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Revista de Chimie (Rev. Chim.), Year 2012, Volume 63, Issue 6,





Elena DIACU, Eleonora-Mihaela UNGUREANU, Maria Madalina jurcovan, Cornelia Petronela ENE, Alexandru Anton IVANOV
Voltammetric Studies for Detection and Degradation Assessment of some Synthetic Food Dyestuffs. II. Sunset Yellow - E-110

Abstract:

The electrochemical behaviour of the synthetic food dyestuff Sunset Yellow-E 110 is discussed in comparison with our Tartrazine previous data. Voltammetric experiments obtained by cyclic voltammetry and differential pulse voltammetry were performed on glassy carbon electrode in buffered aqueous solutions at different pH values. The influence of SUN concentration, scan rate and pH, on the currents and peak potentials have been studied. The electrode processes are controlled by diffusion. Both applied voltammetric methods showed a good matching of the electrochemical parameters, and any of this simple, high-performance, and inexpensive methods can be recommended for the determination of trace SUN levels in commercial soft drinks. In the same time, an assessment of SUN degradation process can be achieved by the interpretation the voltammetric data. Keywords: Sunset Yellow, Tartrazine, voltammetry, food dyestuff


Issue: 2012, Volume 63, Issue 6
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