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pubmed-article:17933006rdf:typepubmed:Citationlld:pubmed
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pubmed-article:17933006pubmed:issue22lld:pubmed
pubmed-article:17933006pubmed:dateCreated2007-11-7lld:pubmed
pubmed-article:17933006pubmed:abstractTextA novel membrane inlet interface coupled to a single-photon ionization (SPI) miniature time-of-flight mass spectrometer has been developed for on-line rapid measurement of volatile organic compounds (VOCs). The vacuum ultraviolet (VUV) light source for SPI was a commercial krypton discharge lamp with photon energy of 10.6 eV and photon flux of 10(10) photons/s. The experimental results showed that the sensitivity was 5 times as high as obtained with the traditional membrane inlet. The enrichment efficiency could be adjusted in the range of 10 to 20 times for different VOCs when a buffer cell was added to the inlet interface, and the memory effect was effectively eliminated. A detection limit as low as 25 parts-per-billion by volume (ppbv) for benzene has been achieved, with a linear dynamic range of three orders of magnitude. The rise times were 6 s, 10 s and 15 s for benzene, toluene and p-xylene, respectively, and the fall time was only 6 s for all of these compounds. The analytical capacity of this system was demonstrated by the on-line analysis of VOCs in single puff mainstream cigarette smoke, in which more than 50 compounds were detected in 2 s.lld:pubmed
pubmed-article:17933006pubmed:languageenglld:pubmed
pubmed-article:17933006pubmed:journalhttp://linkedlifedata.com/r...lld:pubmed
pubmed-article:17933006pubmed:statusPubMed-not-MEDLINElld:pubmed
pubmed-article:17933006pubmed:issn0951-4198lld:pubmed
pubmed-article:17933006pubmed:authorpubmed-author:WangJundeJlld:pubmed
pubmed-article:17933006pubmed:authorpubmed-author:HaiyangLiLlld:pubmed
pubmed-article:17933006pubmed:authorpubmed-author:HouKeyongKlld:pubmed
pubmed-article:17933006pubmed:copyrightInfoCopyright 2007 John Wiley & Sons, Ltd.lld:pubmed
pubmed-article:17933006pubmed:issnTypePrintlld:pubmed
pubmed-article:17933006pubmed:volume21lld:pubmed
pubmed-article:17933006pubmed:ownerNLMlld:pubmed
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pubmed-article:17933006pubmed:pagination3554-60lld:pubmed
pubmed-article:17933006pubmed:year2007lld:pubmed
pubmed-article:17933006pubmed:articleTitleA new membrane inlet interface of a vacuum ultraviolet lamp ionization miniature mass spectrometer for on-line rapid measurement of volatile organic compounds in air.lld:pubmed
pubmed-article:17933006pubmed:affiliationDalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P.R. China.lld:pubmed
pubmed-article:17933006pubmed:publicationTypeJournal Articlelld:pubmed