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Reference type: Journal
Authors: Li Y, Zheng CM, Sun XL, Ouyang B, Ni P, Zhang YZ
Article Title: Identification of 3-chloro-1,2-propandiol using molecularly imprinted composite solid-phase extraction materials.
Publication date: 2014
Journal: Analytical and Bioanalytical Chemistry
Volume: 406
Issue: (25)
Page numbers: 6319-6327.
DOI: 10.1007/s00216-014-8059-2

Abstract: A novel molecularly imprinted material based on silica microparticles was synthesized by surface polymerization with 3-chloro-1,2-propandiol (3-MCPD) as a template molecule. The molecularly imprinted polymer (MIP) was characterized by infrared spectroscopy and scanning electron microscopy. The adsorption of 3-MCPD by MIP was measured by gas chromatography with electron capture detection (GC-ECD) and an equilibrium binding experiment. Scatchard analysis revealed that the maximum apparent binding capacities of the MIP and non-imprinted polymer (NIP) were 67.64 and 23.31 μmol/g, respectively. The new adsorbent was successfully used in solid-phase extraction (SPE) to selectively enrich and determine 3-MCPD in soy sauce samples. The MIP-SPE column achieves recoveries higher than 92.7 % with a relative standard deviation of less than 1.83 %. The MIP-SPE-GC protocol improved the selectivity and eliminated the effects of template leakage on quantitative analysis and could be used for the determination of 3-MCPD in other complex food samples
Template and target information: 3-chloro-1,2-propandiol, 3-MCPD
Author keywords: 3-MCPD, molecular imprinting, silica, microparticles, adsorption

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