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Reference type: Journal
Authors: Liu XF, Yao B, Liu GY, Chai CY
Article Title: Electrochemical Sensor for Diazepam Based on Molecularly Imprinted Film Modified Screen Printed Electrode.
Publication date: 2010
Journal: Journal of Instrumental Analysis
Volume: 29
Issue: (11)
Page numbers: 1121-1125,1131.
Alternative URL: http://en.cnki.com.cn/Article_en/CJFDTotal-TEST201011004.htm

Abstract: A molecularly imprinted film modified screen printed electrode(SPE) was prepared by cyclic voltammetry with electro-polymerization of o-phenylenediamine in the presence of diazepam which was removed later.The electrochemical characteristics of the imprinted and non-imprinted films were evaluated by differential pulse voltammogram.Potassium iodide was used as the probe between the modified electrode and the base solution,and a method for determination of diazepam was established.The molecularly imprinted film modified SPE showed the advantages of easy fabrication and replacement.The experimental results showed that the optimum incubation was 3 min,and a good linear relationship was obtained between peak current and concentration of diazepam in the range of 2.010-7-1.010-5 mol/L with a detection limit of 2.510-8 mol/L.The spiked recoveries of diazepam from meat sample ranged from 92% to 95%.The electrochemical sensor was successfully applied in the detection of diazepam in several samples.
Template and target information: diazepam
Author keywords: molecularly imprinting, electro-polymerization, Diazepam, Electrochemical sensor


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