Citation: WU Shanshan, WEI Chanling, ZHAO Lijuan, TIAN Yang, WANG Fuqiang, GONG Bolin. Preparation and application of magnetic reversed-phase restricted access material[J]. Chinese Journal of Chromatography, ;2018, 36(7): 608-614. doi: 10.3724/SP.J.1123.2018.01040 shu

Preparation and application of magnetic reversed-phase restricted access material

School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, 750021, China

Received Date: 28 January 2018

Fund Project: National Natural Science Foundation of China(No. 215605001).

Using magnetic silica (Fe₂O₃@SiO₂) as the matrix material, a magnetic reversed-phase restricted access material was prepared via surface-initiation atom transfer radical polymerization (SI-ATRP) on the surface of modified Fe₂O₃@SiO₂. Stearyl methacrylate (SMA) was grafted on the inner surface of the modified Fe₂O₃@SiO₂, and glycidylmethacrylate (GMA) was grafted on the outer surface of the modified Fe₂O₃@SiO₂. The magnetic reversed-phase restricted access material was prepared via acid hydrolysis. This material was characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM) and elemental analysis. The exclusion ability of the opened magnetic reversed-phase restricted access material to bovine serum albumin (BSA) was 90.4%. The maximum adsorbed amounts of sulfisoxazole (SIZ), sulfadimethoxine (SDM), trimethoprim (TMP) and sulfamerazine (SMR) were 2.76, 2.24, 1.51 and 1.34 mg/g, respectively. This material was applied to extract and enrich SIZ, SMR and SDM in milk and bovine serum samples. The spiked recoveries of SIZ, SMR and SDM were 88.7%-90.8%, and the relative standard deviations were 3.3%-5.3%. Thus, the magnetic phase restricted access material can simplify the pretreatment of biological matrix samples, and can be applied to the analysis and detection of blood samples or food samples.
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沈阳化工大学材料科学与工程学院沈阳 110142