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  • 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.
  • 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. (en)
Title
  • THE EFFECT OF A METHYL GROUP ON THE OXIDATION OF XANTHINE ON A PENCIL GRAPHITE ELECTRODE
  • THE EFFECT OF A METHYL GROUP ON THE OXIDATION OF XANTHINE ON A PENCIL GRAPHITE ELECTRODE (en)
skos:prefLabel
  • THE EFFECT OF A METHYL GROUP ON THE OXIDATION OF XANTHINE ON A PENCIL GRAPHITE ELECTRODE
  • THE EFFECT OF A METHYL GROUP ON THE OXIDATION OF XANTHINE ON A PENCIL GRAPHITE ELECTRODE (en)
skos:notation
  • RIV/00216224:14310/13:00068500!RIV14-MSM-14310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(LH13053), S
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
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  • 71335
http://linked.open...ai/riv/idVysledku
  • RIV/00216224:14310/13:00068500
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  • xanthine; methyl group; pencil graphite electrode (PeGE); copper ions; linear sweep voltammetry; LSV; adsorptive stripping voltammetry; elimination voltammetry; EVLS (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [2E291C772461]
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  • Brno
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  • Brno
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  • XIII. Pracovní setkání fyzikálních chemiků a elektrochemiků, sborník
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  • Trnková, Libuše
  • Jelen, František
  • Navrátil, Rudolf
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http://linked.open.../riv/zahajeniAkce
number of pages
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  • Mendelova zemědělská a lesnická univerzita v Brně
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  • 9788073757571
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  • 14310
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