中文摘要：本文基于分子印迹聚合物（MIP）纳米粒子开发了一个用于二嗪磷（DZN）农药特异性和灵敏度检测的电化学传感器，通过悬浮聚合合成二嗪磷分子印迹聚合物纳米粒子，修饰碳糊电极（CPE）组成传感器，使用循环伏安法（CV）和方波伏安法（SWV）方法进行电化学测量。结果发现，基于分子印迹聚合物（MIP）纳米粒子修饰碳糊电极比具有基于非分子印迹聚合物（MIP）纳米粒子修饰碳糊电极具有更高的吸附能力。在最佳的提取和分析条件下，本文所构建传感器的二嗪磷检测灵敏度为95.08μA L/μmol，两个线性范围分别为2.5×10-9 -1.0×10-7 mol/L (R 2 = 0.9971) h和1.0×10-7-2.0×10-6 mol/L (R 2)= 0.9832)，检测限为7.9×10-10 mol/L。该传感器成功地对井水和苹果中二嗪磷农药残留进行了检测，回收率为92.53-100.86 %。
外文摘要：In this research, an electrochemical sensor based on molecularly imprinted polymer (MIP) nanoparticles for selective and sensitive determination of diazinon (DZN) pesticides was developed. The nanoparticles of diazinon imprinted polymer were synthesized by suspension polymerization and then used for modification of carbon paste electrode (CPE) composition in order to prepare the sensor. Cyclic voltammetry (CV) and square wave voltammetry (SWV) methods were applied for lectrochemical measurements. The obtained results showed that the carbon paste electrode modified by MIP nanoparticles (nano-MIP-CP) has much higher adsorption ability for diazinon than the CPE based non-imprinted polymer nanoparticles nano-NIP-CP). Under optimized extraction and analysis conditions, the proposed sensor exhibited excellent sensitivity (95.08 mu A L mu mol(-1)) for diazinon with two linear ranges of 2.5 x 10-9 to 1.0 x 10-7)mol L-1 (R (2) = 0.9971) and 1.0 x 10(-7) to 2.0 x 10(-6) mol L-1 (R (2) = 0.9832) and also a detection limit of 7.9 x 10(-10) mol.L-1. The sensor was successfully applied for determination of diaznon in well water and apple fruit samples with recovery values in the range of 92.53-100.86 %.
 
外文关键词：Electrochemical sensor, Molecularly imprinted polymer, Nanoparticles, Diazinon
作者：Motaharian, Ali; Motaharian, Fatemeh; Abnous, Khalil; Hosseini, Mohammad Reza Milani; Hassanzadeh-Khayyat, Mohammad
作者单位：Iran Univ Sci & Technol, Res Lab Real Samples Anal, Fac Chem, Tehran 1684613114, Iran.
期刊名称：ANALYTICAL AND BIOANALYTICAL CHEMISTRY
期刊影响因子：3.125
出版年份：2016
出版刊次：9
点击下载：一种基于分子印迹聚合物纳米粒子的电化学传感器及其在井水和苹果中二嗪磷农药残留检测中的应用