Determination of the vinylsulphone azo dye, remazol brilliant orange 3R, by cathodic stripping voltammetry
dc.contributor.author | Zanoni, Maria Valnice Boldrin [UNESP] | |
dc.contributor.author | Carneiro, P. A. | |
dc.contributor.author | Furlan, Maysa [UNESP] | |
dc.contributor.author | Duarte, E. S. | |
dc.contributor.author | Guaratini, CCI | |
dc.contributor.author | Fogg, A. G. | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Loughborough Univ Technol | |
dc.date.accessioned | 2014-05-20T15:27:27Z | |
dc.date.available | 2014-05-20T15:27:27Z | |
dc.date.issued | 1999-04-05 | |
dc.description.abstract | Remazol brilliant orange 3R shows only a voltammetric peak for the reduction of the azo group. No peak was observed for the reduction of the sulfatoethylsulfone or vinylsulfone reactive groups. The reduction of a pre-protonated ate group involving a two-electron process, gives a hydrate derivative in acidic solution. In alkaline solution the reduction process occurs at more negative potential with the formation of an unstable hydrate compound which decomposes via HN-NH bond cleavage and loss of a sulfate group. Optimum conditions are given for the cathodic stripping voltammetric determination of dir: dye in aqueous solution. The optimum accumulation potential and time were 0 V and up to 60 s, respectively. Linear calibration graphs were obtained from 30 to 300 ng ml(-1) in pH 4 and 6.2 to 62 ng ml(-1) in pH 10. The limit of determination obtained was 1.5 ng ml(-1) (pH 10). The coefficient of variation was 2.6% (n = 7) at 62 ng ml(-1) of the reactive dye. (C) 1999 Elsevier B.V. B.V. All rights reserved. | en |
dc.description.affiliation | UNESP, Inst Quim, BR-14807970 Araraquara, SP, Brazil | |
dc.description.affiliation | Loughborough Univ Technol, Dept Chem, Loughborough LE11 3TU, Leics, England | |
dc.description.affiliationUnesp | UNESP, Inst Quim, BR-14807970 Araraquara, SP, Brazil | |
dc.format.extent | 385-392 | |
dc.identifier | http://dx.doi.org/10.1016/S0003-2670(98)00735-1 | |
dc.identifier.citation | Analytica Chimica Acta. Amsterdam: Elsevier B.V., v. 385, n. 1-3, p. 385-392, 1999. | |
dc.identifier.doi | 10.1016/S0003-2670(98)00735-1 | |
dc.identifier.issn | 0003-2670 | |
dc.identifier.lattes | 1308042794786872 | |
dc.identifier.lattes | 1308042794786872 | |
dc.identifier.orcid | 0000-0002-2296-1393 | |
dc.identifier.uri | http://hdl.handle.net/11449/37428 | |
dc.identifier.wos | WOS:000079535500042 | |
dc.language.iso | eng | |
dc.publisher | Elsevier B.V. | |
dc.relation.ispartof | Analytica Chimica Acta | |
dc.relation.ispartofjcr | 5.123 | |
dc.relation.ispartofsjr | 1,512 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | reactive dye | pt |
dc.subject | remazol brilliant orange 3R | pt |
dc.subject | electrochemical behavior | pt |
dc.subject | bidimensional NMR | pt |
dc.subject | cathodic stripping voltammetry | pt |
dc.title | Determination of the vinylsulphone azo dye, remazol brilliant orange 3R, by cathodic stripping voltammetry | en |
dc.type | Artigo | |
dcterms.license | http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy | |
dcterms.rightsHolder | Elsevier B.V. | |
unesp.author.lattes | 1308042794786872 | |
unesp.author.lattes | 1308042794786872 | |
unesp.author.orcid | 0000-0002-2296-1393[1] | |
unesp.campus | Universidade Estadual Paulista (Unesp), Instituto de Química, Araraquara | pt |
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