Magnetic molecularly imprinted polymer (MMIP) was successfully synthesized with acrylamide as a functional monomer and clenbuterol (CLB) as a template molecule. The synthesized MMIPs were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectrometry (FT-IR). MMIPs were used to identify and bind CLB as a solid phase extraction material. The experiment data were fitted by the Freundlich isotherm adsorption model. The results show that MMIPs have excellent recognition performance for CLB. MMIPs were successfully applied as adsorbents to preconcentrated CLB in pork samples and detected by HPLC with UV. The limit of detection (LOD) and limit of quantification (LOQ) were 4.27 μg/L and 14.2 μg/L, respectively. The spiked recovery rates ranged from 94.44% to 102.29%. Therefore, the prepared MMIPs can be used for selective preconcentration of CLB content in complex animal-derived food samples.

中文翻译：

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用于选择性识别和测定猪肉样品中瘦肉精的磁性分子印迹聚合物的制备

以丙烯酰胺为功能单体，瘦肉精（CLB）为模板分子，成功合成了磁性分子印迹聚合物（MMIP）。通过扫描电子显微镜 (SEM)、X 射线衍射 (XRD) 和傅里叶变换红外光谱 (FT-IR) 对合成的 MMIP 进行表征。MMIPs 用于鉴定和结合 CLB 作为固相萃取材料。实验数据通过 Freundlich 等温吸附模型拟合。结果表明MMIPs对CLB有很好的识别性能。MMIPs 作为吸附剂成功应用于猪肉样品中的预浓缩 CLB，并通过 HPLC 和 UV 进行检测。检测限 (LOD) 和定量限 (LOQ) 分别为 4.27 μg/L 和 14.2 μg/L。加标回收率为 94.44% 至 102.29%。所以，