Voltammetric determination of ascorbic acid in foodstuffs using modified carbon paste electrodes

Nováková, Marcela; Kalcher, Kurt; Schachl, Klemens; Komersová, Alena; Bartoš, Martin; Vytřas, Karel

Digitální knihovna UPCE
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Univerzita Pardubice
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Publikace vydané Univerzitou Pardubice / Published by the University of Pardubice
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Odborné časopisy / Journals
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Scientific papers of the University of Pardubice
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Series A, Faculty of Chemical Technology
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03 (1997) Scientific papers, Series A
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Voltammetric determination of ascorbic acid in foodstuffs using modified carbon paste electrodes

Nováková, Marcela; Kalcher, Kurt; Schachl, Klemens; Komersová, Alena; Bartoš, Martin; Vytřas, Karel

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URI: https://hdl.handle.net/10195/76826

Datum publikování: 1997

Typ dokumentu: Article

Zdrojový dokument: Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 3(1997)

ISSN: 1211-5541

Abstrakt:

Application of differential pulse cathodic stripping voltammetry for determination of ascorbic acid in foodstuffs have been investigated using a carbon paste electrode modified by cobalt(II) phthalocyanine, which was found to facilitate its oxidation and to decrease the necessary overvoltage. The method showed a good linearity up to 70 ppm of ascorbic acid with a detection limit of 0.8 ppm. When applied to analyse the real samples (fruit juices), the results agreed well with those obtained by traditional titrimetric determination.

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