基于AgNPs@PDA@Gr分子印迹电化学传感器的制备及对多菌灵的测定  

Development of a molecularly imprinted electrochemical sensor based on AgNPs@PDA@Gr for carbendazim detection

作　　者：常惟丹 杨源 李超凡 鲍长俊 陈威风 CHANG Wei-dan;YANG Yuan;LI Chao-fan;BAO Chang-jun;CHEN Wei-feng(School of Food and Biological Engineering,Henan University of Animal Husbandry and Economy,Henan Zhengzhou 450046,China;Yunnan Hengxin Pharmaceutical Co.,Ltd,Yunnan Kunming 650000,China)

机构地区：[1]河南牧业经济学院食品与生物工程学院,河南郑州450046 [2]云南恒新制药有限公司,云南昆明650000

出　　处：《化学研究与应用》2025年第4期1019-1025,共7页Chemical Research and Application

基　　金：河南省科技攻关项目(232102320285)资助;河南牧业经济学院博士启动项目(M4050087)资助;河南牧业经济学院食品科学与工程重点学科(XJXK202203)资助。

摘　　要：本文制备了一种基于AgNPs@PDA@Gr复合纳米材料修饰的分子印迹电化学传感器,用于多菌灵的痕量检测,其中多菌灵为模板分子,邻苯二胺为功能单体,氢氧化钠为洗脱液。采用循环伏安法、交流阻抗法和差分脉冲伏安法对传感器进行表征。在1.0×10^(-12)~1.0×10^(-6)mol/L范围内,多菌灵浓度与电流变化值呈正相关,线性方程为:ΔI(μA)=5.86 lgC+71.56(mol/L),相关系数R为0.9949,检出限为2.37×10^(-13)mol/L。在实际样品西红柿和苹果的检测中,样品加标回收率在96.0%~105.9%之间。结果表明,该传感器对多菌灵具有良好的识别检测能力,在食品检测、食品安全等领域具有良好的应用前景。A carbendazim molecularly imprinted electrochemical sensor was fabricated based on AgNPs@PDA@Gr nanocomposites,the carbendazim was treated as the template molecule,o-phenylenediamine was used as the functional monomer,and sodium hydroxide was employed as the eluent.The fabricated sensor was characterized by cyclic voltammetry,electrochemical impedance spectroscopy,and differential pulse voltammetry.In the range of 1.0×10^(-12)to 1.0×10^(-6)mol/L,the concentration of carbendazim was a positively correlated with the change of current.The linear equation wasΔI(μA)=5.86 lgC+71.56(mol/L),with a correlation coefficient of 0.9949,and the LOD was 2.37×10^(-13)mol/L.The sensor was also applied to detection of carbendazim in actual sample,such as tomatoes and apples,and the recovery rates were from 96.0%to 105.9%.Thus,these results demonstrated that the prepared sensor has excellent recognition ability for carbendazim detection,and also has great application prospects in the field of food detection and food safety.

关 键 词：AgNPs@PDA@Gr 分子印迹电化学传感器 多菌灵 检测 

分 类 号：O614.1[理学—无机化学]