Simple, direct and simultaneous stripping voltammetric determination of lead and copper in gasoline using an in situ mercury film electrode

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dc.contributor.authorMartiniano, Lorena C.
dc.contributor.authorAlmeida, Joseany de M. S.
dc.contributor.authorCavalcante, Glene H. R.
dc.contributor.authorMarques, Edmar P.
dc.contributor.authorFonseca, Teresa C. O.
dc.contributor.authorPaim, Leonardo L. [UNESP]
dc.contributor.authorSouza, Antônio G.
dc.contributor.authorStradiotto, Nelson R. [UNESP]
dc.contributor.authorAucélio, Ricardo Q.
dc.contributor.authorMarques, Aldaléa L. B.
dc.contributor.institutionUniversidade Federal da Paraíba (UFPB)
dc.contributor.institutionDIQUIM-CENPES/PETRÓLEO BRASILEIRO S/A-PETROBRAS
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInstitute of Chemistry, PUC-RIO
dc.date.accessioned2018-12-11T17:24:33Z
dc.date.available2018-12-11T17:24:33Z
dc.date.issued2014-01-01
dc.description.abstractAn improved procedure is presented to determine Pb(II) and Cu(II) in gasoline using a mercury film electrode generated in situ. The method is based on the reduction of the metal ions at adequate potentials on the glassy carbon electrode, in whose optimized microemulsion medium composition, the ions can be determined directly and simultaneously by differential pulse anodic stripping voltammetry. Good results were obtained in terms of analytical performance and voltammetric wave forms, with two stripping peaks near to -0.420 V and -0.13 V, attributed to Pb(II) and Cu(II), respectively. Linear responses for both metal ions indicated quite low detection limits (2.1x 10-9 mol L-1 for Pb(II) and 2.4 x 10-9 mol L-1 for Cu(II)). The method was applied successfully to real gasoline samples, presenting good results for precision (variation coefficients of 12.4% and 10.2%) and accuracy (recoveries ranging from 96.7 to 99.33% and 101.33 to 102.67%), for Pb(II) and Cu(II), respectively. © 2014 Bentham Science Publishers.en
dc.description.affiliationDepartment of Chemical Technology, LPQA/LAPQAP-UFMA, São Luis, MA
dc.description.affiliationDepartment of Chemistry, CCEN-UFPB, João Pessoa, PB
dc.description.affiliationDIQUIM-CENPES/PETRÓLEO BRASILEIRO S/A-PETROBRAS, Rio de Janeiro, RJ
dc.description.affiliationInstitute of Chemistry, UNESP, 14801-970, Araraquara, SP
dc.description.affiliationInstitute of Chemistry, PUC-RIO, Rio de Janeiro, RJ
dc.description.affiliationUnespInstitute of Chemistry, UNESP, 14801-970, Araraquara, SP
dc.format.extent498-504
dc.identifier.citationCurrent Analytical Chemistry, v. 10, n. 4, p. 498-504, 2014.
dc.identifier.issn1573-4110
dc.identifier.scopus2-s2.0-84904731260
dc.identifier.urihttp://hdl.handle.net/11449/177229
dc.language.isoeng
dc.relation.ispartofCurrent Analytical Chemistry
dc.relation.ispartofsjr0,274
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAnodic stripping voltammetry
dc.subjectGasoline microemulsion
dc.subjectLead and copper
dc.subjectSimultaneous determination
dc.titleSimple, direct and simultaneous stripping voltammetric determination of lead and copper in gasoline using an in situ mercury film electrodeen
dc.typeArtigo

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