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Article: Separation and determination of cations in beverage products by capillary zone electrophoresis

TitleSeparation and determination of cations in beverage products by capillary zone electrophoresis
Authors
KeywordsBeverage drinks
Capillary electrophoresis
Cation determination
Metal analysis
Orange juice
Tea
Issue Date2006
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/chroma
Citation
Journal Of Chromatography A, 2006, v. 1118 n. 1, p. 144-150 How to Cite?
AbstractCation determination is important for quality control of beverage products. To determine a large group simultaneously, a capillary electrophoresis procedure is developed with indirect UV at 214 nm in a three-complex buffer system (10 mM N,N-dimethylbenzylamine (DBA), 8 mM lactic acid and 2 mM 18-crown-6) with good mobility matching with desired cations. Under optimized conditions with pH adjusted to 4.65, a baseline separation is achieved for 14 cations (Rb+, NH4 +, K+, Ca2+, Na+, Mg2+, Mn2+, Co2+, Fe2+, Cd2+, Cr3+, Ni2+, Zn2+ and Cu2+) within 7 min using an uncoated silica column. To cover ng/l to μg/l range, both hydrostatic and electrokinetic sampling are studied, showing working ranges within (0.05-50)/(0.005-2) μg/l and detection limits (13-78)/(1.4-10) ng/l, respectively with satisfactory repeatability (RSD 0.31-0.47% for migration time, and 3.0-4.0% for peak height measurement). Agreeable results with established inductively coupled plasma-atomic emission spectrometry method have been obtained for orange juice and tea samples. © 2006 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/68884
ISSN
2015 Impact Factor: 3.926
2015 SCImago Journal Rankings: 1.774
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_HK
dc.contributor.authorLau, KMen_HK
dc.date.accessioned2010-09-06T06:08:36Z-
dc.date.available2010-09-06T06:08:36Z-
dc.date.issued2006en_HK
dc.identifier.citationJournal Of Chromatography A, 2006, v. 1118 n. 1, p. 144-150en_HK
dc.identifier.issn0021-9673en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68884-
dc.description.abstractCation determination is important for quality control of beverage products. To determine a large group simultaneously, a capillary electrophoresis procedure is developed with indirect UV at 214 nm in a three-complex buffer system (10 mM N,N-dimethylbenzylamine (DBA), 8 mM lactic acid and 2 mM 18-crown-6) with good mobility matching with desired cations. Under optimized conditions with pH adjusted to 4.65, a baseline separation is achieved for 14 cations (Rb+, NH4 +, K+, Ca2+, Na+, Mg2+, Mn2+, Co2+, Fe2+, Cd2+, Cr3+, Ni2+, Zn2+ and Cu2+) within 7 min using an uncoated silica column. To cover ng/l to μg/l range, both hydrostatic and electrokinetic sampling are studied, showing working ranges within (0.05-50)/(0.005-2) μg/l and detection limits (13-78)/(1.4-10) ng/l, respectively with satisfactory repeatability (RSD 0.31-0.47% for migration time, and 3.0-4.0% for peak height measurement). Agreeable results with established inductively coupled plasma-atomic emission spectrometry method have been obtained for orange juice and tea samples. © 2006 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/chromaen_HK
dc.relation.ispartofJournal of Chromatography Aen_HK
dc.rightsJournal of Chromatography A. Copyright © Elsevier BV.en_HK
dc.subjectBeverage drinksen_HK
dc.subjectCapillary electrophoresisen_HK
dc.subjectCation determinationen_HK
dc.subjectMetal analysisen_HK
dc.subjectOrange juiceen_HK
dc.subjectTeaen_HK
dc.titleSeparation and determination of cations in beverage products by capillary zone electrophoresisen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-9673&volume=1118&spage=144&epage=150&date=2006&atitle=Separation+and+determination+of+cations+in+beverage+products+by+capillary+zone+electrophoresis+en_HK
dc.identifier.emailFung, YS:ysfung@hku.hken_HK
dc.identifier.authorityFung, YS=rp00697en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.chroma.2006.04.030en_HK
dc.identifier.pmid16682047-
dc.identifier.scopuseid_2-s2.0-33646899352en_HK
dc.identifier.hkuros119238en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33646899352&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume1118en_HK
dc.identifier.issue1en_HK
dc.identifier.spage144en_HK
dc.identifier.epage150en_HK
dc.identifier.isiWOS:000238522500024-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridFung, YS=13309754700en_HK
dc.identifier.scopusauthoridLau, KM=7401559826en_HK

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