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.

中文翻译：

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用于从牛奶中选择性提取四环素的磁性分子印迹聚合物 (MMIP) 纳米颗粒 (NPs) 的制备

摘要 制备了核壳磁性分子印迹聚合物纳米粒子（MMIP NPs），用于从食品基质中吸附和分离四环素。通过透射电子显微镜、傅里叶变换红外光谱、X 射线衍射、振动样品磁强法和热重分析对获得的 MMIP NPs 进行表征。MMIP NPs 的吸附特性通过静态、动力学和选择性吸附以及可重复使用性测量系统地表征。MMIP NPs 被证明具有高吸附容量，最大值为 40.48 mg/g，具有令人满意的选择性，印记因子等于 2.55，并且直接磁分离。此外，MMIP NPs 已成功应用于从牛奶样品中提取四环素。91 年的令人满意的恢复。