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Reference type: Journal
Authors: Kala R, Biju VM, Rao TP
Article Title: Synthesis, characterization, and analytical applications of erbium(III) ion imprinted polymer particles prepared via γ-irradiation with different functional and crosslinking monomers.
Publication date: 2005
Journal: Analytica Chimica Acta
Volume: 549
Issue: (1-2)
Page numbers: 51-58.
DOI: 10.1016/j.aca.2005.06.024
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-4GMGWGJ-4/2/87966cb17fa7cc341ac97105b7755e0d

Abstract: Erbium(III) ion imprinted polymer (IIP) particles were synthesized by preparing erbium(III)-5,7-dichloroquinoline-8-ol-4-vinylpyridine prepolymer complex and then copolymerizing via γ-irradiation with different functional and crosslinking monomer combinations, viz. styrene-divinyl benzene, 2-hydroxyethyl methacrylate (HEMA)-ethylene glycoldimethacrylate (EGDMA), methyl methacrylate (MMA)-EGDMA. The erbium(III) imprint ion was removed by stirring the above particles with 6.0 mol l-1 HCl to obtain leached IIP particles. Control polymer (CP) particles were prepared without imprint ion. Again, CP, unleached and leached IIP particles were characterized by XRD, UV-vis spectrophotometric, pore size, SEM, and swelling ratio studies. The preconcentration of traces of erbium(III) during rebinding with leached IIP particles was studied as a function of pH, weight of polymer material, preconcentration and elution times, eluent concentration and volume, and aqueous phase volume. These studies indicate that as low as 2 μg of erbium(III) present in 500 ml can be preconcentrated into 20 ml of 1.0 mol l-1 HCl, and thus providing an enrichment factor of ~25. Furthermore, the present study indicates that styrene-divinyl benzene-based IIP could be a better choice for the separation of erbium(III) from yttrium(III), dysprosium(III), holmium(III), and thulium(III) compared to HEMA-EGDMA and MMA-EGDMA-based IIPs
Template and target information: erbium ion, Er(III)
Author keywords: γ-Radiation, Ion imprinted polymers, Functional and crosslinking monomers, lanthanides

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