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Reference type: Journal
Authors: Cheng WJ, Liu ZJ, Wang Y
Article Title: Preparation and application of surface molecularly imprinted silica gel for selective extraction of melamine from milk samples.
Publication date: 2013
Journal: Talanta
Volume: 116
Page numbers: 396-402.
DOI: 10.1016/j.talanta.2013.05.067
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0039914013004918

Abstract: Highly selective molecularly imprinted layer-coated silica gel (MIP@SiO2) for melamine (MEL) was prepared by the surface molecular imprinting technique on the supporter of silica gel. Non-imprinted polymer layer-coated silica gel (NIP@SiO2) and bulk molecularly imprinted polymer (MIP) were also prepared for comparison. Characterization and performance tests of the obtained products revealed that MIP@SiO2 not only had excellent selectivity to the target molecule MEL compared with NIP@SiO2, but also displayed absorption capacity superior to MIP due to the molecular recognition sites on the surface of silica gel. As the MIP@SiO2 were adopted as the adsorbents of solid-phase extraction for detecting MEL in milk samples, the recoveries of spiked samples ranged from 75.6% to 96.8% with the relative standard deviation of spiked samples less than 10%, which reveals that the MIP@SiO2 were efficient SPE adsorbents for melamine
Template and target information: melamine, MEL
Author keywords: molecularly imprinted polymer, silica gel, Solid-phase extraction, Melamine

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