水中低残留有机物萃取过程的盐析作用及色谱分析  

THE SALTING-OUT EFFECT ON EXTRACTING TRACE ORGANICSUBSTANCES IN WATER AND RELATEDCHROMATOGRAPHIC ANALYSIS

作　　者：张全争[1] 谢建荣[1] 

机构地区：[1]中国科学院福建物质结构研究所,福州350002

出　　处：《环境化学》2001年第3期286-290,共5页Environmental Chemistry

基　　金：福建省科委国际合作基金资助项目(98-1-9)

摘　　要：用自制的高浓缩比液液萃取装置,对氯化钠作为盐析剂在萃取过程中的作用进行色谱分析,三种非挥发性有机物六六六、ＤＤＴ和苯并(α)芘的最低检测限均可达到１ｎｇ·ｌ－１以下,用本方法检测自来水有ｎｇ．ｌ－１级六六六和 ＤＤＴ存在．Benzene hexachloride ( BHC), dicophane (DDT) and benzo (a) pyrene are three non volatile organic substances listed in the current Chinese National Standards for Water Quality. The salting-out effect of the sodium chloride in the sample pre-concentration procedure and their related chromatographic analysis by employing a simple, but high ration liquid-liquid extraction (LLE) device have been observed in this article. The limit of detection for all of the three target substances was found below 1ng·l -1. The results of the application of this proposed procedure to real tap water have been given, too. The possibility of BHC and DDT in several ng·l-1 level in the tested tap water exists.

关 键 词：有机物 高浓缩比液液萃取 盐析作用 色谱 水质监测 农药残留 

分 类 号：X832[环境科学与工程—环境工程] X592