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Citation: YU Ting-Ting, SU Li-Qiang, LAN Zhi-Man, LI Guo-Wu, HAN Shuang, QIN Shi-Li, ZHANG Wei-Bing. Preparation and Application of Core-shell Chloramphenicol Molecularly Imprinted Polymer Based on MIL-101[J]. Chinese Journal of Analytical Chemistry, ;2020, 48(12): 1694-1700. doi: 10.19756/j.issn.0253-3820.201462 shu

Preparation and Application of Core-shell Chloramphenicol Molecularly Imprinted Polymer Based on MIL-101

1.
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China;
2.
Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China

Received Date: 4 August 2020
Revised Date: 10 October 2020

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21974045) and the Research Project of Education Department of Heilongjiang Province (No.135409305).

Core-shell chloramphenicol (CAP) molecularly imprinted polymer was prepared by sol-gel method with chloramphenicol as template molecule and metal-organic framework material MIL-101 as substrate. The structure and morphology of MIL-101 and molecularly imprinted polymer were characterized by X-ray diffraction (XRD), Fourier transform infrared spectrum (FTIR), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results showed that MIL-101 had a regular octahedral structure, and the surface was covered with ordered and porous imprinted polymers. The kinetics and selective adsorption properties of molecularly imprinted polymers were tested. The maximum adsorption capacity of the imprinted polymer was 66.56 mg/g, and the adsorption equilibrium reached within 22.5 min. The imprinted polymer had high selective recognition ability to chloramphenicol. The molecularly imprinted polymers were used as solid phase extraction filler for analysis of chloramphenicol in aquatic products by HPLC method, with recoveries of 75.0%-103.7% and relative standard deviations of 1.2%-3.9% (n=5).
- Molecular imprinting,
- MIL-101,
- Chloramphenicol,
- Solid phase extraction
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