Voltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrode

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dc.contributor.authorMattos, Cleiton dos Santos [UNESP]
dc.contributor.authordo Carmo, Devaney Ribeiro [UNESP]
dc.contributor.authorde Oliveira, Marcelo Firmino
dc.contributor.authorStradiotto, Nelson Ramos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T13:29:56Z
dc.date.available2014-05-20T13:29:56Z
dc.date.issued2008-03-01
dc.description.abstractThis work presents a methodology for iron determination in fuel ethanol using a modified carbon paste electrode with 1.10 fenantroline/nafion. The electrochemical parameters were optimized for the proposed system and the voltammetric technique of square wave was employed for iron determination. An accumulation time of 5 minutes, such as a 100 mV of pulse magnitude (E(sw)) and frequency (f) of 25 Hz were used as optimized experimental conditions. The modified carbon paste electrode presented linear dependence of amperometric signal with iron concentration in a work range from 6.0x10(-6) until 2.0x10(-5) mol L(-1) of iron, exhibiting a linear correlation coefficient of 0.9884, a detection limit of 2.4 x10(-6) mol L(-1) (n = 3) and amperometric sensibility of 4.5x10(5) mu A/mol L(-1). Analytical curve method was used for iron determination at a commercial fuel sample. Flame atomic absorption spectroscopy was employed as comparative technique.en
dc.description.affiliationUNESP, Inst Quim Araraquara, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUNESP, Fac Engn, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUSP, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14040901 Ribeirao Preto, Brazil
dc.description.affiliationUnespUNESP, Inst Quim Araraquara, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Fac Engn, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.format.extent338-345
dc.identifierhttp://www.electrochemsci.org/papers/vol3/3030338.pdf
dc.identifier.citationInternational Journal of Electrochemical Science. Belgrade: Electrochemical Science Group, v. 3, n. 3, p. 338-345, 2008.
dc.identifier.fileWOS000256383800011.pdf
dc.identifier.issn1452-3981
dc.identifier.lattes0545046720519536
dc.identifier.lattes0072173018005712
dc.identifier.urihttp://hdl.handle.net/11449/10145
dc.identifier.wosWOS:000256383800011
dc.language.isoeng
dc.publisherElectrochemical Science Group
dc.relation.ispartofInternational Journal of Electrochemical Science
dc.relation.ispartofjcr1.369
dc.relation.ispartofsjr0,366
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectironen
dc.subjectfuel ethanolen
dc.subjectcarbon paste electrodeen
dc.subject1,10 fenantrolineen
dc.subjectsquare wave voltammetryen
dc.titleVoltammetric determination of total iron in fuel ethanol using a 1,10 fenantroline/nafion carbon paste-modified electrodeen
dc.typeArtigo
dcterms.licensehttp://www.electrochemsci.org/instruction.htm
dcterms.rightsHolderElectrochemical Science Group
unesp.author.lattes0545046720519536
unesp.author.lattes0072173018005712
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentFísica e Química - FEISpt

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Artigos - Química Analítica - IQ
Ilha Solteira - FEIS - Faculdade de Engenharia