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Reference type: Journal
Authors: Wei SL, Su XX, Wang HW, Yan ZJ
Article Title: Study and Application of Acid Orange II Sensor Based on Molecularly Imprinted Electropolymerized Membrane.
Publication date: 2014
Journal: Journal of Instrumental Analysis
Volume: 33
Issue: (6)
Page numbers: 683-687.
Alternative URL: http://fxcsxb.com/ch/reader/view_abstract.aspx?file_no=20140611&flag=1

Abstract: A voltammetric sensor for the determination of acid orange II (AO2) was developed based on molecularly imprinted electropolymerized membrane. The sensor was obtained by electropolymerization of o-phenylenediamine (o-PD) and m-dihydroxybenzene (m-DB) on a platinum electrode in the presence of AO2 as a template. The recognition performance of the sensor was studied in the presence of potassium ferricyanide (K3[Fe (CN)6]) by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The template was removed by washing with methanol-acetic acid (7:3) solution. The studies revealed that the imprinted sensor showed an excellent selectivity, sensitivity and stability for AO2. The response of the imprinted sensor was linear with concentration of AO2 from 1.0 μg/L to 100.0 μg/L, and the detection limit (S/N=3) was 0.10 μg/L. The method was applied in the detection of AO2 in drinks and beer samples with satisfactory results.
Template and target information: acid orange II, AO2
Author keywords: molecular imprinting, electropolymerization, o-phenylenediamine, m-dihydroxybenzene, acid orange II

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