摘要
运用顶空固相微萃取与色谱联用方法(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.
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.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1999年第7期768-772,共5页
Chinese Journal of Analytical Chemistry
关键词
固相微萃取
气相色谱
有机氯
水分析
水质监测
Gas Chromatography, solid phase microextraction, solid phase extraction, organochlorine compounds
