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@inproceedings{1110236, author = {Navrátil, Rudolf and Jelen, František and Trnková, Libuše}, address = {Brno}, booktitle = {XIII. Pracovní setkání fyzikálních chemiků a elektrochemiků, sborník}, keywords = {xanthine;methyl group;pencil graphite electrode (PeGE);copper ions;linear sweep voltammetry;LSV;adsorptive stripping voltammetry;elimination voltammetry;EVLS}, howpublished = {tištěná verze "print"}, language = {eng}, location = {Brno}, isbn = {978-80-7375-757-1}, pages = {175-176}, publisher = {Mendelova univerzita v Brně}, title = {THE EFFECT OF A METHYL GROUP ON THE OXIDATION OF XANTHINE ON A PENCIL GRAPHITE ELECTRODE}, year = {2013} }
TY - JOUR ID - 1110236 AU - Navrátil, Rudolf - Jelen, František - Trnková, Libuše PY - 2013 TI - THE EFFECT OF A METHYL GROUP ON THE OXIDATION OF XANTHINE ON A PENCIL GRAPHITE ELECTRODE PB - Mendelova univerzita v Brně CY - Brno SN - 9788073757571 KW - xanthine;methyl group;pencil graphite electrode (PeGE);copper ions;linear sweep voltammetry;LSV;adsorptive stripping voltammetry;elimination voltammetry;EVLS N2 - The aim of this paper was to study the effect of a methyl group on the oxidation of xanthine (Xan). For this purpose, we investigated the electrochemical behavior of 1-, 3-, 7- and 9-methyl derivatives of xanthine on a pencil graphite electrode (PeGE) in the presence and absence of copper (II) ions using Linear Sweep Voltammetry (LSV) in combination with adsorptive stripping and elimination techniques under several conditions (pH, scan rate). It was found that the position of the methyl group on a xanthine skeleton is responsible not only for changes of oxidation peak heights and peak potentials but also for the mechanism of the corresponding oxidation processes. Based on the methyl group position, the formation of Cu (I)-complex and the electroanalytical determination of methylxanthines (mXans) in a mixture is discussed. ER -
NAVRÁTIL, Rudolf, František JELEN a Libuše TRNKOVÁ. THE EFFECT OF A METHYL GROUP ON THE OXIDATION OF XANTHINE ON A PENCIL GRAPHITE ELECTRODE. In \textit{XIII. Pracovní setkání fyzikálních chemiků a elektrochemiků, sborník}. Brno: Mendelova univerzita v Brně, 2013, s.~175-176. ISBN~978-80-7375-757-1.
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