Differential Pulse Voltammetric Determination of Nitrite with Gold Ultramicroelectrode

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dc.contributor.authorDa Silva, Sonia Maria [UNESP]
dc.contributor.authorMazo, Luiz Henrique
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2022-04-28T19:53:16Z
dc.date.available2022-04-28T19:53:16Z
dc.date.issued1998-01-01
dc.description.abstractThe application of disk shaped gold ullramicroelectrode for nitrite determination with and without addition of supporting electrolyte was studied using the differential pulse voltammetric method. The well-defined peak for nitrite oxidation near 0.8 V (vs. Ag/AgCl reference electrode) was used to obtain analytical plots in the concentration range from 0.1 to 0.6 mmol L-1 and from 10.0 to 50.0 μmol.L-1. The calculated detection limit was 0.65 μmol.L-1 in purified water, in the absence of supporting electrolyte, with relative standard deviation of 1.36% (n = 6) for analyzing 10.0μmol L-1 nitrite solutions, and accuracy of 100.9 %, based on recovery studies. The application of this analytical method to mineral and river water samples of natural pH also showed improved sensitivity when compared with the linear sweep voltammetric method previously reported.en
dc.description.affiliationDepartamento de Química Instituto de Biociências UNESP, Caixa Postal 510, CEP 18618-000, Botucatu, SP
dc.description.affiliationInst. de Quim. de São Carlos Universidade de São Paulo, Caixa Postal 780, CEP 13560-970, São Carlos, SP
dc.description.affiliationUnespDepartamento de Química Instituto de Biociências UNESP, Caixa Postal 510, CEP 18618-000, Botucatu, SP
dc.format.extent1200-1203
dc.identifierhttp://dx.doi.org/10.1002/(SICI)1521-4109(199811)10:17<1200
dc.identifier.citationElectroanalysis, v. 10, n. 17, p. 1200-1203, 1998.
dc.identifier.doi10.1002/(SICI)1521-4109(199811)10:17<1200
dc.identifier.issn1040-0397
dc.identifier.scopus2-s2.0-0000681780
dc.identifier.urihttp://hdl.handle.net/11449/223817
dc.language.isoeng
dc.relation.ispartofElectroanalysis
dc.sourceScopus
dc.subjectDifferential pulse voltammetry
dc.subjectNatural water
dc.subjectNitrite
dc.subjectUltramicroelectrodes
dc.titleDifferential Pulse Voltammetric Determination of Nitrite with Gold Ultramicroelectrodeen
dc.typeArtigo

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