A Sensitive Electrochemical Microsensor Based on Adsorptive Stripping and Elimination Voltammetric Techniques

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Authors

TRNKOVÁ Libuše JELEN Frantisek HASON Stanislav ADAM Vojtech KIZEK Rene

Year of publication 2010
Type Article in Proceedings
Conference 2010 IEEE SENSORS
MU Faculty or unit

Faculty of Science

Citation
Web https://ieeexplore.ieee.org/document/5690863
Doi http://dx.doi.org/10.1109/ICSENS.2010.5690863
Keywords GLASSY-CARBON ELECTRODE; GRAPHITE ELECTRODE; PURINE-BASES; OXIDATION; DNA; COPPER; AMINOPURINES; THEOPHYLLINE; NUCLEOSIDES; XANTHINE
Description An innovative electrochemical sensor based on a combination of the elimination voltammetry and adsorptive stripping (AdS) techniques with a slightly soluble complex is presented. The test of our approach was aimed at analysis of aminopurines and oxopurines on carbon paste (CPE) and pencil graphite electrodes (PeGE). The voltammetric signals of purine derivatives are amplified: (i) by increasing the surface concentration of the analyte due to the adsorption of a slightly soluble metal complex (e.g., in the case of purine derivatives it is the complex with monovalent copper), (ii) by stripping the complex from an electrode surface, and (iii) by signal processing with the elimination voltammetry with linear scan (EVLS). Both electrochemical techniques are developed for individual microsensors or for microarrays.
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