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Preparation and Application of Molecularly Imprinted Polymers for Chloramphenicol Based on Ionic Liquids Assistance |
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DOI: |
KeyWord:chloramphenicol molecularly imprinted polymers(MIPs) ionic liquids egg enrichment |
Author | Institution |
WANG Xiao-yu*,SUN Fu-qian,ZENG Guo-ping,LIU Xin-xin,YU Ji-wen,LAI Jia-ping* |
1.江西省科学院应用化学研究所;2.华南师范大学化学与环境学院 |
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Abstract: |
In this work,the molecularly imprinted polymers(MIPs) for chloramphenicol(CAP)(CAP-MIPs) were prepared by ionic liquids assistance using 2-vinylpyridine as functional monomer,ethylene glycol dimethacrylate(EGDMA) as the cross-linker and 2,2′-azobisisobutyronitrile(AIBN) as the initiator in the mixture of tetrahydrofuran and ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate([BMIm]BF4) as the porogenic solvent.The effects of functional monomer,progenic solvent on the binding capacity of MIPs were optimized.The MIPs possessed a high capacity and a favorable selectivity for CAP in the preparation of MIPs using 2-vinylpyridine as functional monomer and ionic liquid([BMIm]BF4)(1∶1,by volume) as polymeric solvent.The imprinting factor of CAP-MIPs reached to 2.6.The reusability of CAP-MIPs without any deterioration in capacity was demonstrated for five adsorption-desorption cycles.The developed method was applied in the enrichment and determination of CAP in spiked egg samples using CAP-MIPs as the adsorbent,with CAP recoveries of 62.3%-81.1%. |
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