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Reference type: Journal
Authors: Behbahani M, Barati M, Bojdi MK, Pourali AR, Bagheri A, Tapeh NAG
Article Title: A nanosized cadmium(II)-imprinted polymer for use in selective trace determination of cadmium in complex matrices.
Publication date: 2013
Journal: Microchimica Acta
Volume: 180
Issue: (11-12)
Page numbers: 1117-1125.
DOI: 10.1007/s00604-013-1036-1

Abstract: We describe a nanosized Cd(II)-imprinted polymer that was prepared from 4-vinyl pyridine (the functional monomer), ethyleneglycol dimethacrylate (the cross-linker), 2,2'-azobisisobutyronitrile (the radical initiator), neocuproine (the ligand), and Cd(II) (the template ion) by precipitation polymerization in acetonitrile as the solvent. The imprinted polymer was characterized by X-ray diffraction, thermogravimetric analysis, differential thermal analysis, and scanning electron microscopy. The maximum adsorption capacity of the nanosized sorbent was calculated to be 64 mg g-1. Cadmium(II) was then quantified by FAAS. The relative standard deviation and limit of detection are 4.2 % and 0.2 μg L-1, respectively. The imprinted polymer displays improve selectivity for Cd(II) ions over a range of competing metal ions with the same charge and similar ionic radius. This nanosized sorbent is an efficient solid phase for selective extraction and preconcentration of Cd(II) in complex matrices. The method was successfully applied to the trace determination of Cd(II) in food and water samples
Template and target information: cadmium ion, Cd(II)
Author keywords: cadmium, ion imprinted polymer, Nanosized, precipitation polymerization, Selective preconcentration

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