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Article: Determination of oxoanions in river water by capillary electrophoresis

TitleDetermination of oxoanions in river water by capillary electrophoresis
Authors
KeywordsCapillary electrophoresis
Oxoanions
River water
Trace analysis
Issue Date2001
PublisherWiley - V C H Verlag GmbH & Co KGaA.
Citation
Electrophoresis, 2001, v. 22 n. 11, p. 2251-2259 How to Cite?
AbstractA new capillary electrophoresis (CE) procedure was developed for simultaneous determination of ten oxoanions (CrO4 2-, SeO4 2-, MoO4 2-, WO4 2-, VO4 3-, SeO3 2-, AsO4 3-, TeO3 2-, TeO4 2-, and AsO3 3-) which were baseline-separated from each other and from the interfering UV absorbing anions (NO3 - and NO2 -) commonly found in environmental water samples. The new background electrolyte system developed contained 5 mM potassium phosphate and 0.007 mM octadecyltrimethylammonium hydroxide, pH 11.2. The optimized working conditions were electrokinetic sampling at -5 kV for 10 s, running voltage at -15 kV with 5 μA current, and detection wavelength at 205 nm. No interference was observed for non-UV-absorbing anions and UV-absorbing anions up to 20 and 10 times higher concentrations respectively. The speed of analysis was fast, with a complete CE run within 6 min. Wide linear ranges (1-2000 μg/L), good repeatability in migration time (relative standard deviation RSD 0.55-2.8%), satisfactory precision in peak area (RSD 3.8-5.6%) and peak height (RSD 3.9-5.3%) measurement, and detection limits (1-25 μg/L) sufficiently sensitive to detect oxoanions found in environmental water samples were obtained. The reliability of the CE procedure developed had been established by recovery test and parallel method determination using atomic absoprtion spectrophotometry for real river water sample.
Persistent Identifierhttp://hdl.handle.net/10722/69413
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.authorLau, KMen_HK
dc.date.accessioned2010-09-06T06:13:26Z-
dc.date.available2010-09-06T06:13:26Z-
dc.date.issued2001en_HK
dc.identifier.citationElectrophoresis, 2001, v. 22 n. 11, p. 2251-2259en_HK
dc.identifier.issn0173-0835en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69413-
dc.description.abstractA new capillary electrophoresis (CE) procedure was developed for simultaneous determination of ten oxoanions (CrO4 2-, SeO4 2-, MoO4 2-, WO4 2-, VO4 3-, SeO3 2-, AsO4 3-, TeO3 2-, TeO4 2-, and AsO3 3-) which were baseline-separated from each other and from the interfering UV absorbing anions (NO3 - and NO2 -) commonly found in environmental water samples. The new background electrolyte system developed contained 5 mM potassium phosphate and 0.007 mM octadecyltrimethylammonium hydroxide, pH 11.2. The optimized working conditions were electrokinetic sampling at -5 kV for 10 s, running voltage at -15 kV with 5 μA current, and detection wavelength at 205 nm. No interference was observed for non-UV-absorbing anions and UV-absorbing anions up to 20 and 10 times higher concentrations respectively. The speed of analysis was fast, with a complete CE run within 6 min. Wide linear ranges (1-2000 μg/L), good repeatability in migration time (relative standard deviation RSD 0.55-2.8%), satisfactory precision in peak area (RSD 3.8-5.6%) and peak height (RSD 3.9-5.3%) measurement, and detection limits (1-25 μg/L) sufficiently sensitive to detect oxoanions found in environmental water samples were obtained. The reliability of the CE procedure developed had been established by recovery test and parallel method determination using atomic absoprtion spectrophotometry for real river water sample.en_HK
dc.languageengen_HK
dc.publisherWiley - V C H Verlag GmbH & Co KGaA.en_HK
dc.relation.ispartofElectrophoresisen_HK
dc.subjectCapillary electrophoresisen_HK
dc.subjectOxoanionsen_HK
dc.subjectRiver wateren_HK
dc.subjectTrace analysisen_HK
dc.titleDetermination of oxoanions in river water by capillary electrophoresisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0173-0835&volume=22&spage=2251&epage=2259&date=2001&atitle=Determination+of+oxoanions+in+river+water+by+capillary+electrophoresisen_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<2251::AID-ELPS2251>3.0.CO;2-Ien_HK
dc.identifier.pmid11504060-
dc.identifier.scopuseid_2-s2.0-0034928472en_HK
dc.identifier.hkuros68483en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034928472&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume22en_HK
dc.identifier.issue11en_HK
dc.identifier.spage2251en_HK
dc.identifier.epage2259en_HK
dc.identifier.isiWOS:000170175800019-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridFung, YS=13309754700en_HK
dc.identifier.scopusauthoridLau, KM=7401559826en_HK

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