Open AccessAnalysis of sulfamethoxazole by square wave voltammetry using new carbon paste electrode
Author(s) -
Izabel Cristina Eleotério,
Marco Aantonio Balbino,
José Fernando de Andrade,
Bruno Leonardo Macedo Ferreira,
Adelir Aparecida Saczk,
Leonardo Luiz Okumura,
Alexandre Batista,
Marcelo Firmino de Oliveira
Publication year - 2018
Publication title -
journal of electrochemical science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.236
H-Index - 6
ISSN - 1847-9286
DOI - 10.5599/jese.509
Subject(s) - span (engineering) , electrode , analytical chemistry (journal) , detection limit , voltammetry , square wave , chemistry , cyclic voltammetry , nuclear chemistry , mathematics , chromatography , physics , electrochemistry , voltage , civil engineering , engineering , quantum mechanics
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 electrochemical 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.