Determination of Rutin in Green Tea Infusions Using Square-Wave Voltammetry with a Rigid Carbon-Polyurethane Composite Electrode

Determination of Rutin in Green Tea Infusions Using Square-Wave Voltammetry with a Rigid Carbon-Polyurethane Composite Electrode

This paper presents a comparative study on the electrochemical behavior of the flavonoid rutin on a rigid carbon‐polyurethane composite electrode and on a glassy carbon electrode. The electrochemical oxidation reaction of rutin was found to be quasireversible and affected by adsorption on the electr...

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Veröffentlicht in:Electroanalysis (New York, N.Y.) N.Y.), 2006-05, Vol.18 (10), p.1028-1034
Hauptverfasser: Malagutti, Andréa R., Zuin, Vânia G., Cavalheiro, Éder T. G., Mazo, Luiz H.
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Sprache:eng
Schlagworte:
Composite electrode
Flavonoid
Polyurethane
Rutin
Square-wave voltammetry
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container_issue 10
container_start_page 1028
container_title Electroanalysis (New York, N.Y.)
container_volume 18
creator Malagutti, Andréa R.
Zuin, Vânia G.
Cavalheiro, Éder T. G.
Mazo, Luiz H.
description This paper presents a comparative study on the electrochemical behavior of the flavonoid rutin on a rigid carbon‐polyurethane composite electrode and on a glassy carbon electrode. The electrochemical oxidation reaction of rutin was found to be quasireversible and affected by adsorption on the electrode surface. A square‐wave voltammetric method was developed for determination of rutin in green tea infusion samples using the RCPE electrode and data treatment by a deconvolution procedure. The detection limit achieved in buffered solutions was 7.1×10−9 mol L−1 using the RCPE and 1.7×10−8 mol L−1 using the GC electrode the average reproducibility for five determinations being 3.5%.
doi_str_mv 10.1002/elan.200603496
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subjects Composite electrode
Flavonoid
Polyurethane
Rutin
Square-wave voltammetry
title Determination of Rutin in Green Tea Infusions Using Square-Wave Voltammetry with a Rigid Carbon-Polyurethane Composite Electrode
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