A novel platform of using copper (II) complex with triazole-carboxilated modified as bidentated ligand SPCE for the detection of hydrogen peroxide in milk

Quezada, Victor; Martinez, Tamara; Nelson, Ronald; Perez-Fehrmann, Marcia; Zaragoza, Guillermo; Vizcarra, Arnoldo; Kesternich, Victor; Patricio Hernandez-Saravia, Lucas

Abstract

A screen-printed carbon electrode (SPCE) modified with copper (II) 1-(3-bromobenzyl)-5-methyl-1H-1,2,3-triazole-4-carboxylate [Cu(bmtc)(2)(H2O)] and was used as an electrochemical sensor of hydrogen peroxide. The material was characterised by crystal X-ray and cyclic voltammetry. The electrochemical behaviour of the modified electrode [Cu(bmtc)(2)(H2O)]/SPCE was evaluated against bare SPCE for the reduction of 1.0 mM H2O2 in phosphate buffer (pH = 7.0), where the modified electrode responded similar to -0.55 V even though the SPCE did not present response. On the other hand, analytical parameters such as reproducibility (2.7%), repeatability (2.6%), LOD (5.8 x 10(-7) mol L-1), selectivity (physiological substances) and stability were evaluated.

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Título según WOS: A novel platform of using copper (II) complex with triazole-carboxilated modified as bidentated ligand SPCE for the detection of hydrogen peroxide in milk
Título de la Revista: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volumen: 879
Editorial: ELSEVIER SCIENCE SA
Fecha de publicación: 2020
DOI:

10.1016/j.jelechem.2020.114763

Notas: ISI