甲苯嗪
分子印迹聚合物
色谱法
固相萃取
吸附
萃取(化学)
化学
高效液相色谱法
选择性
有机化学
麻醉
医学
氯胺酮
催化作用
作者
Cen Chen,Yuhang Zhang,Yulong Tang,Guangrong Huang,Han Jiang
摘要
Summary Magnetic molecularly imprinted polymers (MMIPs) were prepared by surface precipitation polymerisation, which used xylazine as its template molecule and Fe 3 O 4 as its support. The characterisation analysis and adsorption experiments of MMIPs were carried out. At the same time, promethazine, chlorpromazine, trifluoperazine, acepromazine and perphenazine were selected as structural analogues for selective experiments. The results showed MMIPs were successfully prepared with small particle size, excellent magnetic and thermal stability, high adsorption capacity and selectivity for xylazine. The maximum adsorption capacity of MMIPs for xylazine was 4.2017 mg g −1 , and the adsorption reached binding equilibrium within 30 min. The magnetic solid phase extraction (MSPE) based on MMIPs and traditional solid phase extraction (SPE) based on SPE column for xylazine in milk samples were compared and xylazine was analysed by HPLC. Although the difference between the two SPE methods was not significant, the MSPE method procedure took only about 35 min, which was faster than the traditional SPE method (>100 min), and the MSPE method had lower LOD (2.62 ng mL −1 ). MSPE has the advantages of simple operation, short extraction time, low cost and friendly to the environment, it has good application potential in the detection of xylazine in milk samples.
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