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题名: Membrane-Extraction Ion Mobility Spectrometry for in Situ Detection of Chlorinated Hydrocarbons in Water
作者: Du, Yongzhai1;  Zhang, Wei1;  Whitten, William1;  Li, Haiyang2;  Watson, David B.1;  Xu, Jun1
刊名: ANALYTICAL CHEMISTRY
发表日期: 2010-05-15
DOI: 10.1021/ac100162d
卷: 82, 期:10, 页:4089-4096
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: Membrane-extraction ion mobility spectrometry (ME-IMS) has been developed for in situ sampling and analysis of trace chlorinated hydrocarbons in water in a single procedure. The sampling is configured so that aqueous contaminants permeate through a spiral hollow poly(dimethylsiloxane) (PDMS) membrane and are carried away by a vapor flow through the membrane tube. The extracted analyte flows into an atmospheric-pressure chemical-ionization (APCI) chamber and is analyzed in a specially made IMS analyzer. The PDMS membrane was found to effectively extract chlorinated hydrocarbon solvents from the liquid phase to vapor. The specialized IMS analyzer has measured resolutions of R = 33 and 41, respectively, for negative- and positive-modes and is capable of detecting aqueous tetrachloroethylene (PCE) and trichloroethylene (ICE) as low as 80 and 74 mu g/L in the negative ion mode, respectively. The time-dependent characteristics of sampling and detection of ICE are both experimentally and theoretically studied for various concentrations, membrane lengths, and flow rates. These characteristics demonstrate that membrane-extraction IMS is feasible for the continuous monitoring of chlorinated hydrocarbons in water.
关键词[WOS]: VOLATILE ORGANIC-COMPOUNDS ;  MASS-SPECTROMETER ;  AQUEOUS-SOLUTIONS ;  PERVAPORATION ;  AIR ;  IONIZATION ;  SEPARATION
语种: 英语
WOS记录号: WOS:000277531500018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141899
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.Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Du, Yongzhai,Zhang, Wei,Whitten, William,et al. Membrane-Extraction Ion Mobility Spectrometry for in Situ Detection of Chlorinated Hydrocarbons in Water[J]. ANALYTICAL CHEMISTRY,2010,82(10):4089-4096.
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