MIPdatabase
Authors: Alizadeh T
Article Title: Preparation of molecularly imprinted polymer containing selective cavities for urea molecule and its application for urea extraction.
Publication date: 2010
Journal: Analytica Chimica Acta
Volume: 669
Issue: (1-2)
Page numbers: 94-101.
DOI: 10.1016/j.aca.2010.04.044
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-4YYXJSD-3/2/fdad550cede5da8670da701411b34643
Abstract: A new molecularly imprinted polymer material having urea molecule selective cavities was introduced. Urea was properly dissolved in acetonitrile in the presence of an acidic functional monomer. Molecularly imprinted polymers with different compositions were examined and the roper formulation was selected. It was shown that the MIP had a considerable selectivity for urea in comparison to similar compounds such as thiourea and hydroxyurea. The obtained polymer was used as an adsorber for solid phase extraction (SPE) of urea in the aqueous samples. The extracted urea was determined by using a spectrophotometric method. Different parameters of SPE were optimized and the developed procedure was used for urea determination in real samples. The calibration graph of the method was linear in the range of 0.6-8.3 μmol L-1. The detection limit was calculated to be 0.14 μmol L-1
Template and target information: urea
Author keywords: urea, molecularly imprinted polymer, solid phase extraction, spectrophotometric method, Thiourea
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