Eletrodo compósito à base de grafite-Araldite®: aplicações didáticas - parte II

This work proposes the use of a graphite-Araldite® 70% (graphite, m/m) composite electrode in didactic experiments, specifically in the quantitative determination of the neurotransmitter dopamine (DA) in a sample of pharmaceutical formulation. The goal is to demonstrate the possibility of using volt...

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Bibliographic Details
Published in:Química Nova 2014-04, Vol.37 (2), p.367-372
Main Authors: Carolina Maria Fioramonti Calixto, Sidney Xavier dos Santos, Éder Tadeu Gomes Cavalheiro
Format: Article
Language:English
Subjects:
composite electrode
dopamine
graphite-epoxy composites
Online Access:Get full text
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Summary:This work proposes the use of a graphite-Araldite® 70% (graphite, m/m) composite electrode in didactic experiments, specifically in the quantitative determination of the neurotransmitter dopamine (DA) in a sample of pharmaceutical formulation. The goal is to demonstrate the possibility of using voltammetric techniques in quality control of medicines, besides covering some concepts such as the influence of pH on the redox process, the differential pulse voltammetry (DPV) technique, the optimization of experiments and comparison with an official method described in the United States Pharmacopoeia.
ISSN:1678-7064
DOI:10.5935/0100-4042.20140061