Electrooxidación de glifosato sobre electrodos de níquel y cobre

AUTOR(ES)

Sierra, Edgar Virgilio, Méndez, Manuel Alejandro, Sarria, Víctor Manuel, Cortés, María Teresa

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2008

RESUMO

The electrochemical oxidation of glyphosate on an electrode of nickel and on one of copper was studied. With both electrodes electrochemical signals related to the glyphosate concentration were observed. However, the behaviour of the copper electrode was much better than that of the nickel electrode. A calibration curve was obtained of the electrical signal of this electrode as a function of the glyphosate concentration. The detection limit was 30 µM. In the case of nickel, an increase in the oxidation signal, which is related to the glyphosate concentration, was obtained. However, the results were less reproducible and additional information is necessary to propose an interaction mechanism between glyphosate and the electrode.

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