摘要
利用气相色谱-电子捕获检测器（gas chromatography-electron capture detector,GC-ECD）对松辽流域重点污染河流22个表层沉积物样品的13种有机氯农药进行了分析.结果表明,大辽河流域有机氯农药含量为3.06-23.24ng·g^-1,松花江流域为4.26-18.45ng·g^-1.松辽流域沉积物中主要有机氯农药为六六六（HCH）,松花江流域和大辽河流域表现出了不同的污染趋势.松花江沉积物中也有较高的滴滴涕（DDT）残留量.整个松辽流域都有较高含量的丙体六六六（γ-HCH）,超过了其初始效应浓度,可能对该地区水生生物产生毒性效应.
With gas chromatography-electron capture detector （ GC-ECD）, this paper analyzed 13 kinds of organochlorinae pesticides （OCP） in surface sediments collected from 22 sites of Song-Liao water system. The results showed that the total concentration of OCP varied from 3.06 to 23.24 ng·g^-1 in Daliao River system and from 4. 26 to 18.45 ng ·g^-1 in Songhuajiang River system. The most dominant OCP pollutant in the sediments in Song-Liao Watershed was HCH, but there existed different pollution tendency in the two subsystems. In Songhuajiang River, there were also relatively high concentrations of DDT. High concentration γ-HCH was observed among the isomers of HCH in the whole watershed, which exceeded the initial affecting concentration and could potentially do toxic effect on the water creatures.
出处
《应用生态学报》
CAS
CSCD
北大核心
2007年第7期1523-1527,共5页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展规划资助项目(2004CB418502).
关键词
分布特征
有机氯农药
表层沉积物
松辽流域
distribution characteristics
organochlorinae pesticides （OCP）
surface sediments
Song-Liao Watershed.
