Isoproturon Sensor Based on Molecularly Imprinted Electropolymer
ZHAO Jun,LI Jian-Ping,JIANG Fu-Yang(Department of Material and Chemistry Engineering,Guilin University of Technology,Guilin 541004)
Under the condition of weak acidity(pH 5.5),molecularly imprinted films(MIF)on gold electrode were prepared by electropolymerization method for the determination of isoproturon.The imprinting effect,performance and the selective response to the structurally similar compounds of isoproturon were studied.Potassium ferricyanide was worked as the probe between the electrode and base solution,and a method for determining isoproturon was established.The sensor shows high selectivity and sensitivity towards the target isoproturon and it gives a linear correlation to isoproturon concentration over a range from 1.0×10-7 to 4.0×10-4 mol/L with a detection limit of 2.95×10-8 mol/L.The sensor has been applied to the analysis of isoproturon in farmland water samples with recovery ranging from 99.0% to 102.0%.
【Key Words】：
Molecular imprinted electrochemical sensor isoproturon poly(o-aminophenol)
【Fund】： 国家自然科学基金(No.20665003);; 广西高校百名中青年学科带头人基金(No.[2005]64);; 广西自然科学基金(No.0728214)资助项目
【CateGory Index】： TP212.3
【Fund】： 国家自然科学基金(No.20665003);; 广西高校百名中青年学科带头人基金(No.[2005]64);; 广西自然科学基金(No.0728214)资助项目
【CateGory Index】： TP212.3
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