湘江长沙段饮用水水源保护区持久性有机污染物调查及防治对策

采用Waters-C18固相萃取柱预处理水样,建立了7种痕量持久性有机污染物的固相萃取-气相色谱-电子捕获(SPE-GC-ECD)分析测试方法。方法的回收率均在82.0%~105.4%的范围内,相对标准偏差(RSD)小于5.5%。采用该方法对湘江长沙段饮用水水源保护区5个监测断面的水样进行分析和调查。研究发现,除饮用水水源保护区下游断面六氯苯和o’,p’-DDT未检出外;其它断面所测的POPs均有检出,且浓度在0.27~2.27 ng/L范围内。针对POPs的污染现状,提出了相应的防治对策。

Investigations and Control Measures on Seven Persistent Organic Pollutants in Protected Region of Drinking Water Source of Xiangjiang in Changsha

A method based on solid phase extraction coupled with gas chromatography-electron capture detector(SPE-GC-ECD) has been developed for the determination of seven persistent organic pollutants using Waters-C_(18) solid phase extraction column for pretreating water samples.The recoveries of this method ranged form 82.0%~105.4%,and the relative standard deviations(RSD)<8% were observed.Water samples from five sampling sites in protected region of drinking water source of Xiangjiang in Changsha were analyzed.At ...