Abstract

TKACH, Volodymyr V. et al. The theoretical evaluation of the use of trivalent vanadium oxyhydroxide in the electrochemical determination of nandrolone. Rev. colomb. cienc. quim. farm. [online]. 2018, vol.47, n.3, pp.400-409. ISSN 0034-7418.  https://doi.org/10.15446/rcciquifa.v47n3.77372.

An interesting case of the use of trivalent vanadium oxyhydroxide (VO(OH)) as an electrode modifier for nandrolone electrochemical determination has been described for the first time. It was shown that vanadium (III) oxyhydroxide may be an efficient electrode modifier for nandrolone determination, but, contrarily to the majority of the cases of the use of cobalt (III) oxyhydroxide, which is a relative compound, the process is cathodic and it is realized in moderately acid solutions, tending to neutral. The oscillatory behavior in the system is possible, due to the influence of the electrochemical reduction of tetravalent vanadium to trivalent in double electric layer.

Keywords : Chemically modified electrodes; nandrolone; vanadium (III) oxyhydro-xide; cathodic electrochemical reduction; stable steady-state.

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