Determination of sulfur compounds in gasoline using mercury film electrode by square wave voltammetry

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dc.contributor.authorSerafim, Diana Maria [UNESP]
dc.contributor.authorStradiotto, Nelson Ramos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:19:24Z
dc.date.available2014-05-20T14:19:24Z
dc.date.issued2008-06-01
dc.description.abstractA sensitive method based on square wave voltammetry is described for the quantitative determination of elemental sulfur, disulfide and mercaptan in gasoline using a mercury film electrode. These sulfur compounds can be quantified by direct dissolution of gasoline in a supporting electrolyte followed by subsequent voltammetric measurement. The supporting electrolyte is 1.4 mol L-1 sodium acetate and No acetic acid in methanol. Chemical and optimum operational conditions for the formation of the mercury film were analyzed in this study. The values obtained were a 4.3 mu m thickness for the mercury film, a 1000 rpm rotation frequency, -0.9 V applied potential and 600 s depositing time. Voltammetric measurements were obtained using square wave voltammetry with detection limits of the 3.0 x 10(-9), 1.6 x 10(-7) and 4.9 x 10(-7) mol L-1 for elemental sulfur, disulfide and mercaptan, respectively. (C) 2007 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNESP, Inst Quim, Dept Quim Analit, Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, Dept Quim Analit, Araraquara, SP, Brazil
dc.format.extent1007-1013
dc.identifierhttp://dx.doi.org/10.1016/j.fuel.2007.07.012
dc.identifier.citationFuel. Oxford: Elsevier B.V., v. 87, n. 7, p. 1007-1013, 2008.
dc.identifier.doi10.1016/j.fuel.2007.07.012
dc.identifier.issn0016-2361
dc.identifier.lattes0072173018005712
dc.identifier.urihttp://hdl.handle.net/11449/25854
dc.identifier.wosWOS:000255117400001
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofFuel
dc.relation.ispartofjcr4.908
dc.relation.ispartofsjr1,891
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectsulfur compoundsen
dc.subjectsquare wave voltammetryen
dc.subjectmercury film electrodeen
dc.subjectgasolineen
dc.titleDetermination of sulfur compounds in gasoline using mercury film electrode by square wave voltammetryen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes0072173018005712
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Química Analítica - IQ