[Distribution characteristics of organochlorine pesticides in river surface sediments in Song-Liao watershed].

摘要: With gas chromatography-electron capture detector (GC-ECD), this paper analyzed 13 kinds of organochlorinae pesticides (OCP) in surface sediments collected from 22 sites Song-Liao water system. The results showed that the total concentration OCP varied 3.06 to 23.24 ng x g(-1) Daliao River system and 4.26 18.45 Songhuajiang most dominant pollutant Watershed was HCH, but there existed different pollution tendency two subsystems. In River, were also relatively high concentrations DDT. High gamma-HCH observed among isomers HCH whole watershed, which exceeded initial affecting could potentially do toxic effect on creatures.