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Sensors 2006, 6(11), 1498-1512; doi:10.3390/s6111498

New Hydrodynamic Electrochemical Arrangement for Cadmium Ions Detection Using Thick-Film Chemical Sensor Electrodes

Department of Microelectronics, Brno University of Technology, Brno, Udolni 53, CZ-602 00 Brno, Czech Republic
Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno, Czech Republic
Department of Theoretical and Physical Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-611 37 Brno, Czech Republic
Author to whom correspondence should be addressed.
Received: 16 October 2006 / Accepted: 27 October 2006 / Published: 6 November 2006
(This article belongs to the Special Issue Sensors in Flow Analysis)
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Miniaturization and integration of chemical devices into modules that aredimensionally comparable with electronic chips (Lab on Chip) is nowadays developingworldwide. The aim of our work was to suggest and optimize the best conditions forfabrication of TFT sensor due to its sensitivity and low experimental deviations. Newelectrochemical analytical device was developed to ensure certain known mass transport toelectrodes, which is the most limiting process that influencing the response quality of thesensor. The device consists from rotating conic vessel for measured sample and stick-inthick-film sensor. The sensors responses were tested under trace analysis of cadmium.Measurements were done also with the others electrochemical arrangements to comparewith the new one. The sensor output current response dependence on the liquid velocity andgeometrical arrangement within using standard electrochemical couple of potassiumferrocyanide-ferricyanide is presented. We found out that the new device with controlledflow of electrolyte to sensor worked properly and gave satisfactory results. View Full-Text
Keywords: flow analysis; differential pulse voltammetry; cadmium; thick-film sensor. flow analysis; differential pulse voltammetry; cadmium; thick-film sensor.

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Prasek, J.; Adamek, M.; Hubalek, J.; Adam, V.; Trnkova, L.; Kizek, R. New Hydrodynamic Electrochemical Arrangement for Cadmium Ions Detection Using Thick-Film Chemical Sensor Electrodes. Sensors 2006, 6, 1498-1512.

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