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Reference type: Journal
Authors: Yang LY, Liu CY, Yang LN, You J
Article Title: A Study of Preparation and Performance of a Dichlorvos Electrochemical Sensor Based on Molecularly Imprinted Technique.
Publication date: 2012
Journal: Analytical Letters
Volume: 45
Issue: (9)
Page numbers: 1036-1044.
DOI: 10.1080/00032719.2012.670797

Abstract: A new dichlorvos molecularly imprinted electrochemical sensor was prepared. The sensitive membrane sensor was fabricated by electro-polymerizing on an Au electrode surface using o-aminophenol as a monomer and dichlorvos as a template. The 5 mmol/L K3[Fe(CN)6] containing 0.1 mol/L KCl was used as the test background solution, while cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to study the properties of the senor. The changes of oxidation peak current versus dichlorvos concentration showed linearity in the range of 0.120.42 μmol/L (R 2 = 0.9432) and 0.4515 μmol/L (R 2 = 0.9516) with a detection limit of 0.06 μmol/L (S/N = 3). Moreover, the selectivity and repeatability properties of the dichlorvos electrochemical sensor were examined. Results showed that the senor had excellent repeatability (RSD = 3.92%, n = 5), good selectivity to the dichlorvos in detection, and only a ten minute response time. Organophosphorus insecticides have some response signals in the detections.
Template and target information: dichlorvos
Author keywords: electrochemical sensors, molecularly imprinting, poly(o-aminophenol), Dichlorvos

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