Voltammetric Determination of Carmoisine in Soft Drinks / O. I. Lipskikh [et al.]
Уровень набора: Inorganic MaterialsЯзык: английский.Резюме или реферат: A voltammetric study of the electrochemical behavior of red food azo dye Carmoisine on a glassy carbon electrode (GCE) is performed. The influence of various factors on the cathode signal of the dye is shown: pH and values of accumulation time and potential sweep rate. The operating conditions of Carmoisine identification in model media are selected: pH = 1.65, E acc = –0.1 V, t acc = 10 s, W = 100 mV/s. A linear dependence of the electrolytic reduction current of the dye on its concentration at –0.15 V is observed within 0.05–0.5 mg/L; detection limit of Carmoisine is 0.02 mg/L. A comparative determination of Carmoisine in soft drinks is performed by voltammetric and spectrophotometric methods..Примечания о наличии в документе библиографии/указателя: [References: p. 1431 (19 tit.)].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ | красители | вольтамперометрия | спектрофотометрия | безалкогольные напитки Ресурсы он-лайн:Щелкните здесь для доступа в онлайнTitle screen
[References: p. 1431 (19 tit.)]
A voltammetric study of the electrochemical behavior of red food azo dye Carmoisine on a glassy carbon electrode (GCE) is performed. The influence of various factors on the cathode signal of the dye is shown: pH and values of accumulation time and potential sweep rate. The operating conditions of Carmoisine identification in model media are selected: pH = 1.65, E acc = –0.1 V, t acc = 10 s, W = 100 mV/s. A linear dependence of the electrolytic reduction current of the dye on its concentration at –0.15 V is observed within 0.05–0.5 mg/L; detection limit of Carmoisine is 0.02 mg/L. A comparative determination of Carmoisine in soft drinks is performed by voltammetric and spectrophotometric methods.
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