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首页> 外文期刊>International Journal of Electrochemical Science >Electrocatalytic Determination of Glutathione Using Multiwall Carbon Nanotubes Paste Electrode as a Sensor and Isoprenaline as a Mediator
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Electrocatalytic Determination of Glutathione Using Multiwall Carbon Nanotubes Paste Electrode as a Sensor and Isoprenaline as a Mediator

机译：以多壁碳纳米管糊电极为电极，异丙肾上腺素为介质，电催化测定谷胱甘肽

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摘要

In this study, we propose isoprenaline (ISPT) as a new mediator for the rapid, sensitive, and highlyselective voltammetric determination of glutathione (GSH) using multiwall carbon nanotubes pasteelectrode (MWCNTPE). It has been shown by direct current cyclic voltammetry, double stepchronoamperometry and electrochemical impedance spectroscopy (EIS) that this modified electrodecan catalyze the oxidation of GSH in aqueous solution. The kinetic parameters of the system includingelectron transfer coefficient, and catalytic rate constant were also determined using the electrochemicalapproaches. In addition, linear sweep voltammetry (LSV) was used for quantitative analysis. LSVshowed wide linear dynamic range (0.5 300.0 M GSH) with a detection limit of 0.09 M GSH.Finally, this method was also examined as a selective, simple and precise electrochemical sensor forthe determination of GSH in real samples such as hemolysed erythrocyte, tablet and urine.
机译：在这项研究中，我们建议使用异丙肾上腺素（ISPT）作为使用多壁碳纳米管糊状电极（MWCNTPE）快速，灵敏和高选择性伏安法测定谷胱甘肽（GSH）的新介质。通过直流循环伏安法，双步计时安培法和电化学阻抗谱法（EIS）已表明，这种修饰的电极可以催化水溶液中GSH的氧化。还使用电化学方法确定了系统的动力学参数，包括电子转移系数和催化速率常数。此外，线性扫描伏安法（LSV）用于定量分析。 LSV的线性动态范围宽（0.5 300.0 M GSH），检出限为0.09 M GSH。尿。

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