DETERMINATION OF METHYLXANTHINES ON PENCIL GRAPHITE ELECTRODES BY CYCLIC VOLTAMMETRY (CV

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Authors

MOTLOVÁ Dominika NAVRÁTIL Rudolf TRNKOVÁ Libuše

Year of publication 2014
Type Article in Proceedings
Conference Sborník příspěvků XIV. Pracovní setkání fyzikálních chemiků a elektrochemiků
MU Faculty or unit

Faculty of Science

Citation
Web Sborník příspěvků XIV. Pracovní setkání fyzikálních chemiků a elektrochemiků
Field Physical chemistry and theoretical chemistry
Keywords voltammetric determination; xanthine; xanthine derivatives; pencil graphite electrodes;elimination voltammetric procedure
Description This work deals with voltammetric determination of xanthine (Xan) and its methylated derivatives (1-, 3-, 7-, and 9-mXan) in the presence of copper ions, which form in situ complexes with corresponding xanthines and enable more sensitive detection of these substances by voltammetric methods on pencil graphite electrodes (PeGE). To enhance the sensitivity of detection we used the elimination voltammetric procedure (EVP), which is able to increase oxidation signals and to uncover the minor processes of the reaction.
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