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Article: Free radical EPR spectroscopy analysis using blind source separation

TitleFree radical EPR spectroscopy analysis using blind source separation
Authors
KeywordsBlind source separation
Electron paramagnetic resonance
Free radical
Independent component analysis
Spectroscopy analysis
Issue Date2004
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/yjmre
Citation
Journal Of Magnetic Resonance, 2004, v. 166 n. 1, p. 82-91 How to Cite?
AbstractIn this paper, we propose a novel approach for electron paramagnetic resonance (EPR) mixture spectra analysis based on blind source separation (BSS) technique. EPR spectrum of a free radical is often superimposed by overlapping spectra of other species. It is important and challenging to accurately identify and quantify the 'pure' spectra from such mixtures. In this study, an automated BSS method implementing independent component analysis is used to extract the components from mixed EPR spectra that contain overlapping components of different paramagnetic centers. To apply this method, there is no requirement to know the component spectra or the number of components in advance. The method is applied to analyze free radical EPR spectra which are collected from standard chemical system, cultured cell suspense, and ex vivo rat kidneys by spin trapping EPR technique. Results show that the BSS method proposed here is capable of identifying the component EPR spectra from mixtures with unknown compositions. The BSS technique can offer powerful aids in resolving spectral overlapping problems in general EPR spectroscopy analysis. © 2003 Elsevier Inc. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/73953
ISSN
2015 Impact Factor: 2.889
2015 SCImago Journal Rankings: 1.157
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorRen, JYen_HK
dc.contributor.authorChang, CQen_HK
dc.contributor.authorFung, PCWen_HK
dc.contributor.authorShen, JGen_HK
dc.contributor.authorChan, FHYen_HK
dc.date.accessioned2010-09-06T06:56:22Z-
dc.date.available2010-09-06T06:56:22Z-
dc.date.issued2004en_HK
dc.identifier.citationJournal Of Magnetic Resonance, 2004, v. 166 n. 1, p. 82-91en_HK
dc.identifier.issn1090-7807en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73953-
dc.description.abstractIn this paper, we propose a novel approach for electron paramagnetic resonance (EPR) mixture spectra analysis based on blind source separation (BSS) technique. EPR spectrum of a free radical is often superimposed by overlapping spectra of other species. It is important and challenging to accurately identify and quantify the 'pure' spectra from such mixtures. In this study, an automated BSS method implementing independent component analysis is used to extract the components from mixed EPR spectra that contain overlapping components of different paramagnetic centers. To apply this method, there is no requirement to know the component spectra or the number of components in advance. The method is applied to analyze free radical EPR spectra which are collected from standard chemical system, cultured cell suspense, and ex vivo rat kidneys by spin trapping EPR technique. Results show that the BSS method proposed here is capable of identifying the component EPR spectra from mixtures with unknown compositions. The BSS technique can offer powerful aids in resolving spectral overlapping problems in general EPR spectroscopy analysis. © 2003 Elsevier Inc. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/yjmreen_HK
dc.relation.ispartofJournal of Magnetic Resonanceen_HK
dc.subjectBlind source separationen_HK
dc.subjectElectron paramagnetic resonanceen_HK
dc.subjectFree radicalen_HK
dc.subjectIndependent component analysisen_HK
dc.subjectSpectroscopy analysisen_HK
dc.subject.meshAlgorithmsen_HK
dc.subject.meshAnimalsen_HK
dc.subject.meshCHO Cells - chemistryen_HK
dc.subject.meshCricetinaeen_HK
dc.subject.meshCricetulusen_HK
dc.subject.meshCyclic N-Oxides - analysis - chemistryen_HK
dc.subject.meshElectron Spin Resonance Spectroscopy - methodsen_HK
dc.subject.meshFree Radicals - analysis - chemistryen_HK
dc.subject.meshHydroxyl Radical - analysis - chemistryen_HK
dc.subject.meshKidney - chemistryen_HK
dc.subject.meshNitric Oxide - analysis - chemistryen_HK
dc.subject.meshReactive Oxygen Species - analysis - chemistryen_HK
dc.subject.meshSignal Processing, Computer-Assisteden_HK
dc.subject.meshSolutions - analysis - chemistryen_HK
dc.subject.meshSuperoxides - analysis - chemistryen_HK
dc.titleFree radical EPR spectroscopy analysis using blind source separationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1090-7807&volume=166&issue=1&spage=82&epage=91&date=2004&atitle=Free+Radical+EPR+Spectroscopy+Analysis+using+blind+source+separationen_HK
dc.identifier.emailChang, CQ: cqchang@eee.hku.hken_HK
dc.identifier.emailShen, JG: shenjg@hku.hken_HK
dc.identifier.authorityChang, CQ=rp00095en_HK
dc.identifier.authorityShen, JG=rp00487en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jmr.2003.10.015en_HK
dc.identifier.pmid14675823-
dc.identifier.scopuseid_2-s2.0-0348222025en_HK
dc.identifier.hkuros88457en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0348222025&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume166en_HK
dc.identifier.issue1en_HK
dc.identifier.spage82en_HK
dc.identifier.epage91en_HK
dc.identifier.isiWOS:000187785800011-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridRen, JY=7403083223en_HK
dc.identifier.scopusauthoridChang, CQ=7407033052en_HK
dc.identifier.scopusauthoridFung, PCW=7101613315en_HK
dc.identifier.scopusauthoridShen, JG=7404929947en_HK
dc.identifier.scopusauthoridChan, FHY=7202586429en_HK

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