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Article: Isolation and determination of volatile organic compounds from water by dynamic purge-and-trap technique coupled with capillary gas chromatography

TitleIsolation and determination of volatile organic compounds from water by dynamic purge-and-trap technique coupled with capillary gas chromatography
Authors
KeywordsCapillary gas chromatography
Purge-and-trap
Trace determination
Volatile organic compounds
Issue Date2002
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/03067319.asp
Citation
International Journal Of Environmental Analytical Chemistry, 2002, v. 82 n. 7, p. 431-442 How to Cite?
AbstractThe preconcentration technique of purge-and-trap has been investigated in the present work for quantitative adsorption of volatile organic pollutants purged from water samples. A dynamic purging device with variable volume size has been constructed and tested to purge different concentrations of organic compounds. With Tenax GR as the adsorbent, a dynamic purge-and-trap technique was developed combining on-column preconcentration procedures using ambient trapping/thermal desorption/cryogenic focusing/back-flash injection prior to separation and determination using capillary gas chromatography. Various aromatic compounds in water were determined, giving linear working ranges over five orders of magnitude from 0.02 to 5000 μg/L. The analytical procedures were optimized under the assistance of ultrasonication with results validated for the determination of organic contaminants in underground water and tap water, giving over 93% recoveries anda detection limit of 0.01 μg/L, two orders of magnitude lower than those obtained using commercial available instruments with on-line configuration to minimize cross-contamination. The technique provides a potential automated method for in situ monitoring of volatile organic compounds in water.
Persistent Identifierhttp://hdl.handle.net/10722/68924
ISSN
2015 Impact Factor: 1.411
2015 SCImago Journal Rankings: 0.425
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWu, Zen_HK
dc.contributor.authorFung, YSen_HK
dc.date.accessioned2010-09-06T06:08:57Z-
dc.date.available2010-09-06T06:08:57Z-
dc.date.issued2002en_HK
dc.identifier.citationInternational Journal Of Environmental Analytical Chemistry, 2002, v. 82 n. 7, p. 431-442en_HK
dc.identifier.issn0306-7319en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68924-
dc.description.abstractThe preconcentration technique of purge-and-trap has been investigated in the present work for quantitative adsorption of volatile organic pollutants purged from water samples. A dynamic purging device with variable volume size has been constructed and tested to purge different concentrations of organic compounds. With Tenax GR as the adsorbent, a dynamic purge-and-trap technique was developed combining on-column preconcentration procedures using ambient trapping/thermal desorption/cryogenic focusing/back-flash injection prior to separation and determination using capillary gas chromatography. Various aromatic compounds in water were determined, giving linear working ranges over five orders of magnitude from 0.02 to 5000 μg/L. The analytical procedures were optimized under the assistance of ultrasonication with results validated for the determination of organic contaminants in underground water and tap water, giving over 93% recoveries anda detection limit of 0.01 μg/L, two orders of magnitude lower than those obtained using commercial available instruments with on-line configuration to minimize cross-contamination. The technique provides a potential automated method for in situ monitoring of volatile organic compounds in water.en_HK
dc.languageengen_HK
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/03067319.aspen_HK
dc.relation.ispartofInternational Journal of Environmental Analytical Chemistryen_HK
dc.subjectCapillary gas chromatographyen_HK
dc.subjectPurge-and-trapen_HK
dc.subjectTrace determinationen_HK
dc.subjectVolatile organic compoundsen_HK
dc.titleIsolation and determination of volatile organic compounds from water by dynamic purge-and-trap technique coupled with capillary gas chromatographyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0306-7319&volume=82&issue=7&spage=431&epage=442&date=2002&atitle=Isolation+and+determination+of+volatile+organic+compounds+from+water+by+dynamic+purge-and-trap+technique+coupled+with+capillary+gas+chromatographyen_HK
dc.identifier.emailFung, YS:ysfung@hku.hken_HK
dc.identifier.authorityFung, YS=rp00697en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/0306731021000015010en_HK
dc.identifier.scopuseid_2-s2.0-0036663277en_HK
dc.identifier.hkuros75908en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036663277&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume82en_HK
dc.identifier.issue7en_HK
dc.identifier.spage431en_HK
dc.identifier.epage442en_HK
dc.identifier.isiWOS:000179147200002-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridWu, Z=7501409490en_HK
dc.identifier.scopusauthoridFung, YS=13309754700en_HK

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