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Journal of the Mexican Chemical Society

Print version ISSN 1870-249X


SANTOS, Alexsandro Jhones dos et al. Use of Combined Electrochemical Approaches for Mineralization and Detection of Hydroquinone Using PbO2 Electrodes. J. Mex. Chem. Soc [online]. 2014, vol.58, n.3, pp.356-361. ISSN 1870-249X.

The electrochemical oxidation (EO) of hydroquinone (H2Q) has been performed, in acidic media, at PbO2 electrode by galvanostatic electrolysis applying 10 and 30 mAcm−2. The concentration of H2Q during its EO was also monitored by differential pulse voltammetry (DPV) by using PbO2 electrode. The experimental results of galvanostatic electrolyses showed that the performances of the process remarkably depend on the applied current density and in particular, the removal efficiencies obtained at PbO2 anode were 100% and 80%, at 30 and 10 mAcm−2, respectively. Additionally, the electroanalytical technique was efficiently used as a detection method during H2Q electrooxidation and when DPV analyses were compared with HPLC method, it achieved a good fit, confidence intervals and limits.

Keywords : hydroquinone; electrochemical oxidation; differential pulse voltammetry; electroanalysis.

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