湘江长沙段有机农药残留状况分析

Study on the contamination of organic pesticides in surface waters from the Xiangjiang River of Changsha

本文对湘江长沙段地表水有机氯、有机磷农药的残留状况进行了初步研究。结果表明，湘江长沙段地表水已受到有机氯农药的影响，其中主要检出物含量是六六六8．75×10^-4-5．84×10-3μg·L-1，七氯1．44×10-3-4．36×10-3μg·L-1,环氧七氯7．15×10-4-1．81×10-3μg·L-1,异狄氏剂醛1．40×10-3～1．74×10-3μg·L-1，检出率超过50％的有机农药有6种。湘江长沙段有机农药残留不容忽视。

This study researched contamination of organic pesticides in surface waters from the Xiangjiang River of Changsha.As a result, the contamination are ubiquitous,the Xiangjiang River of Changsha is congditioned by organic pesticides. The content of the major pollutants are benzene hexaehloride 8.75×10^-4-5.84×10-3μg·L-1, heptachlor 1.44×10-3-4.36×10-3μg·L-1, heptachlor epoxide 7.15×10-4-1.81×10-3μg·L-1, endrin aldehyde 1.40×10-3～1.74×10-3μg·L-1. The detection rate of six kinds organic pesticides go beyond 50%. The eontaminat of organic pesticides in surface waters from the Xiangjiang River of Changsha can not be ignored.