Graphite-araldite® composite electrode: didactic applications - part II

Author(s)

Carolina Maria Fioramonti Calixto ^[1] ; Sidney Xavier dos Santos ^[2] ; Éder Tadeu Gomes Cavalheiro ^[3]

Affiliation

^[1] Universidade de São Paulo. Instituto de Química de São Carlos. Departamento de Química e Física Molecular - Brasil

^[2] Universidade de São Paulo. Instituto de Química de São Carlos. Departamento de Química e Física Molecular - Brasil

^[3] Universidade de São Paulo. Instituto de Química de São Carlos. Departamento de Química e Física Molecular - Brasil

• Document type: Journal article
• Source: Química Nova; v. 37, n. 2, p. 367-372, 2014-04-00.

Abstract

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. (AU)

• FAPESP's process: 11/02705-6 - Development and application of "biosensors enzymeless" by modification of composite electrodes based on graphite-polyurethane with metal complexes of Schiff bases
• Grantee: Sidney Xavier dos Santos
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 10/11080-7 - Preparation and application of grafite-polimer based composite electrodes : modification with organofunctionalized silicas and molecurlay imprinted polymers
• Grantee: Éder Tadeu Gomes Cavalheiro
• Support Opportunities: Regular Research Grants