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Abstract: A novel multiple-template surface molecularly imprinted polymer (MTMIP) was synthesized using ofloxacin and 17β-estradiol as templates and modified monodispersed poly(glycidylmethacrylate-co-ethylene dimethacrylate) (PGMA/EDMA) beads as the support material. Static adsorption, solid-phase extraction and high-performance liquid chromatography were performed to investigate the adsorption properties and selective recognition characteristics of the polymer templates and their structural analogs. The maximum binding capacities of ofloxacin and 17β-estradiol on the MTMIP were 9.0 and 6.6 mg/g, respectively. Compared with the corresponding nonimprinted polymer, the MTMIP exhibited a much higher adsorption performance and selectivity toward three quinolones and three estrogens, which are common drug residues in food. The MTMIP served as a simple and effective pretreatment method and could be successfully applied to the simultaneous analysis of multiple target components in complex samples. Furthermore, the MTMIP may find useful applications as a solid-phase absorbent in the simultaneous determination of trace quinolones and estrogens in milk samples, as the recoveries were in the range 77.6-98.0%. Copyright © 2015 John Wiley & Sons, Ltd
Template and target information: multiple templates, ofloxacin, 17β-estradiol, E2
Author keywords: multiple-template surface molecularly imprinted polymer, Solid-phase extraction, Estrogen, Quinolone, Simultaneous analysis