香兰素
电极
微分脉冲伏安法
电化学
石墨
材料科学
支撑电解质
铅笔(光学)
电化学气体传感器
电解质
循环伏安法
联氨(抗抑郁剂)
检出限
分析化学(期刊)
核化学
化学
色谱法
有机化学
冶金
物理化学
机械工程
工程类
作者
Sreelekshmi,Abhishek Wilson,Bhama Sajeevan,M. G. Gopika,Athira Babu,KM. Sreedhar,Beena Saraswathyamma
标识
DOI:10.1016/j.matpr.2022.11.048
摘要
Herein this report, a disposable electrochemical sensor was developed by modifying pencil graphite electrode by Poly 2,4-dinitrophenylhydrazine (PDNPH) using electropolymerizing technique for the detection of Vanillin (Van) or 4-Hydroxy-3-methoxybenzaldehyde. Electrochemical estimation of Vanillin was done with the help of Cyclic Voltammetry and Differential pulse voltametric techniques. The morphological characteristics were studied using SEM analysis. A single oxidation peak was obtained for Vanillin at the potential of + 0.5214 V. The adapted electrode exhibits a linear range of 1 µM −900 µM with LOD of 0.34 µM. The PDNPH/PG electrode was then used for real sample quantification and it manifested RSD value less than 5 % which revealed that the developed sensor is a favorable tool for quantification of Van. This is the first-time reporting Vanillin determination by using a modified pencil graphite electrode as working electrode in supporting electrolyte PBS 7.
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