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Molecularly Imprinted Polymer‐based Novel Electrochemical Sensor for the Selective Detection of Aldicarb
Physica Status Solidi (A) - Applications and Materials Science ( IF 2 ) Pub Date : 2020-03-25 , DOI: 10.1002/pssa.201900599
Suryansh Saxena 1 , Garimella B. V. S. Lakshmi 1 , Deepika Chauhan 1 , Pratima R. Solanki 1
Affiliation  

The development of a novel, molecularly imprinted polymer (MIP), based on polyaniline nanofibers (PANInfs) for the electrochemical detection of aldicarb (Ald), is reported. PANInfs are synthesized by the simple interfacial polymerization method with and without the presence of Ald. A part of the PANInfs containing Ald (MIP‐Ald) is dispersed in deionized (DI) water and sonicated to remove Ald and obtain MIP. The MIP, bare PANInfs (non‐imprinted polymer or [NIP]), and the nonsonicated polymer (MIP‐Ald) are separately drop cast onto hydrolyzed indium tin oxide (ITO)‐coated glass. All these three types of electrodes are characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, and cyclic voltammetry (CV) techniques to understand their structure, morphology, and successful synthesis of the desired compounds. The electrochemical detection of Ald is conducted using differential pulse voltammetry (DPV). This MIP‐based sensor is able to detect Ald in the range of 50–80 nM with a limit of detection 500 pM L−1, having a sensitivity of 6.83 ± 0.09 μA nM−1 cm−2, making it an ideal candidate for Ald detection. This method is adapted to synthesize MIPs of other pesticides by which the cost and the detection time is reduced considerably.

中文翻译:

基于分子印迹聚合物的新型电化学传感器,可选择性检测涕灭威

据报道,基于聚苯胺纳米纤维(PANInfs)的新型分子印迹聚合物(MIP)的开发用于电化学检测涕灭威(Ald)。PANInfs通过有或没有Ald的简单界面聚合方法合成。将一部分含有Ald的PANInfs(MIP-Ald)分散在去离子(DI)水中,并进行超声处理以去除Ald并获得MIP。将MIP,裸露的PANInfs(非压印聚合物或[NIP])和非超声处理的聚合物(MIP-Ald)分别滴铸到水解的氧化铟锡(ITO)涂层的玻璃上。所有这三种类型的电极均通过傅里叶变换红外光谱,拉曼光谱,扫描电子显微镜和循环伏安(CV)技术进行表征,以了解其结构,形态,并成功合成所需化合物。Ald的电化学检测使用差分脉冲伏安法(DPV)进行。这种基于MIP的传感器能​​够检测50–80 nM范围内的Ald,检测限为500 pM L-1,其灵敏度为6.83±0.09μAnM -1  cm -2,使其成为Ald检测的理想选择。该方法适用于合成其他农药的MIP,从而大大降低了成本和检测时间。
更新日期:2020-03-25
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