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dc.contributor.authorBergamini, Marcio F.-
dc.contributor.authordos Santos, Daniela P.-
dc.contributor.authorZanoni, Maria Valnice Boldrin-
dc.identifier.citationSensors and Actuators B-chemical. Lausanne: Elsevier B.V. Sa, v. 123, n. 2, p. 902-908, 2007.-
dc.description.abstractScreen-printed carbon electrode (SPCE) modified with poly-L-histidine film can be successfully applied for chromium(VI) determination based on its pre-concentration. Optimum adherence and stability of the POIY-L-histidine film was obtained by direct addition of PH solution 1% (w/v) on the electrode surface, followed by heating at 80 degrees C during 5 min. Linear response range, sensitivity and limit of detection were 0. 1-150 [mu mol L-1, 4. 13 LA mu mol L` and 0.046 mu mol L-1. The repeatability of the proposed sensor, evaluated in terms of relative standard deviation, was measured as 3.2% for 10 experiments in 40 mu mol L-1 using the same electrode and 4.0% using screen-printed electrode as disposable sensor, respectively. The voltammetric sensor was applied to determination of Cr(VI) and indirect determination of Cr(III) in wastewater samples previously treated by a leather dyeing industry and the average recovery for these samples was around 97%. (C) 2006 Elsevier B.V. All rights reserved.en
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectstripping analysispt
dc.subjectscreen-printed modified electrodept
dc.titleDevelopment of a voltammetric sensor for chromium(VI) determination in wastewater sampleen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUNESP, Dept Quim Analit, Inst Quim, BR-14801970 Araraquara, Brazil-
dc.description.affiliationUnespUNESP, Dept Quim Analit, Inst Quim, BR-14801970 Araraquara, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofSensors and Actuators B: Chemical-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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