Abstract
An electrocatalytic detection of ascorbic acid on a nitroso-R modified polypyrrole electrode has been studied. This functionalized polypyrrole film was electropolymerized by constant potential method on a platinum electrode from solution including pyrrole as monomer and nitroso-R as anionic dopant. Electrocatalytic currents of ascorbic acid were linearly dependent on its concentration in the range of 0.12–18.54 mM, with detection limit and relative standard deviation of 0.02 mM and 1.32%, respectively. This modified electrode can be used for determination of ascorbic acid in various pharmaceutical samples. Also, electrochemical behavior of this system was studied by various methods (RDE voltammetry, chronoamperometry, hydrodynamic amperometry and cyclic voltammetry).
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Published in Russian in Elektrokhimiya, 2010, Vol. 46, No. 8, pp. 962–970.
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Mohadesi, A., Taher, M.A., Baniasad, K. et al. A selective and sensitive film for electrocatalysis of ascorbic acid based on polypyrrole doped with nitroso-R(1-nitroso-2-naphthol-3,6-disulfonic acid disodium). Russ J Electrochem 46, 904–911 (2010). https://doi.org/10.1134/S1023193510080070
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DOI: https://doi.org/10.1134/S1023193510080070