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@article{1407742,
author = {Komendová, Martina and Metelka, Radovan and Urban, Jiří},
article_location = {WEINHEIM},
article_number = {7},
doi = {http://dx.doi.org/10.1002/elan.201700027},
keywords = {Capillary electrochemical detectors; Microelectrodes; Tetrode; Dopamine; Norepinephrine; Biamperometry},
language = {eng},
issn = {1040-0397},
journal = {Electroanalysis},
title = {Miniaturized Biamperometric Detectors for Electrochemical Detection in Flowing Streams},
url = {http://onlinelibrary.wiley.com/doi/10.1002/elan.201700027/abstract},
volume = {29},
year = {2017}
}
TY - JOUR
ID - 1407742
AU - Komendová, Martina - Metelka, Radovan - Urban, Jiří
PY - 2017
TI - Miniaturized Biamperometric Detectors for Electrochemical Detection in Flowing Streams
JF - Electroanalysis
VL - 29
IS - 7
SP - 1670-1673
EP - 1670-1673
PB - WILEY-VCH Verlag GmbH
SN - 10400397
KW - Capillary electrochemical detectors
KW - Microelectrodes
KW - Tetrode
KW - Dopamine
KW - Norepinephrine
KW - Biamperometry
UR - http://onlinelibrary.wiley.com/doi/10.1002/elan.201700027/abstract
L2 - http://onlinelibrary.wiley.com/doi/10.1002/elan.201700027/abstract
N2 - Capillary electrochemical detectors with various configurations of electrodes were developed by inserting platinum multielectrodes (tetrodes) or platinum and carbon microelectrodes into the ending of capillaries. The biamperometric mode of detection, without the need of classical reference electrode, was employed in flow injection analysis of dopamine and norepinephrine selected as model samples. The influences of geometric shape of tetrodes, arrangement of electrodes and internal diameter of the capillary were studied thoroughly with respect to intensity of recorded currents. A novel pulse biamperometric technique was employed with the aim to enhance further the recorded currents of dopamine oxidation and to minimize the passivation of electrodes in mixed aqueous-organic carrier solution, which improved considerably the repeatability of measurements. Proposed low-cost microelectrode devices showed good prospects as detectors in simple and miniaturized flow systems, such as flow injection analysis and capillary high-performance liquid chromatography with monolithic columns.
ER -
KOMENDOVÁ, Martina, Radovan METELKA a Jiří URBAN. Miniaturized Biamperometric Detectors for Electrochemical Detection in Flowing Streams. \textit{Electroanalysis}. WEINHEIM: WILEY-VCH Verlag GmbH, 2017, roč.~29, č.~7, s.~1670-1673. ISSN~1040-0397. Dostupné z: https://dx.doi.org/10.1002/elan.201700027.
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