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Journal of Electrochemical Science and Engineering, Vol. 8 No. 4, 2018.

Original scientific paper

https://doi.org/10.5599/jese.583

Analysis of sulfamethoxazole by square wave voltammetry using new carbon paste electrode

Izabel C. Eleotério ; Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USP, 14040-901, Ribeirão Preto, SP, Brazil
Marco A. Balbino ; Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USP, 14040-901, Ribeirão Preto, SP, Brazil
José F. de Andrade ; Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USP, 14040-901, Ribeirão Preto, SP, Brazil
Bruno Ferreira ; Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USP, 14040-901, Ribeirão Preto, SP, Brazil
Adelir A. Saczk ; Departamento de Química, Universidade Federal de Lavras, 37200–000, Lavras, MG, Brasil
Leonardo L. Okumura ; Departamento de Química, Universidade Federal de Viçosa, 36570–000, Viçosa, MG, Brasil
Antonio Carlos F. Batista ; Universidade Federal de Uberlândia - Campus do Pontal, 38304-402, Ituiutaba - MG, Brazil
Marcelo F. de Oliveira ; Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USP, 14040-901, Ribeirão Preto, SP, Brazil

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Abstract

In this work a new model of carbon paste electrode was employed to determine sulfamethoxazole (SMX), an antibiotic used to treat infections in human and veterinary medicine, by the square wave voltammetric modality (SWV). More specifically, the elec-trochemical behavior of SMX was investigated by cyclic voltammetry (CV), and the quantitative analysis of SMX was provided by SWV. The analytical curve was obtained with a linear correlation coefficient (r) of 0.985 and standard deviation (SD) of 0.005 μA. Limits of detection and quantification were found as 2.3×10-6 and 7.7×10-6 mol L-1, respectively. According to the obtained results, the new carbon paste prototype electrode can successfully be employed in this kind of electroanalytical applications.

Keywords

Carbon paste electrode; Electroanalysis of pharmaceutical compounds; electrochemical sensors; voltammetric analysis

Hrčak ID:

204433

URI

https://hrcak.srce.hr/204433

Publication date:

16.8.2018.

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