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首页> 外文期刊>International Journal of Electrochemical Science >Investigation of Carbon Allotropes for Simultaneous Determination of Ascorbic Acid, Epinephrine, Uric Acid, Nitrite and Xanthine
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Investigation of Carbon Allotropes for Simultaneous Determination of Ascorbic Acid, Epinephrine, Uric Acid, Nitrite and Xanthine

机译：碳同素异形体同时测定抗坏血酸，肾上腺素，尿酸，亚硝酸盐和黄嘌呤的研究

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摘要

In this study, modified glassy carbon electrode (GCE) with different carbon allotropes such as multiwall carbon nanotubes (MWCNTs), graphene, bucky ball and graphite have been used for the - simultaneous determination of ascorbic acid (AA), epinephrine (EP), uric acid (UA), Nitrite (NO2 ), and xanthine (XN). Different electrochemical methods such as cyclic voltammetry, differential pulse voltammetry and chronoamperometry methods were employed to study the behavior of AA, EP, UA, - NO2 and XN on these proposed modified electrodes. The modified GCE with MWCNTs was - successfully used for simultaneous determination of AA, EP, UA, NO2 and XN. The electron transfer coefficients, diffusion coefficients and standard heterogeneous rate constant were determined for the - electrochemical oxidation of AA, EP, UA, NO2 and XN. Under the optimum conditions, detection - limits of 16.3, 3.92, 0.37, 29.9 and 0.13 μM were obtained for AA, EP, UA, NO2 , and XN, respectively. Moreover, the best modified GCE was applied for simultaneous determination of AA, - EP, UA, NO2 , and XN in Human urine, serum and AA Tables samples.
机译：在这项研究中，已使用具有不同碳同素异形体（例如多壁碳纳米管（MWCNT），石墨烯，布基球和石墨）的改性玻璃碳电极（GCE）用于同时测定抗坏血酸（AA），肾上腺素（EP），尿酸（UA），亚硝酸盐（NO2）和黄嘌呤（XN）。采用了不同的电化学方法，例如循环伏安法，差分脉冲伏安法和计时电流法，研究了AA，EP，UA，-NO2和XN在这些建议的修饰电极上的行为。带有MWCNT的修饰GCE已成功用于同时测定AA，EP，UA，NO2和XN。测定了AA，EP，UA，NO2和XN的电化学氧化反应的电子传递系数，扩散系数和标准异质速率常数。在最佳条件下，AA，EP，UA，NO2和XN的检出限分别为16.3、3.92、0.37、29.9和0.13μM。此外，最佳修饰的GCE用于同时测定人尿液，血清和AA表样品中的AA，-EP，UA，NO2和XN。

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