Abstract
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, Eacc = –0.1 V, tacc = 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.
| Original language | English |
|---|---|
| Pages (from-to) | 1427-1431 |
| Number of pages | 5 |
| Journal | Inorganic Materials |
| Volume | 53 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 1 Dec 2017 |
Keywords
- azo dyes
- Carmoisine
- soft drinks
- spectrophotometry
- voltammetry
ASJC Scopus subject areas
- Chemical Engineering(all)
- Inorganic Chemistry
- Metals and Alloys
- Materials Chemistry