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Journal of Electrochemical Science and Engineering, Vol. 12 No. 2, 2022.

Original scientific paper

https://doi.org/10.5599/jese.1100

Construction of new sensors with copper and cobalt complexes anchored on organofunctionalized silica and their use for electrocatalytic oxidation of reagents of biological interest

Marco Antonio Gonçalves Benetti ; Departamento de Química, Universidade Estadual de Maringá, Maringá, PR, Brazil
Denise Isadora Saores ; Departamento de Química, Universidade Estadual de Maringá, Maringá, PR, Brazil
Giovanna Gatti Alves ; Departamento de Química, Universidade Estadual de Maringá, Maringá, PR, Brazil
Eduardo Dias Andrade Pinto ; Departamento de Química, Universidade Estadual de Maringá, Maringá, PR, Brazil
Angelica Machi Lazarin orcid id orcid.org/0000-0002-8867-9788 ; Departamento de Química, Universidade Estadual de Maringá, Maringá, PR, Brazil

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Abstract

This work describes the development and application of chemically modified carbon paste electrode (CMCPE) with metal ion complexes of transition metals Co(II) and Cu(II) anchored on functionalized silica (SF). The prepared CMCPE was used for the determination of dopamine (DA) in the presence of pyridoxine (VB6) in commercially available pharmaceutical formulation, without any treatment of samples. The CMCPEs were built by incorporating graphite and functionalized silica and complexes of metal ions (Cu and Co) anchored by nitrogen groups on the silica surface. The electrochemical analysis was performed by cyclic voltammetry, while a drug analyzed in the present study was Revivan ampoules (DA determination).

Keywords

Chemically modified carbon electrode, functionalized silica, metal complexes, dopamine, tamin B6, cyclic voltammetry

Hrčak ID:

273959

URI

https://hrcak.srce.hr/273959

Publication date:

7.3.2022.

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