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Reference type: Journal
Authors: Özkütük EB, Ersöz A, Denizli A, Say RI
Article Title: Preconcentration of phosphate ion onto ion-imprinted polymer.
Publication date: 2008
Journal: Journal of Hazardous Materials
Volume: 157
Issue: (1)
Page numbers: 130-136.
DOI: 10.1016/j.jhazmat.2007.12.118
Alternative URL: http://www.sciencedirect.com/science/article/B6TGF-4RM1M04-2/1/60519c239c0d681dd2a25a0ce3e83e78

Abstract: In this study, selective separation and preconcentration of phosphate ions on the phosphate-imprinted chitosan-succinate beads have investigated. Chitosan-succinate, phosphate, epichlorohydrin were used as the complexing monomer, template and crosslinking agent, respectively. In the first step, chitosan was modified with succinic anhydrides and complex formation occurred between carboxylic acid functional groups and iron(III) ions. Secondly, Fe(III)-chitosan-succinate particles were reacted with phosphate ions. Afterwards, particles were crosslinked with epichlorohydrin and the template (phosphate ions) was removed using 1áM KOH solution. Selective cavity for the phosphate ion was obtained in the phosphate-imprinted metal-chelate polymer. These phosphate-imprinted metal-chelate polymer was used in the adsorption-desorption process. The adsorption process was fast and equilibrium was reached around 30ámin. The adsorption behaviour of this system was described approximately by the Langmuir equation. Percent extraction, distribution ratio and selectivity coefficients of phosphate and other ions using non-imprinted and phosphate-imprinted polymer were also determined and comparison of these data was reported
Template and target information: phosphate ion
Author keywords: IIP, Phosphate determination, chitosan, preconcentration, solid phase extraction


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