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Analytical Letters Volume 53, 2020 - Issue 7
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Preconcentration Techniques

Preparation of Magnetic Molecularly Imprinted Polymer (MMIP) Nanoparticles (NPs) for the Selective Extraction of Tetracycline from Milk

Wanru GaoCollege of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha, ChinaView further author information
,
Jiayin LiCollege of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha, ChinaView further author information
,
Pao LiCollege of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha, ChinaView further author information
,
Zhao HuangCollege of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha, ChinaView further author information
,
Yanan CaoCollege of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha, ChinaView further author information
&
Xia LiuCollege of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha, ChinaCorrespondence[email protected]
View further author information
Pages 1097-1112 | Received 06 Aug 2019, Accepted 23 Nov 2019, Published online: 04 Dec 2019
 
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Abstract

Core-shell magnetic molecularly imprinted polymer nanoparticles (MMIP NPs) were prepared for the adsorption and the isolation of tetracycline from food matrices. The obtained MMIP NPs were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffractometry, vibrating sample magnetometry, and thermogravimetric analysis. The adsorption properties of the MMIP NPs were systematically characterized by static, kinetic, and selective adsorption as well as reusability measurements. The MMIP NPs were shown to provide a high adsorption capacity, with a maximum value of 40.48 mg/g, satisfactory selectivity with an imprinting factor equal to 2.55, and direct magnetic separation. Moreover, the MMIP NPs were successfully applied to extract tetracycline from milk samples. Satisfactory recoveries from 91.14 to 104.52% were obtained.

Disclosure statement

The authors declare no conflicts of interest.

Additional information

Funding

This work was financially supported by the National Natural Science Foundation of China (grant numbers 31671931 and 31601551).

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