摘要
固相微萃取(SPME)是一种广泛使用的样品前处理技术,它是集萃取、浓缩、解吸、进样于一体的样品前处理新技术,它以固相萃取(SPE)为基础,保留了SPE的全部优点,排除了需要柱填充物和使用有机溶剂进行解吸的缺点。SPME是以涂渍在石英玻璃纤维上的固定相(高分子涂层或吸附剂)作为吸收(吸附)介质,对目标分析物进行萃取和浓缩,并在气相色谱仪进样口中进行分析,这一技术适合于很多技术领域的样品处理和分析。对SPME的演变和进展做了简要讨论。
Solid-phase microextraction （SPME） is a sampling technique based on sorption of analytes onto a polymeric material coated on a silica fiber. SPME is a popular sample preparation method, which integrates extraction, concentration, desorption and injection into one step for sample preparation. SPME, which is based on solid-phase extraction （SPE）, eliminates the disadvantages of using packed materials and solvents to dissolve analytes and retains all advantages of SPE .The stationary phases of SPME are polymers （ such as polydimethylsiloxane） or adsorbents （such as carbon）,which are coated on silica fiber or capillary column. The SPME can extract and concentrate the sample by adsorbing （or absorbing） the analytes onto stationary phases, then deliver the fiber of SPME to the inlet port of gas chromatograph for analysis. This method is suitable for sample preparation in a variety of technical areas. This paper discusses briefly the evolution and recent advances in solid-phase microextraction techniques.
出处
《化学试剂》
CAS
CSCD
北大核心
2008年第1期13-22,共10页
Chemical Reagents
