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以三聚氰胺(MA)作为功能单体,制备了一种检测环境中农药残留绿麦隆(CH)的分子印迹膜电化学传感器.基于CH与辣根过氧化物酶(HRP)标记绿麦隆(HRP-CH)的竞争反应实现对CH的检测.利用聚三聚氰胺膜(PMA)和HRP对过氧化氢的催化效应产生的双放大效应有效地提高传感器检测的灵敏度.采用计时电流法测量,CH浓度与峰电流差值在0.01～0.8μmol/L范围内呈现良好的线性关系,检出限为2.64 nmol/L.传感器对CH具有很好的选择识别性能.
A molecularly imprinted membrane electrochemical sensor was developed for the detection of pesticide residues in the environment with melamine (MA) as functional monomer. Based on CH and horseradish peroxidase (HRP) HRP-CH) competition reaction to achieve the CH detection.Using poly melamine membrane (PMA) and HRP on the catalytic effect of hydrogen peroxide double amplification effect to effectively improve the sensitivity of the sensor detection using chronoamperometry, CH concentration And the peak current difference in the range of 0.01 ~ 0.8μmol / L showed a good linear relationship with a detection limit of 2.64nmol / L. The sensor has a good selection of CH recognition performance.