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Вольтамперометрическое определение цистеина на электроде, модифицированном пленкой политетрасульфофталоцианина никеля(II)

Вольтамперометрическое определение цистеина на электроде, модифицированном пленкой политетрасульфофталоцианина никеля(II)

Abstract

It was established that a polymeric film deposited on a glassy carbon electrode from nickel(II) tetrasulfonated phthalocyanine solution shows electrocatalytic activity during oxidation of cysteine. A decrease in its oxidation potential and a multiple increase in the oxidation current were observed compared to the unmodified electrode. The conditions for the polymeric film preparation on the surface of glassy carbon electrode and the recording of the maximal catalytic current on this electrode were determined. The linear dependence of current value on cysteine concentration was observed up to 1·10-6 and 1·10-7 mol/l under static and flow conditions.

Установлено, что полимерная пленка, осажденная на поверхности стеклоуглеродного электрода из раствора тетрасульфофталоцианина никеля(II), проявляет электрокаталитическую активность при окислении цистеина. По сравнению с немодифицированным электродом наблюдается уменьшение потенциала окисления и многократное увеличение тока окисления органического соединения. Найдены рабочие условия получения полимерной пленки на поверхности стеклоуглерода и регистрации максимального каталитического тока на этом электроде. Линейная зависимость величины тока от концентрации цистеина наблюдается до 1·10-6 и до 1·10-7моль⋅л-1 в стационарных и проточных условиях.

Keywords

ХИМИЧЕСКИ МОДИФИЦИРОВАННЫЕ ЭЛЕКТРОДЫ, ПОЛИМЕРНАЯ ПЛЕНКА, ТЕТРАСУЛЬФОФТАЛОЦИАНИН НИКЕЛЯ(II), ЭЛЕКТРОКАТАЛИЗ, ЭЛЕКТРООКИСЛЕНИЕ ЦИСТЕИНА, NICKEL(II) TETRASULPHOPHTHALOCYANINE

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold