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Reference type: Journal
Authors: Yan XN, Xu JS, Wang LL, Li XT, Xie J, Chen D, Deng J
Article Title: Preparation and application of isocarbophos sensor based on molecularly imprinting technique.
Publication date: 2012
Journal: Chinese Journal of Analysis Laboratory
Volume: 31
Issue: (2)
Page numbers: 41-46.
Alternative URL: http://en.cnki.com.cn/Article_en/CJFDTotal-FXSY201202013.htm

Abstract: In this paper,a non-conductive sensor is reported for the detection of isocarbophos which is based on a molecularly imprinted copolymer(MIP) of pGA-PD.The pGA-PD was electropolymerized on a glassy carbon electrode (GCE) with o-phenylenediamine (o-PD) and gallic acid (GA) as functional monomers and isocarbophos as template molecule via potentiodynamic cycling of potential in phosphate buffer solution(PBS). The performance of the MIP membrane was characterized by electrochemical impedance spectroscopy(EIS) and cyclic voltammetry (CV). Isocarbophos was measured by differential pulse voltammetry (DPV) through probe-K3Fe(CN)6 on the electrode.The results showed that,the peak currents were linear to the isocarbophos concentrations in the range from 2.00 10-7 to 2.00 10-4 mol/L,with the detection limit of 6.06 10-8 mol/L (S/N = 3) under the optimal conditions.Moreover,the MIP sensor was applied to the determination of isocarbophos in vegetables with the recoveries of 96.8%~104.0%.
Template and target information: isocarbophos
Author keywords: molecular imprinted polymer, electropolymerization, o-phenylenediamine, Gallic acid, Isocarbophos


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