Organochlorine pesticides (OCPs) are a typical kind of endocrine disrupting chemicals, with genotoxicity and endocrine toxicity effects, which is a great threat to human health. This paper studies the concentration and the sources of OCPs in surface water, sediments and aquatic organisms in Baiyangdian Lake during the 1950s and in 2017. It is shown that the concentration of OCPs in the Baiyangdian area is between 10.80 and 261.90 ng/L, and the corresponding concentration in sediments is from 73.95 to 269.80 ng/g. HCHs and DDTs are widely detected, while other OCPs are quite few. The pollution of OCPs in Baiyangdian area does not see the characteristics of the nonpoint source pollution, and the pollution is closely related to the external input of the river (the Fuhe river). Moreover, the frequent ecological water supplement, the development of the agricultural planting structure and the fragile ecological environment also affect the OCPs pollution.

Baiyangdian Lake  /  OCPs  /  external input  /  ecological water supplement  /  ecological environment