电沉积金铋二元体系电极伏安法测定苯肾上腺素、扑热息痛和咖啡因

L. G. Shaidarova, I. Chelnokova, D. Koryakovtseva, H. Budnikov
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引用次数: 0

摘要

电沉积在玻璃碳电极表面的Au-Bi二元体系在苯肾上腺素、对乙酰氨基酚和咖啡因的电氧化过程中表现出催化活性,增强了有机化合物氧化过程中的峰值电流,降低了过电压。在修饰电极上,苯肾上腺素和对乙酰氨基酚的氧化峰电位差分别为400 mV和300 mV。建立了在Au-Bi二元修饰的玻碳电极上同时测定苯肾上腺素、扑热息痛和咖啡因的可能性。在5·10-6 ~ 5·10-3 m的浓度范围内,校准曲线呈线性关系。
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Electrode with the Electrodeposited Gold–Bismuth Binary System for Voltammetric Determination of Phenylephrine, Paracetamol, and Caffeine
The Au–Bi binary system electrodeposited on the surface of a glassy carbon electrode exhibits catalytic activity during the electrooxidation of phenylephrine, paracetamol, and caffeine that enhances the peak currents and decreases overvoltage in the oxidation of organic compounds. The potential difference between the peaks of oxidation on the modified electrode is 400 mV for phenylephrine and paracetamol and 300 mV for phenylephrine and caffeine, respectively. The possibility of simultaneous voltammetric determination of phenylephrine, paracetamol, and caffeine on the glassy carbon electrode modified by the Au–Bi binary system was established. The calibration curve is linear in the concentration range from 5·10–6 to 5·10–3 M. The developed method was tested in the analysis of combined drugs.
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