
The inorganic films of ruthenium(III) hexacyanocobaltate(III) and ruthenium(III) hexacyanoruthenate(II) electrodeposited on the surface of glassy carbon electrodes show electrocatalytic activity during guanine oxidation. In comparison with an unmodified electrode, the decrease in the oxidation potential by 210 mV and the multiple increase in the current of the organic compound oxidation take place. The conditions for the production of the polymeric inorganic film on the glassy carbon electrode and for the registration of the maximum catalytic current on this electrode are defined. The linear dependence of the electrocatalytic response of the modified electrode on the guanine concentration is observed in the range from 1·10 –6 to 1·10 –3 mol× l –1.
Неорганическая пленка из гексацианокобальтата(III) и гексацианорутената(II) рутения(III) на поверхности стеклоуглерода проявляет электрокаталитическую активность при окислении гуанина. По сравнению с немодифицированным электродом фиксируется уменьшение потенциала окисления на 210 мВ и многократное увеличение тока окисления органического соединения. Найдены условия получения полимерной неорганической пленки на поверхности стеклоуглерода и регистрации максимального каталитического тока на этом электроде. Линейная зависимость величины тока от концентрации гуанина наблюдается в интервале от 1·10 –6 до 1·10 –3 моль/л.
ХИМИЧЕСКИ МОДИФИЦИРОВАННЫЕ ЭЛЕКТРОДЫ, ГЕКСАЦИАНОМЕТАЛЛАТЫ, ВОЛЬТАМПЕРОМЕТРИЧЕСКОЕ ОПРЕДЕЛЕНИЕ ГУАНИНА
ХИМИЧЕСКИ МОДИФИЦИРОВАННЫЕ ЭЛЕКТРОДЫ, ГЕКСАЦИАНОМЕТАЛЛАТЫ, ВОЛЬТАМПЕРОМЕТРИЧЕСКОЕ ОПРЕДЕЛЕНИЕ ГУАНИНА
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