Multi-responses Methodology Applied in the Electroanalytical Determination of Hair Dye by Using Printed Carbon Electrode Modified with Graphene

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dc.contributor.authorHudari, Felipe Fantinato [UNESP]
dc.contributor.authorCostaFerreira, Sergio Luis
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal da Bahia (UFBA)
dc.date.accessioned2018-12-11T17:26:37Z
dc.date.available2018-12-11T17:26:37Z
dc.date.issued2016-05-01
dc.description.abstractThis paper describes a rapid and sensitive method for determination of the hair dye Basic Blue 41 in wastewater samples using screen-printed carbon electrodes modified with graphene (SPCE/Gr). The method is based on the reversible reduction of azo groups of the dye at potential of -0.23V/-0.26V, where both the anodic and cathodic currents increased 1,300% when compared to screen-printed carbon (SPCE) and glassy carbon electrodes (GCE). The optimization of a square wave voltammetric method was performed by means of 23 factorial design, Doehlert matrix and multi-response assays, and the best parameters were: frequency (54.8Hz), step potential (6mV), pulse amplitude (43.7mV) and pH4.5. The analytical curve was constructed from 3.00×10-8 to 2.01×10-6molL-1, with detection and quantification limits of 5.00×10-9 and 1.70×10-8molL-1, respectively. The repeatability of the method evaluated for 10consecutive measurements at concentrations of 1.70×10-7molL-1 and 1.70×10-6molL-1, showed relative standard deviation of 3.56 and 0.57 %, respectively. The sensor based in SPCE/Gr was successfully applied in wastewater samples collected from a drinking water treatment plant and validated by comparison with HPLC-DAD method with good accuracy.en
dc.description.affiliationUNESP Universidade Estadual Paulista Júlio Mesquita Filho Instituto de Química de Araraquara Departamento de Química, Rua Francisco Degni, 55
dc.description.affiliationUniversidade Federal da Bahia Grupo de Pesquisa em Química e Quimiometria
dc.description.affiliationUnespUNESP Universidade Estadual Paulista Júlio Mesquita Filho Instituto de Química de Araraquara Departamento de Química, Rua Francisco Degni, 55
dc.format.extent1085-1092
dc.identifierhttp://dx.doi.org/10.1002/elan.201501043
dc.identifier.citationElectroanalysis, v. 28, n. 5, p. 1085-1092, 2016.
dc.identifier.doi10.1002/elan.201501043
dc.identifier.issn1521-4109
dc.identifier.issn1040-0397
dc.identifier.scopus2-s2.0-84952361259
dc.identifier.urihttp://hdl.handle.net/11449/177683
dc.language.isoeng
dc.relation.ispartofElectroanalysis
dc.relation.ispartofsjr0,692
dc.relation.ispartofsjr0,692
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBasic blue 41 dye
dc.subjectFactorial design
dc.subjectGraphene
dc.subjectScreen-printed carbon electrode
dc.subjectVoltammetric sensor for hair dye
dc.titleMulti-responses Methodology Applied in the Electroanalytical Determination of Hair Dye by Using Printed Carbon Electrode Modified with Grapheneen
dc.typeArtigo

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