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Reference type: Journal
Authors: Wang Y, Gong QQ, Fang C, Cao YH
Article Title: Preparation and characteristics of electrochemical sensor for salicylic acid based on molecularly imprinted polymers.
Publication date: 2011
Journal: Chinese Journal of Analysis Laboratory
Volume: 30
Issue: (6)
Page numbers: 82-85.
Alternative URL: http://en.cnki.com.cn/Article_en/CJFDTotal-FXSY201106024.htm

Abstract: A molecularly imprinted polymer(MIP) film was synthesized on the surface of a glassy carbon electrode with the salicylic acid(SA) as template.Electrochemical oxidation behaviors of SA on the imprinted electrode were investigated by square wave voltammetry.As the incubation time of 7 min,the peak current was proportional to the concentration of SA in the range from 1.010-5 to 2.610-4 mol/L with a detection limit of 2.010-6 mol/L(S/N=3).The RSD of the peak current was 3.7 %(n = 7).The imprinted electrode displayed good specificity.The selective coefficients of structural analogs were 12 and 6.9 for p-hydroxybenzoic acid and p-aminobenzoic acid,respectively.The MIP sensors had been used to determine SA in cosmetic samples with recoveries between 99.9% and 106.7%.
Template and target information: salicylic acid, SA, 2-hydroxybenzoic acid
Author keywords: Molecularly imprinted polymers, salicylic acid, Square wave voltammetry, Cosmetic

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