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Reference type: Journal
Authors: Alizadeh T, Ganjali MR, Zare M
Article Title: Application of an Hg2+ selective imprinted polymer as a new modifying agent for the preparation of a novel highly selective and sensitive electrochemical sensor for the determination of ultratrace mercury ions.
Publication date: 2011
Journal: Analytica Chimica Acta
Volume: 689
Issue: (1)
Page numbers: 52-59.
DOI: 10.1016/j.aca.2011.01.036
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-521M6F0-5/2/0446ced15e5e0d8b04499830f039e5cf

Abstract: A simple and very selective electrode, based on a mercury ion imprinted polymer (IIP), and its application for the determination of Hg2+ ions in the real samples is introduced. Mercury ion selective cavities were created in the vinyl pyridine based cross-linked polymer. In order to fabricate the sensor carbon particles and polymer powder were mixed with melted n-eicosane. An explicit difference was observed between the responses of the electrodes modified with IIP and non imprinted polymer (NIP), indicating proper performance of the recognition sites of the IIP. Various factors, known to affect the response behavior of selective electrode, were investigated and optimized. The interference of different ionic species with the response of the electrode was also studied. The results revealed that, compared to previously developed mercury selective sensors, the proposed sensor was more selective, regarding the common potential interferer. This sensor showed a linear response range of 2.5 x 10-9 - 5.0 x 10-7 M and lower detection limit of 5.2 x 10-10 M (S/N). The sensor was successfully applied to the determination of mercury in real samples
Template and target information: mercury ions, Hg(II)
Author keywords: Hg2+ imprinted polymer, Electrochemical sensor, carbon paste electrode, Ultratrace level


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