黄河中下游水体中有机氯农药含量与分布

Content and Distribution of Organic Chlorine Pesticide in the Middle and Lower Yellow River

为了解黄河中下游水体中有机氯农药的含量、分布规律及其来源，采用电子捕获检测器检测了黄河中下游干支流26个水样。结果表明：水相OCPs的总含量为2．66～109．55ng／L，其中HCB、DDTs与HCHs的含量较高，分别为0．25～56．83ng／L、0．06～10．84ng／L和0．73—48．09ng／L；支流污染较干流严重。悬浮相OCPs的含量为6．30-698．05ng／g，主要组分DDTs和HCHs的含量分别为2．39-469．28ng／g和1．30～187．12ng／g。工业废水和受污染严重支流的汇入、农药的长期使用是黄河中下游有机氯农药污染的主要原因。

It tests 26 water samples taken from the middle and lower Yellow River and its tributaries by using electronic detector for understanding the content,distribution law and source of organic chlorine pesticide in the water of the middle and lower Yellow River.The outcomes show that the total content of water facies OCPs is 2.66-109.55 ng/L,of which,the content of HCB,DDTs and HCHs is higher,0.25-56.83 ng/L,0.06-10.84 ng/L and 0.73-48.09 ng/L respectively and;the pollution of tributary is more serious than that of the main river.The content of suspended phase OCPs is 6.30-698.05 ng/g and the content of main DDTs HCHs is 2.39-469.28 ng/g and 1.30-187.12 ng/g respectively.The afflux of waste water of industry and seriously polluted tributaries and long-term use of pesticides are the main reason of organic chlorine pesticide pollution of the middle and lower Yellow River.