,i]perylene were not detected in all fish.The levels of PAHs pollution in fish in four lakes were relatively low compared to those at home and abroad.The health risk assessment results showed that the non-carcinogenic risk index of four lakes were all less than 1,which would not cause non-carcinogenic risks to human body.The carcinogenic risk index were all over 10-6,indicating that it might be carcinogenic risk to human body,to which more attention should be paid.
关键词
长江中下游典型湖泊/鱼体/多环芳烃(PAHs)/污染特征/风险评价
Key words
The middle and lower reaches of the Yangtze River/fish/polycyclic aromatic hydrocarbons(PAHs)/pollution levels/health risk
维普
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