par Lechien, A. 
;Valenta, Pavel;Nürnberg, Hans Wolfgang;Patriarche, Gaston
Référence Fresenius' Zeitschrift für Analytische Chemie, 311, 2, page (105-108)
Publication Publié, 1982-01
;Valenta, Pavel;Nürnberg, Hans Wolfgang;Patriarche, Gaston Référence Fresenius' Zeitschrift für Analytische Chemie, 311, 2, page (105-108)
Publication Publié, 1982-01
Article révisé par les pairs
| Résumé : | A new approach to the determination of ascorbic acid has been realized with differential pulse voltammetry (DPV) on the carbon paste electrode (CPE). The problems of the reproducibility of the surface of this electrode have been resolved by using always the same surface after its conditioning. The developed method has been applied to the direct determination of vitamin C in pharmaceutical tablets and in different types of fruit juices. Limits of determination are 1.5 ×10-7 M, 8×10-7 M and 1×10-5 M for tablets, dehydrated and liquid juices, respectively. © 1982 Springer-Verlag. |
