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松辽流域河流表层沉积物中有机氯农药的分布特征

王浩正;何孟常;林春野;全向春;郭伟   

  1. 北京师范大学环境学院水环境模拟国家重点实验室, 北京 100875
  • 收稿日期:2006-05-15 修回日期:1900-01-01 出版日期:2007-07-16 发布日期:2007-07-16

Distribution characteristics of organochlorine pesticides in river surface sedim ents in Song-Liao Watershed.

WANG Hao-zheng; HE Meng-chang; LIN Chun-ye; QUAN Xiang-chun; GUO Wei   

  1. State Key Laboratory of Water Environment Simulation, School of Environment,Beijing Normal University, Beijing 100875, China
  • Received:2006-05-15 Revised:1900-01-01 Online:2007-07-16 Published:2007-07-16

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3.06~23.24 ng·g-1,松花江流域为4.26~18.45 ng·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.

关键词: 土壤固化剂, 根系活力, 叶绿素, 根冠比, 生物量, 黑麦草

Abstract: 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.

Key words: soil stabilizer, root activity, chlorophyll, root/shoot ratio, biomass, ryegrass (Lolium perenne L.)