Voltammetric Determina tion of Carmoisine in Soft Drinks
Abstract
Voltmammetry is used to study electrochemical behavior of Carmoisine (synthetic red food dye from azo dye group) on a glassy carbon electrode. Different factors affect the cathode signal of the dye: pH, potential and accumulation time, and the sweep rate of the potential. We specified working conditions for Carmoisine determination in model solutions: pH = 1.65, Eacc = -0.1V, tacc =10 sec, W =100mV/sec. Linear dependence of Carmoisine electroreduction current on the dye concentration at a potential value of 0.15 V is observed in the range of 0.05 - 0.5 mg/liter. Carmoisine detection limit is 0.02 mg/liter. Results of comparative determination of carmoisine in soft drinks using voltammetric and spectrophotometric techniques are presented.
About the Authors
O. I. Lipskikh
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
E. I. Korotkova
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
E. V. Dorozhko
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
K. V. Derina
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
O. A. Voronova
Национальный исследовательский Томский политехнический университет
Russian Federation
Russian Federation
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Review
For citations:
Lipskikh O.I., Korotkova E.I., Dorozhko E.V., Derina K.V., Voronova O.A. Voltammetric Determina tion of Carmoisine in Soft Drinks. Industrial laboratory. Diagnostics of materials. 2016;82(6):22-26. (In Russ.)
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