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Revista Colombiana de Ciencias Químico - Farmacéuticas

Print version ISSN 0034-7418


TKACH, Volodymyr V. et al. Theoretical evaluation of the work of the electrode, modified by cobalt (III) oxyhydroxide, in the uric acid detection. Rev. colomb. cienc. quim. farm. [online]. 2018, vol.47, n.2, pp.289-300. ISSN 0034-7418.

The possibility of use of cobalt oxyhydroxide as an electrode modifier in the uric acid determination has been investigated from the theoretical point of view. The mechanism of the use of the inorganic compound in the process has been suggested, and the model, correspondent to the process, has been analyzed by means of linear stability theory and bifurcation analysis. It has been concluded that the cobalt oxyhydroxide may serve as an efficient modifier, making easier the analyte oxidation in neutral media in galvanostatic mode. The monotonic instability for this case isn't capable to realize, and the oscillatory behavior is caused by the unique factor.

Keywords : Uric acid; electrochemical sensors; chemically modified electrodes; cobalt (III) oxyhydroxide; stable steady-state.

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