Electrochemical reduction and determination of Cibacron Blue F3GA at poly-L-lysine modified glassy carbon electrode

dc.contributor.authorViana, ERC
dc.contributor.authorPereira, F. C.
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Rio Grande do Norte (UFRN)
dc.date.accessioned2014-05-20T15:21:45Z
dc.date.available2014-05-20T15:21:45Z
dc.date.issued2006-01-01
dc.description.abstractThe oxidation of a reactive dye, Cibacron Blue F3GA, CB, (C.I. 61211), widely used in the textile industries to color natural fibers, was studied by electrochemical techniques. The oxidation on glassy carbon electrode occurs in two steps at 2.0 < pH < 10 involving one electron transfer each to the amine group leading to the imide derivative. Stable films of poly-L-lysine (PLL) in the presence of glutaraldehyde (GA) 97.5%:2.5% on glassy carbon electrode can be used to detect low levels of dye using its oxidation peak at +0.75V by voltammetry. Linear calibration graphs were obtained for the CB reactive dye, from 1.0 X 10(-6) to 1.0 X 10(-5) mol L-1 in B-R buffer, pH 2.0, using a pre-concentration off-line during 10 min. The detection limit (3 sigma/slope) was calculated to be 4.5 X 10(-8) mol L-1. Films of PLL can readily be applied for the determination of CB dye bearing aminoanthraquinone as chromophore and chlorotriazinyl as reactive group at concentrations at least 100 times lesser than using a glassy carbon electrode without modification. The method described was applied for the determination of CB dye in tap water and raw water collected from the municipal treatment plant with a recovery of 89.2% +/- 5.4 and 88.0% +/- 6.5, respectively. (c) 2005 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUFRN, Dept Quim, BR-59072970 Natal, RN, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent145-152
dc.identifierhttp://dx.doi.org/10.1016/j.dyepig.2005.04.020
dc.identifier.citationDyes and Pigments. Oxford: Elsevier B.V., v. 71, n. 2, p. 145-152, 2006.
dc.identifier.doi10.1016/j.dyepig.2005.04.020
dc.identifier.issn0143-7208
dc.identifier.orcid0000-0002-2296-1393
dc.identifier.urihttp://hdl.handle.net/11449/32859
dc.identifier.wosWOS:000234938200011
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofDyes and Pigments
dc.relation.ispartofjcr3.767
dc.relation.ispartofsjr0,819
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectpoly-L-lysinept
dc.subjectCibacron Bluept
dc.subjectreactive dyespt
dc.subjectdye determinationpt
dc.subjectmodified electrodept
dc.titleElectrochemical reduction and determination of Cibacron Blue F3GA at poly-L-lysine modified glassy carbon electrodeen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0002-2296-1393[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt
unesp.departmentQuímica Analítica - IQARpt

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