Temperature-controlled headspace liquid-phase microextraction device using volatile solvents

	Temperature-controlled headspace liquid-phase microextraction device using volatile solvents
	Chen, Shiheng 1,2; Peng, Hong 1; Wu, Dapeng 1; Guan, Yafeng 1
刊名	journal of chromatography a
	2010-09-17
卷号	1217 期号:38 页码:5883-5889
关键词	Temperature-controlled headspace liquid-phase microextraction (TC-HS-LPME) Headspace liquid-phase extraction Thermoelectric cooler (TEC) Chlorobenzenes Large volume injection
通讯作者	关亚风
产权排序	1;1
英文摘要	a novel temperature-controlled headspace liquid-phase microextraction (tc-hs-lpme) device was established in which volatile solvents could be used as extractant. in this device, a ptfe vial cap with a cylindrical cavity was used as the holder of the extraction solvent. up to 40 mu l of extraction solvent could be suspended in the cavity over the headspace of aqueous sample in the vial. a cooling system based on thermoelectric cooler (tec) was used to lower the temperature of extractant in ptfe vial cap to reduce the loss of volatile solvent during extraction process and increase the extraction efficiency. the selection of solvents for hs-lpme was then extended to volatile solvents, such as dichloromethane, ethyl acetate and acetone. the use of volatile extraction solvents instead of semi-volatile solvent reduced the interference of the large solvent peak to the analytes peaks, and enhanced the compatibility of hs-lpme with gas chromatograph (gc). moreover, the use of larger volume of extractant solvent increases the extraction capacity and the injection volume of gc after extraction, thus improving detection limits. several critical parameters of this technique were investigated by using chlorobenzenes (cbs) as the model analytes. high enrichment factors (498-915), low limits of detection (0.004-0.008 mu g/l) and precision (3.93-5.27%) were obtained by using tc-hs-lpme/gc-fid. relative recoveries for real samples were more than 83%. (c) 2010 elsevier bm. all rights reserved.
WOS标题词	science & technology ; life sciences & biomedicine ; physical sciences
类目[WOS]	biochemical research methods ; chemistry, analytical
研究领域[WOS]	biochemistry & molecular biology ; chemistry
关键词[WOS]	single-drop microextraction ; electron capture detection ; gas-chromatography ; water samples ; aqueous samples ; organochlorine pesticides ; nitroaromatic explosives ; chlorobenzenes ; fiber ; chlorophenols
收录类别	SCI
原文出处	false
语种	英语
WOS记录号	WOS:000281921200002
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/103407]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Instrumentat & Analyt Chem, Key Lab Separat Sci Analyt Chem,CAS, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Chen, Shiheng,Peng, Hong,Wu, Dapeng,et al. Temperature-controlled headspace liquid-phase microextraction device using volatile solvents[J]. journal of chromatography a,2010,1217(38):5883-5889.
APA	Chen, Shiheng,Peng, Hong,Wu, Dapeng,&Guan, Yafeng.(2010).Temperature-controlled headspace liquid-phase microextraction device using volatile solvents.journal of chromatography a,1217(38),5883-5889.
MLA	Chen, Shiheng,et al."Temperature-controlled headspace liquid-phase microextraction device using volatile solvents".journal of chromatography a 1217.38(2010):5883-5889.