About: VOLTAMMETRIC ANALYSIS OF XANTHINE DERIVATIVES AT THE GRAPHITE ELECTRODE. EFFECT OF COPPER IONS

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Description	Voltammetric analysis of purine derivatives in the presence of copper ions has been performed earlier [e.g.1,2]. Here we present electrochemical oxidations of some methylxanthines and their complexes with copper on a pencil graphite electrode (PeGE) by means of linear sweep voltammetry (LSV) and elimination voltammetry with linear scan (EVLS) [3,4]. The analysis is based on the reaction of N-methyl derivatives of xanthine with cuprous ions which were generated electrochemically in situ (CuSO4 in 0.1M BR buffer, pH 5.1) at the accumulation potential Ea 0.15 V (vs. Ag/AgCl/3M KCl) for the accumulation time ta 120 s. A tentative mechanism for the formation of the copper-xanthine complex was suggested. Our results showed that carbon electrode in connection with EVLS can be an excellent prototype for cheap and fast working sensor for xanthine derivatives in the presence of copper. Voltammetric analysis of purine derivatives in the presence of copper ions has been performed earlier [e.g.1,2]. Here we present electrochemical oxidations of some methylxanthines and their complexes with copper on a pencil graphite electrode (PeGE) by means of linear sweep voltammetry (LSV) and elimination voltammetry with linear scan (EVLS) [3,4]. The analysis is based on the reaction of N-methyl derivatives of xanthine with cuprous ions which were generated electrochemically in situ (CuSO4 in 0.1M BR buffer, pH 5.1) at the accumulation potential Ea 0.15 V (vs. Ag/AgCl/3M KCl) for the accumulation time ta 120 s. A tentative mechanism for the formation of the copper-xanthine complex was suggested. Our results showed that carbon electrode in connection with EVLS can be an excellent prototype for cheap and fast working sensor for xanthine derivatives in the presence of copper. (en)
Title	VOLTAMMETRIC ANALYSIS OF XANTHINE DERIVATIVES AT THE GRAPHITE ELECTRODE. EFFECT OF COPPER IONS VOLTAMMETRIC ANALYSIS OF XANTHINE DERIVATIVES AT THE GRAPHITE ELECTRODE. EFFECT OF COPPER IONS (en)
skos:prefLabel	VOLTAMMETRIC ANALYSIS OF XANTHINE DERIVATIVES AT THE GRAPHITE ELECTRODE. EFFECT OF COPPER IONS VOLTAMMETRIC ANALYSIS OF XANTHINE DERIVATIVES AT THE GRAPHITE ELECTRODE. EFFECT OF COPPER IONS (en)
skos:notation	RIV/00216224:14310/11:00052424!RIV12-MSM-14310___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(LC06035), S
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Trnková, Libuše
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	239503
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/11:00052424
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	purine derivatives; copper; methylxanthines; PeGE; LSV; EVLS (en)
http://linked.open.../riv/klicoveSlovo	copper PeGE methylxanthines purine derivatives EVLS LSV
http://linked.open...ontrolniKodProRIV	[150492909F55]
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Biophysical Chemistry, Bioelectrochemistry and Bioanalysis. New Tools for Genomics, Proteomics and Biomedicine.
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Trnková, Libuše Jelen, František Kayran, Ugur Ozsoz, Mehmed
http://localhost/t...ganizacniJednotka	14310

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