Stir bar sorptive extraction and trace analysis of alkylphenols in water samples by thermal desorption with in tube silylation and gas chromatography–mass spectrometry
- 作者：Kawaguchi ; Migaku ; Sakui ; Norihiro ; Okanouchi ; Noriya ; Ito ; Rie ; Saito ; Koichi ; Nakazawa ; Hiroyuki
- 关键词：Alkylphenol ; Water sample ; Stir bar sorptive extraction (SBSE) ; Thermal desorption (TD) ; In tube derivatization
- 刊名：Journal of Chromatography A
- 出版年：2005
- 期刊代码：47_00219673
- 类别：ch
- 出版时间：January 7, 2005
- 卷：1062
- 期：1
- 页码：23-29
- 文件大小：178 K
摘要
A novel method called thermal desorption (TD) with in tube silylation followed by gas chromatography–mass spectrometry (GC–MS), which is used for the determination of trace amounts of alkylphenols (APs) in river water samples, is described. APs are extracted from river water samples and concentrated by the stir bar sorptive extraction (SBSE) technique. The stir bar coated with polydimethylsiloxane (PDMS) is added to 2.0ml water sample and stirring is carried out for 60min at room temperature (25°C) in the vial. Then, the PDMS stir bar is subjected to TD with in tube silylation followed by GC–MS. The detection limit is of the sub pgml−1 (ppt) level. The method shows good linearity and the correlation coefficients are higher than 0.99 for all analytes. The average recoveries of APs are higher than 90%(R.S.D.: 3.6–14.8%, n