Application of the Potentiometric Stripping Analysis with Constant Current for the Determination of Lithium Ions Using a Spinel-Type Manganese (IV) Oxide-Modified Carbon Paste Electrode

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dc.contributor.authorTeixeira, Marcos F. S. [UNESP]
dc.contributor.authorBergamini, Marcio F.
dc.contributor.authorBocchi, Nerilso
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Paraná (UFPR)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T13:23:02Z
dc.date.available2014-05-20T13:23:02Z
dc.date.issued2010-04-01
dc.description.abstractA potentiometric stripping method for the measurement of lithium ions at a carbon paste electrode modified with spinel-type manganese oxide is described. The procedure is based on the effective pre-concentration of lithium ions on an electrode surface containing spinel-type MnO(2), with the reduction of Mn(IV) to Mn(III), and the consequent intercalation (insertion) of the lithium ions into the spinel structure. The best current constant stripping analysis (CCSA) response was reached for an electrode composition of 25% (m/m) spinel-type MnO(2) in the paste, 0.1 mol L(-1) TRIS buffer solution at pH 8.0, an accumulation potential of 0.3 V vs. the saturated calomel reference electrode (SCE), a pre-concentration time of 90 s and the application of a small positive constant current (10 A) during the stripping step. The obtained limit of detection was 2.0 x 10(-7) mol L(-1), and the relative standard deviation from five measurements of 2.5 x 10(-6) mol L(-1) lithium ions was 3.8%.en
dc.description.affiliationUniv Estadual Paulista, Fac Ciencias & Tecnol, Dept Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.affiliationUniversidade Federal do Paraná (UFPR), BR-80060000 Curitiba, Parana, Brazil
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Quim, BR-13560 São Carlos, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Ciencias & Tecnol, Dept Fis Quim & Biol, BR-19060900 Presidente Prudente, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCNPq: 474367/2004-5
dc.description.sponsorshipIdFAPESP: 05/01296-4
dc.format.extent161-165
dc.identifierhttp://dx.doi.org/10.2174/157341110790945463
dc.identifier.citationCurrent Analytical Chemistry. Sharjah: Bentham Science Publ Ltd, v. 6, n. 2, p. 161-165, 2010.
dc.identifier.doi10.2174/157341110790945463
dc.identifier.issn1573-4110
dc.identifier.urihttp://hdl.handle.net/11449/6867
dc.identifier.wosWOS:000275939600005
dc.language.isoeng
dc.publisherBentham Science Publ Ltd
dc.relation.ispartofCurrent Analytical Chemistry
dc.relation.ispartofjcr1.000
dc.relation.ispartofsjr0,274
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectLithium ionsen
dc.subjectSpinel-type manganese oxideen
dc.subjectPotentiometric stripping analysisen
dc.titleApplication of the Potentiometric Stripping Analysis with Constant Current for the Determination of Lithium Ions Using a Spinel-Type Manganese (IV) Oxide-Modified Carbon Paste Electrodeen
dc.typeArtigo
dcterms.licensehttp://www.benthamscience.com/permission.php
dcterms.rightsHolderBentham Science Publ Ltd
unesp.author.orcid0000-0002-9170-9925[3]
unesp.author.orcid0000-0001-9355-2143[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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