Poly (Adenine) Modified Graphene-Based Voltammetric Sensor for the Electrochemical Determination of Catechol, Hydroquinone and Resorcinol

J. G. Manjunatha
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引用次数: 36

Abstract

This paper presents the application of Poly (Adenine) Modified Graphene Paste Electrode (PAMGPE) for the analysis of Catechol (CC) with Resorcinol (RC) and Hydroquinone (HQ) by a voltammetric technique. Electropolymerization technique was utilized for the modification of the sensor surface. The electrode surface was characterized by Field Emission Scanning Electron Microscopy (FE-SEM). Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV) were used to study the redox behavior of CC, RC and HQ. Oxidation peak current of CC increased linearly with the concentration of CC in the range from 2×10-6- 8×10-6 M and 1×10-5-1.5 ×10-4 M with a detection limit of 2.4×10-7 M. The practical application of the developed sensor was verified as exact for the determination of CC in water sample. The stability, repeatability, and reproducibility of the developed electrode were studied and established good characteristics. Furthermore, the PAMGPE was examined for the simultaneous determination of CC, RC and HQ.
聚腺嘌呤修饰石墨烯伏安传感器电化学测定儿茶酚、对苯二酚和间苯二酚
本文介绍了聚腺嘌呤修饰石墨烯糊电极(PAMGPE)在邻苯二酚(CC)、间苯二酚(RC)和对苯二酚(HQ)的伏安分析中的应用。利用电聚合技术对传感器表面进行修饰。采用场发射扫描电镜(FE-SEM)对电极表面进行了表征。采用循环伏安法(CV)和差分脉冲伏安法(DPV)研究了CC、RC和HQ的氧化还原行为。在2×10-6 ~ 8×10-6 M和1×10-5-1.5 ×10-4 M范围内,CC的氧化峰电流随CC浓度线性增加,检出限为2.4×10-7 M,验证了该传感器对水样中CC的测定是准确的。研究了该电极的稳定性、重复性和再现性,并建立了良好的特性。此外,PAMGPE用于同时测定CC、RC和HQ。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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