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Article: Application of capillary electrophoresis for trace ion analysis in rain water

TitleApplication of capillary electrophoresis for trace ion analysis in rain water
Authors
KeywordsCapillary dectrophoresis
Cation analysis
Rain water
Trace analysis
Transient isotachophoresis
Issue Date2000
PublisherJohn Wiley & Sons, Inc.
Citation
Journal Of Microcolumn Separations, 2000, v. 12 n. 6, p. 337-344 How to Cite?
AbstractSolving the problem due to transition metals' comigration during electrokinetic injection, the transient isotachophoresis (ITP) procedure was developed to preconcentrate and focus transition metals during electrokinetic injection. It was found to provide a suitable method for trace metals' preconcentration from rainwater at sub-μg/L level from buffer system consisting of 30 mM hydroxylamine hydrochloride, 0.1 mM 1,10-phenanthroline, 1% methanol, 15 mM ammonium chloride, and 0.08 M urea at pH = 3.7. Trace metals as Cd2+, Zn2+, Cu2+, Co2+, and Fe2+ (total Fe determined as Fe2+) are determined with working range from 0.5-80 μg/L, repeatability less than 7%, and detection limits from 0.1 to 0.5 μg/L under optimized operation conditions as follows: Injection at 3 kV for 40 s prior to CE run at +15 kV in buffer system developed and with 0.4 mM tetrabutyl ammonium bromide added to rain sample as terminating ion. Leading and terminating ion effect, buffer additive, and operation conditions on performance of ITP procedure were investigated. Procedure developed was applied for trace metals' determination in rain water collected in Hong Kong. It provides fast, efficient, and economic method determining transition metals in rain sample down to sub-μg/L level, reducing sample pretreatment time and eliminating off-column preconcentration steps often leading to contamination problems for transition metals determination at μg/L level. © 2000 John Wiley & Sons, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/69519
ISSN
2003 Impact Factor: 2.356
2004 SCImago Journal Rankings: 1.050
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_HK
dc.contributor.authorTung, HSen_HK
dc.date.accessioned2010-09-06T06:14:25Z-
dc.date.available2010-09-06T06:14:25Z-
dc.date.issued2000en_HK
dc.identifier.citationJournal Of Microcolumn Separations, 2000, v. 12 n. 6, p. 337-344en_HK
dc.identifier.issn1040-7685en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69519-
dc.description.abstractSolving the problem due to transition metals' comigration during electrokinetic injection, the transient isotachophoresis (ITP) procedure was developed to preconcentrate and focus transition metals during electrokinetic injection. It was found to provide a suitable method for trace metals' preconcentration from rainwater at sub-μg/L level from buffer system consisting of 30 mM hydroxylamine hydrochloride, 0.1 mM 1,10-phenanthroline, 1% methanol, 15 mM ammonium chloride, and 0.08 M urea at pH = 3.7. Trace metals as Cd2+, Zn2+, Cu2+, Co2+, and Fe2+ (total Fe determined as Fe2+) are determined with working range from 0.5-80 μg/L, repeatability less than 7%, and detection limits from 0.1 to 0.5 μg/L under optimized operation conditions as follows: Injection at 3 kV for 40 s prior to CE run at +15 kV in buffer system developed and with 0.4 mM tetrabutyl ammonium bromide added to rain sample as terminating ion. Leading and terminating ion effect, buffer additive, and operation conditions on performance of ITP procedure were investigated. Procedure developed was applied for trace metals' determination in rain water collected in Hong Kong. It provides fast, efficient, and economic method determining transition metals in rain sample down to sub-μg/L level, reducing sample pretreatment time and eliminating off-column preconcentration steps often leading to contamination problems for transition metals determination at μg/L level. © 2000 John Wiley & Sons, Inc.en_HK
dc.languageengen_HK
dc.publisherJohn Wiley & Sons, Inc.en_HK
dc.relation.ispartofJournal of Microcolumn Separationsen_HK
dc.rightsJournal of Microcolumn Separations. Copyright © John Wiley & Sons, Inc.en_HK
dc.subjectCapillary dectrophoresisen_HK
dc.subjectCation analysisen_HK
dc.subjectRain wateren_HK
dc.subjectTrace analysisen_HK
dc.subjectTransient isotachophoresisen_HK
dc.titleApplication of capillary electrophoresis for trace ion analysis in rain wateren_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1040-7685&volume=12&issue=6&spage=337&epage=344&date=2000&atitle=Application+of+capillary+electrophoresis+for+trace+ion+analysis+in+rain+wateren_HK
dc.identifier.emailFung, YS:ysfung@hku.hken_HK
dc.identifier.authorityFung, YS=rp00697en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/1520-667X(2000)12:6<337::AID-MCS1>3.0.CO;2-O-
dc.identifier.scopuseid_2-s2.0-0000622169en_HK
dc.identifier.hkuros54426en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000622169&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume12en_HK
dc.identifier.issue6en_HK
dc.identifier.spage337en_HK
dc.identifier.epage344en_HK
dc.identifier.isiWOS:000087951900001-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridFung, YS=13309754700en_HK
dc.identifier.scopusauthoridTung, HS=7006351429en_HK

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