Synthesis and application of ion-imprinted polymer nanoparticles for the extraction and preconcentration of zinc ions. (15th April 2015)

• Record Type: Journal Article
• Authors: Roushani, Mahmoud; Abbasi, Shahryar; Khani, Hossein; Sahraei, Reza
• Is Part Of: Food chemistry. Volume 173(2015)
• Page Start: 266
• Page End: 273
• Publication Date: 2015-04-15
• Subjects: Ion imprinted polymer -- Nanoparticles -- Zinc -- Preconcentration; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2014.10.028
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: A novel Zn(II) ion-imprinted polymers (Cu-IIP) nanoparticles was prepared. Characterisation studies of Cu-IIP by FT-IR, SEM, XRD and colorimetry. Highly selective and sensitive determination of Zn 2+ in complex matrices. Rapid kinetics of adsorption and desorption of Zn 2+ ion on the resulting IIPs. Abstract: A new Zinc (II) ion-imprinted polymer (IIPs) nanoparticles was synthesised for the separation and recovery of trace Zn (II) ion from food and water sample. Zn (II) IIP was prepared by copolymerisation of methyl methacrylate (monomer) and ethylene glycol dimethacrylate (cross-linker) in the presence of Zn (II)-N, N′-o-phenylene bis (salicylideneimine) ternary complex wherein Zn (II) ion is the imprint ion and is used to form the imprinted polymer. Moreover, control polymer (NIP) particles were similarly prepared without the zinc (II) ions. The unleached and leached IIP particles were characterised by X-ray diffraction, Fourier transform infra-red spectroscopy and scanning electron microscopy. The preconcentration of Zn 2+ from aqueous solution was studied during rebinding with the leached IIP particles as a function of pH, the weight of the polymer material, the uptake and desorption times, the aqueous phase and the desorption volumes. Flame atomic absorption spectrometry was employed for determination of zinc in aqueous solution.