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dc.contributor.authorMattos, Cleiton dos Santos-
dc.contributor.authordo Carmo, Devaney Ribeiro-
dc.contributor.authorde Oliveira, Marcelo Firmino-
dc.contributor.authorStradiotto, Nelson Ramos-
dc.identifier.citationInternational Journal of Electrochemical Science. Belgrade: Electrochemical Science Group, v. 3, n. 3, p. 338-345, 2008.-
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.publisherElectrochemical Science Group-
dc.sourceWeb of Science-
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.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
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.rights.accessRightsAcesso aberto-
dc.relation.ispartofInternational Journal of Electrochemical Science-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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