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Reference type: Journal
Authors: Sergeyeva TA, Gorbach LA, Piletska EV, Piletsky SA, Brovko OO, Honcharova LA, Lutsyk OD, Sergeeva LM, Zinchenko OA, El'Skaya AV
Article Title: Colorimetric test-systems for creatinine detection based on composite molecularly imprinted polymer membranes.
Publication date: 2013
Journal: Analytica Chimica Acta
Volume: 770
Page numbers: 161-168.
DOI: 10.1016/j.aca.2013.01.048
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0003267013001967

Abstract: An easy-to-use colorimetric test-system for the efficient detection of creatinine in aqueous samples was developed. The test-system is based on composite molecularly imprinted polymer (MIP) membranes with artificial receptor sites capable of creatinine recognition. A thin MIP layer was created on the surface of microfiltration polyvinylidene fluoride (PVDF) membranes using method of photo-initiated grafting polymerization. The MIP layer was obtained by co-polymerization of a functional monomer (e.g. 2-acrylamido-2-methyl-1-propanesulfonic acid, itaconic acid or methacrylic acid) with N, N'-methylenebisacrylamide as a cross-linker. The choice of the functional monomer was based on the results of computational modeling. The creatinine-selective composite MIP membranes were used for measuring creatinine in aqueous samples. Creatinine molecules were selectively adsorbed by the MIP membranes and quantified using color reaction with picrates. The intensity of MIP membranes staining was proportional to creatinine concentration in an analyzed sample. The colorimetric test-system based on the composite MIP membranes was characterized with 0.25 mM detection limit and 0.25-2.5 mM linear dynamic range. Storage stability of the MIP membranes was estimated as at least 1 year at room temperature. As compared to the traditional methods of creatinine detection the developed test-system is characterized by simplicity of operation, small size and low cost
Template and target information: creatinine
Author keywords: Molecularly imprinted polymers, molecularly imprinted polymer membranes, grafting polymerization, Test-system, creatinine

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