Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 879, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2020.114763
Keywords
[cu(bmtc)2(H2O)]; Hydrogen peroxide; Milk; Amperometry; Electrochemical sensor
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Funding
- European Union Project ChemBioFight [269301]
- FONDECYT, Chile [3190118]
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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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