Determination of Copper in Wine by Anodic Stripping Voltammetry with Rotating Glassy Carbon and Microfiber Carbon Electrode

Anodic stripping voltammetry (ASV) with rotating glassy carbon electrode (RGCE) and microfiber carbon electrode (µFCE), both filmed with mercury, were used to determine copper content in wine. Influence of phenolics on in situ mercury film formation was studied. Wine and quercetin were added gradual...

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Published in:Croatica Chemica Acta 2017, Vol.90 (2), p.353
Main Authors: Sužnjević, Desanka Ž., Pastor, Ferenc T., Gorjanović, Stanislava Ž.
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Language:English
Subjects:
anodic stripping voltammetry
carbon microfiber electrode
copper
glassy carbon electrode
mercury film electrode
wine
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description Anodic stripping voltammetry (ASV) with rotating glassy carbon electrode (RGCE) and microfiber carbon electrode (µFCE), both filmed with mercury, were used to determine copper content in wine. Influence of phenolics on in situ mercury film formation was studied. Wine and quercetin were added gradually into solution of Hg(II) in acetic acid-sodium acetate buffer (pH = 4.60). Reduction of Hg(II) was observed in both cases. In situ filmed electrode was found unsuitable. Results obtained using ex situ filmed RGCE and µFCE were found in good agreement with ASV using hanging mercury drop electrode. Thus, ASV with ex situ mercury filmed electrodes can be recommended for accurate quantification of copper in complex samples containing phenolics, without any special pretreatments. This work is licensed under a Creative Commons Attribution 4.0 International License .
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subjects anodic stripping voltammetry
carbon microfiber electrode
copper
glassy carbon electrode
mercury film electrode
wine
title Determination of Copper in Wine by Anodic Stripping Voltammetry with Rotating Glassy Carbon and Microfiber Carbon Electrode
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