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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/67926
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dc.contributor.authorTeixeira, Marcos F. S.-
dc.contributor.authorMarcolino-Júnior, Luiz H.-
dc.contributor.authorFatibello-Filho, Orlando-
dc.contributor.authorDockal, Edward R.-
dc.contributor.authorCavalheiro, Éder T. G.-
dc.date.accessioned2014-05-27T11:21:10Z-
dc.date.accessioned2016-10-25T18:20:00Z-
dc.date.available2014-05-27T11:21:10Z-
dc.date.available2016-10-25T18:20:00Z-
dc.date.issued2004-11-01-
dc.identifierhttp://dx.doi.org/10.1590/S0103-50532004000600003-
dc.identifier.citationJournal of the Brazilian Chemical Society, v. 15, n. 6, p. 803-808, 2004.-
dc.identifier.issn0103-5053-
dc.identifier.urihttp://hdl.handle.net/11449/67926-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/67926-
dc.description.abstractThe preparation and electrochemical characterization of a carbon paste electrode modified with N.N′-ethylenebis(salicylideneiminato) oxovanadium(IV) complex ([VO(Salen)]) as well as its behavior as electrocatalyst toward the oxidation of dipyrone were investigated. The electrochemical behavior of the modified electrode and the electrooxidation of dipyrone were explored using cyclic voltammetry. The voltammetric response of the modified electrode is based on two reactions. One electrochemical related to the oxidation of the metallic center of the [VO(Salen)] and the other involving the chemical redox process involving the oxidized form of the complex and the reduced form of dipyrone. The best voltammetric response was observed for a paste composition of 25% (m/m) [VO(Salen)], KCl solution pH from 5.5 to 8.0 as the electrolyte and potential scan rate of 10 mV s-1 in the presence of dipyrone. A linear voltammetric response for dipyrone was obtained in the concentration range from 9.9 × 106 to 2.8 × 10 -3 mol L-1, with a detection limit of 7.2 × 10 -6 mol L-1. Among of several compounds tested as potential interference, only ascorbic acid presented some interference. The proposed electrode is useful for the quality control and routine analysis of dipyrone in pharmaceutical formulations.en
dc.format.extent803-808-
dc.language.isoeng-
dc.sourceScopus-
dc.subjectDipyrone-
dc.subjectModified electrode-
dc.subjectN,N′-ethylenebis(salicylideneiminato)oxovanadium(IV)-
dc.subjectPharmaceutical formulations-
dc.subjectVoltammetric determination-
dc.subjectascorbic acid-
dc.subjectcarbon-
dc.subjectdipyrone-
dc.subjectelectrolyte-
dc.subjectn,n' ethylenebis(salicylideneaminato)oxovanadium-
dc.subjectpotassium chloride-
dc.subjectunclassified drug-
dc.subjectvanadium derivative-
dc.subjectacidity-
dc.subjectalkalinity-
dc.subjectchemical composition-
dc.subjectcomplex formation-
dc.subjectconcentration process-
dc.subjectcyclic potentiometry-
dc.subjectelectrochemistry-
dc.subjectelectrode-
dc.subjectlinear system-
dc.subjectoxidation-
dc.subjectoxidation kinetics-
dc.subjectoxidation reduction reaction-
dc.subjectpaste-
dc.subjectpharmaceutical engineering-
dc.titleVoltammetric determination of dipyrone using a N,N′- ethylenebis(salicylideneaminato)oxovanadium(IV) modified carbon-paste electrodeen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)-
dc.contributor.institutionUniversidade de São Paulo (USP)-
dc.description.affiliationUniversidade Estadual Paulista Campus do Litoral Paulista Unidade São Vicente, Praca Infante D. Henrique s/no, 11330-900 São Vicente - SP-
dc.description.affiliationDepartamento de Química Univ. Federal de São Carlos, Rod. Washington Luiz, Km 235, 13565-905 São Carlos - SP-
dc.description.affiliationInst. de Quim. de São Carlos Universidade de São Paulo, Av. Trabalhador Sao-carlense, 400, 13560-970 São Carlos - SP-
dc.description.affiliationUnespUniversidade Estadual Paulista Campus do Litoral Paulista Unidade São Vicente, Praca Infante D. Henrique s/no, 11330-900 São Vicente - SP-
dc.identifier.doi10.1590/S0103-50532004000600003-
dc.identifier.scieloS0103-50532004000600003-
dc.identifier.wosWOS:000226205000003-
dc.rights.accessRightsAcesso aberto-
dc.identifier.file2-s2.0-12744281792.pdf-
dc.relation.ispartofJournal of the Brazilian Chemical Society-
dc.identifier.scopus2-s2.0-12744281792-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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