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Electrocatalytic Oxidation and Electrochemical Determination of Methocarbamol at [BnMIM]PF6 Modified Carbon Paste Electrode |
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DOI:10.3969/j.issn.1004-4957.年份.月份 |
KeyWord:methocarbamol carbon paste electrode ionic liquid electrocatalytic oxidation |
Author | Institution |
段春玲,张艳梅,高作宁 |
宁夏大学化学化工学院 |
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Abstract: |
Electrocatalytic oxidation behaviors and electrochemical kinetics of methocarbamol (MET) were investigated at [BnMIM]PF6 modified carbon paste electrode ([BnMIM]PF6/CPE).The experimental results indicated that MET electrochemical behavior exhibits an irreversible electrochemical oxidation process at [BnMIM]PF6/CPE.The electrochemical kinetic parameters were determined by cyclic voltammetry(CV) and chronoamperometry(CA) at [BnMIM]PF6/CPE.The catalytic oxidation peak current of MET versus its concentration had a good linear relationship in the concentration range of 3.0×10-5-1.0×10-2 mol?L-1 with a detection limit(S/N=3)of 3.3 ×10-6 mol?L-1 by square wave voltammetry(SWV).The proposed method was successfully applied in the determination of MET contents in commercial tablet samples,with their relative standard deviations of 1.5% -2.5% and recoveries of 98% -99%. |
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