Application of Deep Eutectic Solvents in Hybrid Molecularly Imprinted Polymers and Mesoporous Siliceous Material for Solid-Phase Extraction of Levofloxacin from Green Bean Extract
Abstract
Deep eutectic solvents (DES) are potential ecofriendly surfactants for the preparation of materials. In this study, both molecularly imprinted polymers (MIPs) and mesoporous siliceous materials (MSMs) were modified by betaine-based DES. Six materials were employed as solid phase extraction (SPE) adsorbents for the rapid purification of levofloxacin. The DES-based materials showed better selective adsorption than the conventional materials. The adsorption curves of DES-MIP showed superior molecular recognition ability and binding capability for levofloxacin compared to the other materials. The limit of detection and limit of quantitation of the method were 0.01 and 0.03 μg/mL for levofloxacin, respectively. The method recoveries at three spiked levels were 97.2–100.2% for DES-MIP, with an RSD <1.8%. DESMIP showed the highest selective recovery (95.2%) for levofloxacin from the green bean extract, and could remove the interferent effectively.
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