Show simple item record

dc.contributor.authorCastro, Suely S. L.
dc.contributor.authorMortimer, Roger J.
dc.contributor.authorde Oliveira, Marcelo F.
dc.contributor.authorStradiotto, Nelson Ramos [UNESP]
dc.date.accessioned2014-05-20T15:33:54Z
dc.date.available2014-05-20T15:33:54Z
dc.date.issued2008-03-01
dc.identifierhttp://dx.doi.org/10.3390/s8031950
dc.identifier.citationSensors. Basel: Molecular Diversity Preservation Int, v. 8, n. 3, p. 1950-1959, 2008.
dc.identifier.issn1424-8220
dc.identifier.urihttp://hdl.handle.net/11449/42352
dc.description.abstractThe electrocatalysis of dopamine has been studied using a cobalt hexacyanoferrate film (CoHCFe)-modified glassy carbon electrode. Using a rotating disk CoHCFe-modified electrode, the reaction rate constant for dopamine was found to be 3.5 x 105 cm(3) mol(-1) s(-1) at a concentration of 5.0 x 10(-5) mol L-1. When a Nafion (R) film is applied to the CoHCFe-modified electrode surface a high selectivity for the determination of dopamine over ascorbic acid was obtained. The analytical curve for dopamine presented linear dependence over the concentration range from 1.2 x 10(-5) to 5.0 x 10(-4) mol L-1 with a slope of 23.5 mA mol(-1) L and a linear correlation coefficient of 0.999. The detection limit of this method was 8.9 x 10(-6) mol L-1 and the relative standard deviation for five measurements of 2.5 x 10(-4) mol L-1 dopamine was 0.58%.en
dc.format.extent1950-1959
dc.language.isoeng
dc.publisherMolecular Diversity Preservation Int
dc.relation.ispartofSensors
dc.sourceWeb of Science
dc.subjectcobalt hexacyanoferrateen
dc.subjectchemically modified electrodeen
dc.subjectdopamineen
dc.subjectvoltammetryen
dc.subjectrotating disk electrodeen
dc.titleElectrooxidation and determination of dopamine using a Nafion (R)-cobalt hexacyanoferrate film modified electrodeen
dc.typeArtigo
dcterms.licensehttp://www.mdpi.com/about/openaccess
dcterms.rightsHolderMolecular Diversity Preservation Int
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade do Estado do Rio Grande do Norte (UERN)
dc.contributor.institutionUniv Loughborough
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.description.affiliationUNESP, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUERN, FANAT, Dept Quim, BR-59600010 Mossoro, RN, Brazil
dc.description.affiliationUniv Loughborough, Dept Chem, Loughborough LE11 3TU, Leics, England
dc.description.affiliationUSP, Fac Filosofia Ciencias & Letras Ribeirao Pret, Dept Quim, BR-14040901 Ribeirao Preto, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil
dc.identifier.doi10.3390/s8031950
dc.identifier.wosWOS:000254340700035
dc.rights.accessRightsAcesso aberto
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
dc.identifier.fileWOS000254340700035.pdf
dc.identifier.lattes0072173018005712
unesp.author.lattes0072173018005712
dc.relation.ispartofjcr2.475
dc.relation.ispartofsjr0,584
Localize o texto completo

Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record