Abstract
Molecularly imprinted polymer (MIP) particles for malachite green (MG) were prepared by emulsion polymerization using methacrylic acid as the functional monomer, ethylene glycol dimethacrylate as the cross-linker, and a combination of Span-80 and Tween-80 as an emulsifier. The MIP particles were characterized by SEM micrographs and FT-IR spectra. Their binding capacity for MG was evaluated based on kinetic and isothermal adsorption experiments and compared to non-imprinted polymer particles. Analytical figures of merit include an adsorption equilibrium time of 15 min, an adsorption capacity of 1.9 mg∙g‾1 in acetonitrile-water (20:80), and an imprinting factor of 1.85. The MIP particles were successfully applied to the extraction of MG from fish samples spiked with MG and the other interfering substances prior to its determination of MG by HPLC. Spiked samples gave recoveries of MG that ranged from 86 to 104 %, much higher than that of the other interfering substance.
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Acknowledgments
This work was supported by SRF for ROCS, SEM (201210100002); the Science and Technology Planning Project of Fujian Province, China (2012Y0052, 2014Y0045); the Science and Technology Planning Project of Xiamen, China (3502Z20143018); Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering (M20140902); the Foundation for Innovative Research Team of Jimei University, China (2010A007); National Undergraduate Training Programs for Innovation and Entrepreneurship (201410390009, 20141039047).
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Li, L., Lin, Zz., Chen, Xm. et al. Molecularly imprinted polymers for extraction of malachite green from fish samples prior to its determination by HPLC. Microchim Acta 182, 1791–1796 (2015). https://doi.org/10.1007/s00604-015-1513-9
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DOI: https://doi.org/10.1007/s00604-015-1513-9