Poly(Methyl Red) Modified Glassy Carbon Electrodes: Electrosynthesis, Characterization, and Sensor Behavior
| Autor: | Dilek Kul, Gökçe Öztürk |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010401 analytical chemistry
02 engineering and technology Britton-Robinson buffer Glassy carbon 021001 nanoscience & nanotechnology Electrochemistry Electrosynthesis 01 natural sciences 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound chemistry Electrode Methyl red Organic chemistry Differential pulse voltammetry Cyclic voltammetry 0210 nano-technology Nuclear chemistry |
| Zdroj: | Electroanalysis. 29:1721-1730 |
| ISSN: | 1040-0397 |
| Popis: | Poly(methyl red), PMR, was electropolymerized on glassy carbon electrodes by potential cycling in 50 mM phosphate buffer solution at pH 7.0 and 8.0 and Britton Robinson buffer solution in the pH range 7.0-11.0. The electrochemical behavior of PMR modified electrodes was investigated by cyclic voltammetry in Britton Robinson buffer solution at different pHs from 5.0 to 10.0 and found that the best PMR film formation was obtained at pH 9.0. Uric acid was quantitatively determined at PMR modified electrodes by cyclic voltammetry and differential pulse voltammetry in Britton Robinson buffer at pH 5.0. Both methods presented a linear dependence between the anodic peak current and the concentration of uric acid in the range of 0.4 to 60 μM and 0.08 to 100 μM with the limits of detection of 0.038 and 0.009 μM for cyclic voltammetry and differential pulse voltammetry, respectively. Poly(methyl red) as redox mediator allowed the determination of uric acid without any interferences from the substances in serum samples. |
| Databáze: | OpenAIRE |
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