Mixed-valence oxides of ruthenium (RuO x ) and iridium (IrO x ) and a composite based on them (IrO x —RuO x ) exhibited catalytic activity for allopurinol oxidation when electrodeposited on the surfaces of unmodified glassy-carbon electrodes and those modified with functionalized single-walled carbon nanotubes (SWCNT). The greatest catalytic effect was observed on the electrode modified with composite IrO x —RuO x —SWCNT. A flow-injection method for amperometric detection of allopurinol at the modified electrode was developed. The analytical signal was linearly dependent on allopurinol concentration in the range 1 × 10– 6 – 5 ×10−3 M.
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The work was supported financially by the Russian Foundation for Basic Research (Grant No. 12-03-97031-r povolzh’e a).
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Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 48, No. 8, pp. 36 – 41, August, 2014.
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Shaidarova, L.G., Chelnokova, I.A., Makhmutova, G.F. et al. Amperometric Detection of Allopurinol in Flow-Injection Analysis on Electrodes Modified by Carbon Nanotubes and Mixed-Valence Ruthenium and Iridium Oxides. Pharm Chem J 48, 537–542 (2014). https://doi.org/10.1007/s11094-014-1146-z
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DOI: https://doi.org/10.1007/s11094-014-1146-z