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@article{1187087,
author = {Navrátil, Rudolf and Jelen, František and Kayran, Yasin Ugur and Trnková, Libuše},
article_location = {WEINHEIM},
article_number = {5},
doi = {http://dx.doi.org/10.1002/elan.201400017},
keywords = {Methylxanthines; Pencil graphite electrode; Elimination voltammetry; Copper-purine complexes},
language = {eng},
issn = {1040-0397},
journal = {Electroanalysis},
title = {A Pencil Graphite Electrode In Situ Modified by Monovalent Copper: a Promising Tool for the Determination of Methylxanthines},
url = {http://dx.doi.org/10.1002/elan.201400017},
volume = {26},
year = {2014}
}
TY - JOUR
ID - 1187087
AU - Navrátil, Rudolf - Jelen, František - Kayran, Yasin Ugur - Trnková, Libuše
PY - 2014
TI - A Pencil Graphite Electrode In Situ Modified by Monovalent Copper: a Promising Tool for the Determination of Methylxanthines
JF - Electroanalysis
VL - 26
IS - 5
SP - 952-961
EP - 952-961
PB - WILEY-VCH Verlag GmbH
SN - 10400397
KW - Methylxanthines
KW - Pencil graphite electrode
KW - Elimination voltammetry
KW - Copper-purine complexes
UR - http://dx.doi.org/10.1002/elan.201400017
L2 - http://dx.doi.org/10.1002/elan.201400017
N2 - A pencil graphite electrode (PeGE) exhibits a promising tool for the electrochemical analysis of xanthine (Xan) and its N-methyl derivatives (1-, 3-, 7- and 9-mXan). The changes in their level in blood, serum, urine, as products of purine catabolism, can indicate the development of some diseases. Sensitivity-enhanced voltammetric detection of mXans was achieved by forming of complex with Cu(I) and application of elimination procedure. The Cu(I)-mXan complex was identified by means of titration of electrochemically produced cuprous ions by mXan. Our approach enables separation of overlapped mXan oxidation signals. Based on the obtained results, we found that the effect of methyl group position on the xanthine skeleton was significant and it was also discussed.
ER -
NAVRÁTIL, Rudolf, František JELEN, Yasin Ugur KAYRAN a Libuše TRNKOVÁ. A Pencil Graphite Electrode In Situ Modified by Monovalent Copper: a Promising Tool for the Determination of Methylxanthines. \textit{Electroanalysis}. WEINHEIM: WILEY-VCH Verlag GmbH, 2014, roč.~26, č.~5, s.~952-961. ISSN~1040-0397. Dostupné z: https://dx.doi.org/10.1002/elan.201400017.
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