Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/35090
DC FieldValueLanguage
dc.contributor.authorYan, C.T.en_US
dc.contributor.author鄭政峰zh_TW
dc.contributor.authorShih, T.S.en_US
dc.contributor.authorJen, J.F.en_US
dc.date2004zh_TW
dc.date.accessioned2014-06-06T07:48:45Z-
dc.date.available2014-06-06T07:48:45Z-
dc.identifier.issn0039-9140zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/35090-
dc.description.abstractMicrowave-assisted desorption (MAD) coupled to in situ headspace solid-phase microextraction (HS-SPME) was first proposed as a possible alternative pretreatment of samples in absorbent collected from workplace monitoring. Aniline collected on silica get was investigated. Under microwave irradiation, the aniline was desorbed from silica gel and directly absorbed onto the SPME fiber in the headspace. Having been sampled on the SPME fiber, and desorbed in the GC injection port, aniline was analyzed using a GC-FID system. Parameters that affect the proposed extraction efficiency, including the extraction media and its pH, the microwave irradiation power and the irradiation time as well as desorption parameters of the GC injector, were investigated. Experimental results revealed that the extraction of a 150-mg silica gel sample using a 0.8-ml aqueous solution (pH 12) and a PDMS/DVB fiber under medium-high-powered irradiation (345 W) for 3 min maximized the efficiency of extraction. Desorption of aniline from the SPME fiber was optimal at 230degreesC held for 3 min. The detection limit was 0.09 ng. The proposed method provided a simple, fast, and organic solvent-free procedure to analyze aniline from a silica gel matrix. (C) 2004 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationTalantaen_US
dc.relation.ispartofseriesTalanta, Volume 64, Issue 3, Page(s) 650-654.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.talanta.2004.03.053en_US
dc.subjectanilineen_US
dc.subjectmicrowave-assisted desorptionen_US
dc.subjectheadspace SPMEen_US
dc.subjectGC-FIDen_US
dc.subjectsilicaen_US
dc.subjectgelen_US
dc.subjectperformance liquid-chromatographyen_US
dc.subjectelectron-capture detectionen_US
dc.subjectgas-chromatographyen_US
dc.subjectaromatic-aminesen_US
dc.subjectmass-spectrometryen_US
dc.subjectwateren_US
dc.subjectchlorophenolsen_US
dc.subjectsamplesen_US
dc.subjectairen_US
dc.subjectchemistryen_US
dc.titleDetermination of aniline in silica gel sorbent by one-step in situ microwave-assisted desorption coupled to headspace solid-phase microextraction and GC-FIDen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.talanta.2004.03.053zh_TW
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextnone-
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