固相微萃取与色谱联用方法分析水中12种有机氯化合物

运用顶空固相微萃取与色谱闻用方法（ＨＳ－ＳＰＭＥ－ＧＣ）对水中的残留有机氯化合物进行了分析。对影响ＨＳ－ＳＰＭＥ－ＧＣ分析灵敏度的各种实验因素如涂层种类，萃取温度、平衡时间，离子浓度等进行了讨论并将该方法与固相萃取法（ＳＰＥ），液液萃取法（ＬＬＥ）作了对比，同时考察了常见环境共存污染物直链烷基苯磺酸钠（ＬＡＳ）对几种方法的影响。

Analysis of Organchlorine Compounds in Water by Solid Phase Microextraction and Gas Chromatography

In this work, both solid phase microextraction (SPME) and solid phase extraction(SPE) were used to enrich organochlorine compounds in water samples and analyzed by gas chromatography with electron capture detector. The operating conditions of SPME have been studied and different kinds of solid phase were compared. Linear alkybenzene sulfonate ( LAS) was added to the samples to investigate its effect on the analysis. The results indicated that polyacrylate was better than other commercial solid phases in extraction of moderated polar organic compounds and the sensitivity of SPME was higher than SPE. LAS affect much in liquid-liquid extraction and headspace SPME, but it has little effect on SPE and direct-SPME method. The applications showed that SPME was a fast and effective method in sample preparation.