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Article: Determination of carbonyl compounds in air by electrochromatography

TitleDetermination of carbonyl compounds in air by electrochromatography
Authors
KeywordsAldehydes
Capillary electrophoresis
Carbonyl compounds
Electrochromatography
Ketones
Issue Date2001
PublisherWiley - V C H Verlag GmbH & Co KGaA.
Citation
Electrophoresis, 2001, v. 22 n. 11, p. 2270-2277 How to Cite?
AbstractA new analytical procedure based on electrochromatography was developed for the separation and quantitation of 14 aldehydes and ketones (formaldehyde, acetaldehyde, acetone, acrolein, propionaldehyde, butanone, crotonaldehyde, isobutyraldehyde/butyraldehyde, 2-pentenaldehyde, isovaleraldehyde, valeraldehyde, benzaldehyde and hexanaldehyde) in ambient air currently to be regulated by the Hong Kong Environmental Protection Department. A volatile mobile phase using ammonium acetate compatible with mass spectrometry detection was developed and optimized as follows. Methanol: acetonitrile: aqueous buffer (4 mM ammonium acetate) = 65:5:30% v/v. With electrokinetic injection at 5 kV for 2 s, aqueous buffer pH adjusted to 8, applied voltage controlled at 25 kV, and detection at 360 nm in a fused-silica column packed with 3 μm ODS, a satisfactory separation was obtained for the 14 carbonyl compounds investigated. The working ranges in acetonitrile solution were found to vary from 0.25 to 79 mg/L with a correlation coefficient greater than 0.99, detection limits from 0.10 to 0.63 mg/L, and precision (relative standard deviation, n=3) from 2.3 to 9.2%. Under an air flow rate of 0.3 L/min for a sampling time of 1 h, the working ranges varied from 0.030 to 11 000 μg/m3 and detection limits from 0.011 to 0.084 μg/m3. The method has been successfully applied to monitor three carbonyl compounds in four urban and rural sites in Hong Kong and gave hourly readings of three carbonyl compounds for all the sites investigated with a separation time less than 25 min.
Persistent Identifierhttp://hdl.handle.net/10722/69811
ISSN
2015 Impact Factor: 2.482
2015 SCImago Journal Rankings: 0.896
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_HK
dc.contributor.authorLong, Yen_HK
dc.date.accessioned2010-09-06T06:17:03Z-
dc.date.available2010-09-06T06:17:03Z-
dc.date.issued2001en_HK
dc.identifier.citationElectrophoresis, 2001, v. 22 n. 11, p. 2270-2277en_HK
dc.identifier.issn0173-0835en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69811-
dc.description.abstractA new analytical procedure based on electrochromatography was developed for the separation and quantitation of 14 aldehydes and ketones (formaldehyde, acetaldehyde, acetone, acrolein, propionaldehyde, butanone, crotonaldehyde, isobutyraldehyde/butyraldehyde, 2-pentenaldehyde, isovaleraldehyde, valeraldehyde, benzaldehyde and hexanaldehyde) in ambient air currently to be regulated by the Hong Kong Environmental Protection Department. A volatile mobile phase using ammonium acetate compatible with mass spectrometry detection was developed and optimized as follows. Methanol: acetonitrile: aqueous buffer (4 mM ammonium acetate) = 65:5:30% v/v. With electrokinetic injection at 5 kV for 2 s, aqueous buffer pH adjusted to 8, applied voltage controlled at 25 kV, and detection at 360 nm in a fused-silica column packed with 3 μm ODS, a satisfactory separation was obtained for the 14 carbonyl compounds investigated. The working ranges in acetonitrile solution were found to vary from 0.25 to 79 mg/L with a correlation coefficient greater than 0.99, detection limits from 0.10 to 0.63 mg/L, and precision (relative standard deviation, n=3) from 2.3 to 9.2%. Under an air flow rate of 0.3 L/min for a sampling time of 1 h, the working ranges varied from 0.030 to 11 000 μg/m3 and detection limits from 0.011 to 0.084 μg/m3. The method has been successfully applied to monitor three carbonyl compounds in four urban and rural sites in Hong Kong and gave hourly readings of three carbonyl compounds for all the sites investigated with a separation time less than 25 min.en_HK
dc.languageengen_HK
dc.publisherWiley - V C H Verlag GmbH & Co KGaA.en_HK
dc.relation.ispartofElectrophoresisen_HK
dc.subjectAldehydesen_HK
dc.subjectCapillary electrophoresisen_HK
dc.subjectCarbonyl compoundsen_HK
dc.subjectElectrochromatographyen_HK
dc.subjectKetonesen_HK
dc.titleDetermination of carbonyl compounds in air by electrochromatographyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0173-0835&volume=22&spage=2270&epage=2277&date=2001&atitle=Determination+of+carbonyl+compounds+in+air+by+electrochromatographyen_HK
dc.identifier.emailFung, YS:ysfung@hku.hken_HK
dc.identifier.authorityFung, YS=rp00697en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/1522-2683(20017)22:11<2270::AID-ELPS2270>3.0.CO;2-Ken_HK
dc.identifier.pmid11504062en_HK
dc.identifier.scopuseid_2-s2.0-0034919822en_HK
dc.identifier.hkuros68487en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034919822&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume22en_HK
dc.identifier.issue11en_HK
dc.identifier.spage2270en_HK
dc.identifier.epage2277en_HK
dc.identifier.isiWOS:000170175800021-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridFung, YS=13309754700en_HK
dc.identifier.scopusauthoridLong, Y=7203043014en_HK

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