alexa Stripping voltammetric and polarographic techniques for the determination of anti-fungal ketoconazole on the mercury electrode.


Bioenergetics: Open Access

Author(s): Arranz P, Arranz A, Moreda JM, Cid A, Arranz JF

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Abstract The electroanalytical behaviour of ketoconazole in Britton-Robinson buffer is described. The reduction process on the hanging mercury drop electrode (HMDE) gives rise to one peak over -1.6 V (vs. Ag/AgCl/sat.KCl), within the pH range studied (4.7-9.6). The results showed that the reduction of ketoconazole is irreversible and the limiting current is adsorption controlled. The dependence of the peak current on the concentration was studied by means of different polarographic and voltammetric techniques. Using adsorptive stripping differential pulse voltammetry (AdS-DPV), the detection limit (DL) reached was 5.3 x 10(-11) mol l(-1). Two procedures, based on differential pulse polarography (DPP) and AdS-DPV in aqueous medium were developed for the determination of ketoconazole in a gel formulation and spiked urine samples, respectively.
This article was published in J Pharm Biomed Anal and referenced in Bioenergetics: Open Access

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