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Reference type: Journal
Authors: Kazemi E, Dadfarnia S, Haji Shabani AM, Ranjbar M
Article Title: Synthesis, characterization, and application of a Zn (II)-imprinted polymer grafted on graphene oxide/magnetic chitosan nanocomposite for selective extraction of zinc ions from different food samples.
Publication date: 2017
Journal: Food Chemistry
Volume: 237
Page numbers: 921-928.
DOI: 10.1016/j.foodchem.2017.06.053
Alternative URL: http://www.sciencedirect.com/science/article/pii/S030881461731035X

Abstract: A novel Zn(II) imprinted polymer was synthesized via a co-precipitation method using graphene oxide/magnetic chitosan nanocomposite as supporting material. The synthesized imprinted polymer was characterized by Fourier transform infrared spectrometry (FTIR) and scanning electron microscopy (SEM) and applied as a sorbent for selective magnetic solid phase extraction of zinc followed by its determination by flame atomic absorption spectrometry. The kinetic and isothermal adsorption experiments were carried out and all parameters affecting the extraction process was optimized. Under the optimal experimental conditions, the developed procedure exhibits a linear dynamic range of 0.5-5.0 μg L-1 with a detection limit of 0.09 μg L-1 and quantification limit of 0.3 μg L-1. The maximum sorption capacity of the sorbent was found to be 71.4 mg g-1. The developed procedure was successfully applied to the selective extraction and determination of zinc in various samples including well water, drinking water, black tea, rice, and milk
Template and target information: zinc ion, Zn(II)
Author keywords: Magnetic solid phase extraction, Flame atomic absorption spectroscopy, ion imprinted polymer, Graphene oxide, chitosan, zinc

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