Design of a simple detection cell with extended optical path length for capillary electrophoresis: Application to multiresidue pesticide analysis

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dc.contributor.authorGalhiane, Mario Sergio [UNESP]
dc.contributor.authorRissato, SR
dc.contributor.authorApon, B. M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionChromapon Inc
dc.date.accessioned2014-05-20T13:26:47Z
dc.date.available2014-05-20T13:26:47Z
dc.date.issued2005-01-01
dc.description.abstractAbsorbance detection in capillary electrophoresis (CE), offers an excellent mass sensitivity, but poor concentration detection limits owing to very small injection volumes (normally I to 10 nL). This aspect can be a limiting factor in the applicability of CE/UV to detect species at trace levels, particularly pesticide residues. In the present work, the optical path length of an on-column detection cell was increased through a proper connection of the column (75 mu m i.d.) to a capillary detection cell of 180 mu m optical path length in order to improve detectability. It is shown that the cell with an extended optical path length results in a significant gain in terms of signal to noise ratio. The effect of the increase in the optical path length has been evaluated for six pesticides, namely, carbendazim, thiabendazole, imazalil, procymidone triadimefon, and prochloraz. The resulting optical enhancement of the detection cell provided detection limits of ca. 0.3 mu g/mL for the studied compounds, thus enabling the residue analysis by CE/UV.en
dc.description.affiliationUNESP, Dept Chem, BR-17033360 Bauru, SP, Brazil
dc.description.affiliationChromapon Inc., Whittier, CA USA
dc.description.affiliationUnespUNESP, Dept Chem, BR-17033360 Bauru, SP, Brazil
dc.format.extent2349-2359
dc.identifierhttp://dx.doi.org/10.1080/10826070500187533
dc.identifier.citationJournal of Liquid Chromatography & Related Technologies. Philadelphia: Taylor & Francis Inc., v. 28, n. 15, p. 2349-2359, 2005.
dc.identifier.doi10.1080/10826070500187533
dc.identifier.issn1082-6076
dc.identifier.lattes3612277056838097
dc.identifier.lattes2611597065632795
dc.identifier.urihttp://hdl.handle.net/11449/8686
dc.identifier.wosWOS:000232104500005
dc.language.isoeng
dc.publisherTaylor & Francis Inc
dc.relation.ispartofJournal of Liquid Chromatography & Related Technologies
dc.relation.ispartofjcr0.827
dc.relation.ispartofsjr0,297
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectpesticide residue analysispt
dc.subjectcapillary electrophoresis (CE)pt
dc.subjectdetection cellpt
dc.subjectCE/UVpt
dc.titleDesign of a simple detection cell with extended optical path length for capillary electrophoresis: Application to multiresidue pesticide analysisen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderTaylor & Francis Inc
unesp.author.lattes3612277056838097
unesp.author.lattes2611597065632795
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt

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