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Reference type: Journal
Authors: Gai P, Guo Z, Duan J, Zhang H, Wang S, Wei D
Article Title: Development of a highly-sensitive malachite green selective electrode.
Publication date: 2010
Journal: Chinese Journal of Sensors and Actuators
Volume: 23
Issue: (8)
Page numbers: 1062-1065.
DOI: 10.3969/j.issn.1004-1699.2010.08.003
Alternative URL: http://en.cnki.com.cn/Article_en/CJFDTotal-CGJS201008004.htm

Abstract: A PVC membrane malachite green (MG) selective electrode with high sensitivity was prepared with the ion-pair of malachite green-sodium tetraphenylborate as the electroactive substance, based on a two-dimensional functional material of restricted access media and molecularly imprinted polymers (RAM-MIPs), which could inhibit ion flux of MG, recognize MG specifically, and eliminate the matrix interference. The electrode showed a linear Nernst response in the range of 3.2 x 10-8 - 1 x 10-3 mol/L with pH 3 - pH 7.5 and a slope of 54.2 mV/pC. The low limit of detection was about 7 x 10-9 mol/L. With the better selectivity, precision and accuracy, this electrode was practicable for the analysis of MG in aquatic water and aquatic products
Template and target information: malachite green, MG
Author keywords: chemical sensor, Ion selective electrode, Malachite green, Molecularly imprinted polymers, PVC membrane, Restricted access media


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