Use of monovalent copper for sensitive detection of methyl derivatives of xanthine

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Authors	NAVRÁTIL Rudolf MOTLOVÁ Dominika JELEN František TRNKOVÁ Libuše
Year of publication	2014
Type	Article in Proceedings
Conference	XXXIV. Moderní Elektrochemické Metody
MU Faculty or unit	Faculty of Science
Citation
Field	Physical chemistry and theoretical chemistry
Keywords	Keywords Oxidation of methylxanthines; Copper complexes; Pencil graphite electrode (PeGE); Biosensing; Linear sweep voltammetry; Elimination voltammetric procedure (EVP).
Description	This work is concerned with the electroanalysis of xanthine (Xan) and its methylated derivatives (1-, 3-, 7-, and 9-mXan) on a pencil graphite electrode in the presence of copper ions. The main idea of using copper consists in the in situ formation of the complex Cu(I)-mXan on the electrode surface and improvement of oxidative signals of the corresponding mXan during the detection. Linear sweep voltammetry (LSV) in connection with adsorption stripping techniques was used for the determination of mXan. To enhance the oxidation signals the elimination voltammetric procedure (EVP) was applied.
Related projects:	CEITEC - Central European Institute of Technology Chemická a elektrochemická analýza purinových derivátů Vývoj metod a instrumentace pro analýzu biologicky významných látek 2014