Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12313/931
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dc.contributor.authorPenagos Llanos, Johisner-
dc.contributor.authorCalderón, Jorge A.-
dc.contributor.authorNagles, Edgar-
dc.contributor.authorHurtado, Jhon J.-
dc.date.accessioned2019-05-23T14:37:36Z-
dc.date.available2019-05-23T14:37:36Z-
dc.date.issued2019-01-15-
dc.identifier.citationPenagos-Llanos, J., Calderón, J. A., Nagles, E., & Hurtado, J. J. (2019). Voltammetric determination of thiomersal with a new modified electrode based on a carbon paste electrode decorated with La2O3. Journal of Electroanalytical Chemistry, 833, 536-542.es_CO
dc.identifier.issn1572-6657-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1572665718308506?via%3Dihub-
dc.description.abstractA carbon-paste modified electrode decorated with La2O3 (LaOx/CPE) is reported for the first time for the voltammetric determination of thiomersal (THM) content. The LaOx/CPE surface was characterized using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). The presence of La2O3 on the surface of the carbon paste reduces the charge transfer resistance and improves the sensitivity toward the oxidation of THM, with an oxidation current increase of almost 60% and allows its determination by square-wave stripping voltammetry (SWSV). The detection limit (3σ/b) was 0.09 μmol L−1 and the relative standard deviation was 2.5% (n = 7) with three different electrodes. Furthermore, the new sensor was applied in the detection of THM in vaccines and pharmaceutical dosages.es_CO
dc.language.isoenes_CO
dc.publisherJournal of Electroanalytical Chemistryes_CO
dc.subjectLanthanum (III) oxidees_CO
dc.subjectCarbon pastees_CO
dc.subjectThiomersales_CO
dc.subjectVaccineses_CO
dc.subjectSquare wave stripping voltammetryes_CO
dc.titleVoltammetric determination of thiomersal with a new modified electrode based on a carbon paste electrode decorated with La2O3es_CO
dc.typeArticlees_CO
eperson.emailjohisner.penagos@unibague.edu.coes_CO
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