长江口以北沿海主要经济贝类中有机氯农药和多氯联苯的分布及评价

Distribution and Evaluation of the Organic Chlorine Pesticide and PCB in the Economic Shellfish from North of the Changjiang Mouth

本文调查研究了我国长江口以北沿海几种主要经济贝类体中有机氯农药及多氯联苯（ＰＣＢ）的残留量。结果表明，从鸭绿江口到长江口的各种经济贝类均已受到有机氯农药６６６、ＤＤＴ及ＰＣＢ的污染影响，以６６６的影响最为普遍，但其含量均远低于评价标准，食用价值尚未受到影响，生物质量尚好。河口地区的污染物含量较高。

The concentrations of the organic chlorine pesticide and PCB in the economic shellfish collected from North of the Changjiang mouth were determined.The results show that the economic shellfish were contaiminated by the organic chlorine and PCB. The contaimination of 666 1s very widespread,but the concentration of 666,DDT,and PCB in the economic shellfish are lower than the national standard level.The economic shellfish are the basically good level.The significant effect on the edible value has not been founed.