摘要
以邻苯二胺为功能单体,赛诺吗嗪为印迹分子,采用电化学聚合法在石墨烯修饰的金电极上制备了可快速测定赛诺吗嗪的分子印迹电化学传感器。考察了功能单体的选择、石墨烯修饰金电极、扫描圈数等参数对该传感器性能的影响,利用循环伏安法、差分脉冲伏安法和电化学阻抗法对该传感器进行表征。赛诺吗嗪的线性范围为6.0×10^(-9)~6.0×10^(-4) mol·L^(-1),检出限(3s/k)为1.0×10^(-9) mol·L^(-1)。加标回收率在88.0%~102%之间,测定值的相对标准偏差(n=5)在2.0%~3.5%之间。
A molecularly imprinted electrochemical sensor for fast determination of cyromazine was prepared by electropolymerization on the graphene-modified gold electrode, with o phenylenediamine as the functional monomer and cyromazine as the imprinted molecular template. Several parameters controlling the performance of the molecularly imprinted electrochemical sensor were investigated in detail, such as the choice of functional monomer, the modification of gold electrode by graphene and the scan cycles, et al. Then the sensor was characterized by cyclic voltammetry, differential pulse voltanmtetry and electrochemical impedance raethod. The linear range of cyromazine was 6.0× 10^-9-6.0×10^-4mol·L^-1 ＇ with detection limit （3s/k） of 1.0×10^-9mol · L^-1. Recovery rates obtained by standard addition method were in the range of 88.0%-102%, and RSDs （n=5） were in the range of 2.0%- 3. 5%.
出处
《理化检验（化学分册）》
CSCD
北大核心
2017年第6期674-678,共5页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
国家自然科学基金面上项目(81373047)
关键词
循环伏安法
差分脉冲伏安法
分子印迹聚合物
赛诺吗嗪
传感器
cyclic voltammetry
differential pulse voltammetry
molecularly imprinted polymer
cyromazine
sensor
