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- Title
ELECTROCHEMICAL STUDY OF ISOPRENALINE AND EPINEPHRINE AT PLATINUM-NANOPARTICLES-CHITOSAN MODIFIED GRAPHITE ELECTRODE.
- Authors
FORT, IOANA; SILAI, ILEANA ELISABETA; CASONI, DORINA; TURDEAN, GRAZIELLA L.
- Abstract
Two catecholamines (epinephrine and isoprenaline) were studied by cyclic (CV) and square-wave voltammetry (SWV) at bare graphite (G) and Pt nanoparticles (Pt-NP) - chitosan modified graphite electrodes (G/Pt-NPChitosan). The obtained results shown similarly redox behavior for both investigated compounds by mentioned electrochemical techniques at the investigated electrodes, consisting in two pairs of peaks (peak I and II) corresponding to a quasi-reversible processes. The difference between the structures of compounds doesn't influence the electrochemical parameters values. As expected, the presence of the Pt nanoparticles acts as a diffusion barrier on the electrode surface leading to a decrease of the current intensities values, when electrodes were investigated by CV and SWV. The G/Pt-NPChitosan nanocomposites matrix can be satisfactorily used for detecting catecholamines.
- Publication
Studia Universitatis Babes-Bolyai, Chemia, 2013, Vol 58, Issue 4, p193
- ISSN
1224-7154
- Publication type
Academic Journal