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题名: Preparation of stir bars for sorptive extraction using sol-gel technology
作者: Liu, WM;  Wang, HM;  Guan, YF
关键词: sol-gel ;  stir bar sorptive extraction ;  supersonic sorptive extraction ;  extraction methods ;  alkanes ;  polynuclear aromatic hydrocrabons ;  pesticides ;  organophosphorus compounds
刊名: JOURNAL OF CHROMATOGRAPHY A
发表日期: 2004-08-06
DOI: 10.1016/j.chroma.2004.06.036
卷: 1045, 期:1-2, 页:15-22
收录类别: SCI
文章类型: Article
项目归属: 105
产权排名: 1;1
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
英文摘要: A sol-gel coating method for the preparation of extractive phase on bars used in sorptive microextraction is described. The extraction phase of poly(dimethylsiloxane) is partially crosslinked with the sol-gel network, and the most part is physically incorporated in the network. Three aging steps at different temperatures are applied to complete the crosslinking process. Thirty-micrometer-thick coating layer is obtained by one coating process. The improved coating shows good thermal stability up to 300degreesC. Spiked aqueous samples containing n-alkanes, polycyclic aromatic hydrocarbons and organophosphorus pesticides were analyzed by using the sorptive bars and GC. The results demonstrate that it is suitable for both aploar and polar analytes. The detection limit for chrysene is 7.44 ng/L, 0.74 ng/L for C-19 and 0.9 ng/L for phorate. The extraction equilibration can be reached in less than 15 min by supersonic extraction with the bars of 30 mum coating layer. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: MICROCOLUMN-LIQUID-CHROMATOGRAPHY ;  CAPILLARY GAS-CHROMATOGRAPHY ;  PHASE MICROEXTRACTION ;  MASS-SPECTROMETRY ;  STATIONARY-PHASE ;  PESTICIDE-RESIDUES ;  AQUEOUS SAMPLES ;  WATER SAMPLES ;  FIBERS ;  ELECTROCHROMATOGRAPHY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000223212000002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81693
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Analyt Chem & Microinstrumentat, Dalian 116012, Peoples R China

Recommended Citation:
Liu, WM,Wang, HM,Guan, YF. Preparation of stir bars for sorptive extraction using sol-gel technology[J]. JOURNAL OF CHROMATOGRAPHY A,2004,1045(1-2):15-22.
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