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https://doi.org/10.5562/cca3178

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

Desanka Ž. Sužnjević ; Institute of General and Physical Chemistry, P.O. Box 45, 11158 Belgrade 118, Serbia
Ferenc T. Pastor ; Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11001 Belgrade, Serbia
Stanislava Ž. Gorjanović ; Institute of General and Physical Chemistry, P.O. Box 45, 11158 Belgrade 118, Serbia


Puni tekst: engleski pdf 11.586 Kb

str. 353-357

preuzimanja: 813

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Sažetak

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.

Ključne riječi

anodic stripping voltammetry, glassy carbon electrode, carbon microfiber electrode, mercury film electrode, wine, copper

Hrčak ID:

187855

URI

https://hrcak.srce.hr/187855

Posjeta: 1.096 *