氨基比林在乙炔黑-离子液体复合修饰玻碳电极上的电化学行为及含量的测定.pdf

第28卷第1期
化学研究与应用
Vo.28.No.1
2016年1月
Chemical Research and Application
Jan.,2016
文章编号:1004-1656(2016)01-009605
氨基比林在乙炔黑-离子液体复合修饰
玻碳电极上的电化学行为及含量的测定
陈纪文',马晓东,高作宁2
(1.银川能源学院石油化工学院,宁夏银川750105
2.宁夏大学能源化工重点实验室,化学化工学院,宁夏银川750021
摘要:用乙炔黑( Acetylene black,AB)和离子液体( Tonic liquid,L)制备了乙炔黑-离子液体复合修饰玻碳电极
(AB-I~s/GCE),并进行了电化学阻抗谱(EIS)表征。运用循环伏安法(CV)研究了氨基比林(AmP)在ABs
IGCE上的电化学行为。结果表明,AmP在GCE电极上于0.4IV附近有一不可逆氧化峰。与GCE相比,
AmnP在ABs/GCE上的氧化峰电位基本不变,氧化峰电流有不同程度的増大;而与ABs/GCE相比,ABs-L/
CCE上的氧化峰电位亦不变,氧化峰电流5。表明ABs-UGCE对AmP具有良好的电催化作用。据此建立了
AmP含量的电化学定量分析方法,RSD在0.2%~1.4%之间,加标回收率在97.80%~102.3%之间。该方法
简便快捷,测定结果令人满意。
关键词:氨基比林;乙炔黑;离子液体;电化学行为;电分析方法
中图分类号:0657.1文献标志码:A
Electrocatalytic behaviors of Amp at Acetylene black-ionic liquid
modified glassy carbon electrode and its electrochemical determination
CHEN Ji-wen", MA Xiao-dong, GAO Zuo-ning
(1. College of Petrochemical Engineering, Yinchuan Energy Institute, Yinchuan 750105, China
2. Ningxia Key Lab of Energy Resources and Chemical Engineerin
College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China)
Abstract Acetylene black-lonic liquid modified glassy carbon electrode(ab-ilgce)was prepared by Acetylene blackandlonic
liquid and characterized by electrochemical impedance spectroscopy(EIS) The electrochemical behaviors of Aminopyrine(Amp)on
AB-ILS/GCE were investigated by Cyclic volt ammet(CV )and Differential Pulse Voltammetry(DP), The exprimental result
showed an ireversible oxidation peak appeared on GCE at 0. 41V. However, the oxidation peak potentials of Amp keep constant on
AB/GCE than that of GE, the oxidation peak currents on A/GCE increased littler than that of GCE; compared with AB/GCE, the
oxidation peak potentials of Amp on Ab-ilgcealsokeep constant, the peak currents on AB-ILS/GCE increased 5 times than that
of AB/GE. The experimental result indicated that AB-1/GCE could catalyze the oxidation of Amp well. The quantitative determi
nation of Amp content was investigated, the relative standard deviation is between 0. 2%m1. 4% and the recoverage is in the range
of97.80%102. 3%. The proposed method can be applied in the determination of Amp in commercial samples with satisfied re
sults
收稿日期:20150506;修回日期:205-09-10
基金项目:银川能源学院科学硏究项目资助
联系人简介:高作宁(1957-),男,教授,主要从事于电化学及表面化学的研究。E-mail:gaoan@nxu,edu.cn