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Reference type: Journal
Authors: Khajeh M, Yamini Y, Ghasemi E, Fasihi J, Shamsipur M
Article Title: Imprinted polymer particles for selenium uptake: Synthesis, characterization and analytical applications.
Publication date: 2007
Journal: Analytica Chimica Acta
Volume: 581
Issue: (2)
Page numbers: 208-213.
DOI: 10.1016/j.aca.2006.08.037
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-4KRNR39-4/2/f53c32c4e1ee5a52aa0bab7ab2586d0c

Abstract: This work reports the preparation of molecularly imprinted polymer (MIP) particles for selective extraction and determination of selenium ions from aqueous media. Polymerization was achieved in a glass tube containing SeO2, o-phenylenediamine, 2-vinylpyridine (VP), ethyleneglycoldimethacrylate (EDMA), 2,2'-azobisisobutyronitrile (AIBN). The polymer block obtained was ground and sieved (55-75 μm) and the Se-o-phenylenediamine complex was removed from polymer particles by leaching with 2 M of HCl, which leaves a cavity in the polymer particles. The polymer particles both prior to and after leaching have been characterized by IR and thermogravimetric (TG) studies. The effect of different parameters, such as pH, extraction time, type and least amount of eluent for elution of complex from polymer were evaluated. Extraction efficiencies >99% were obtained by elution of the polymers with 15 mL of methanol-acetonitrile mixture (1:2, v/v). The limit of detection of the proposed method followed by hydride generation atomic absorption spectroscopy (HG-AAS) was found to be 3.3 μg L-1 and a dynamic linear range (DLR) of 10-200 μg L-1 was obtained. The relative standard deviations (R.S.D.s) at 30.0 μg L-1 of Se were below than 8.1%. The influence of various cationic interferences on percent recovery of complex was studied. The method was applied to the recovery and determination of selenium in different real samples
Template and target information: selenium ion, Se(IV)
Author keywords: selenium, molecular imprinted polymer, o-phenylenediamine, serum, elution

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