超声波辅助抽提法在孔雀石绿分子印迹固相萃取中的应用

摘要

Malachite green( MG)⁃molecularly imprinted polymers( MIPs) were prepared via precipitation polymerization�Using elution efficiency and adsorption of malachite green as indexes, we studied the effects of ultrasonic⁃assisted extraction on the elution of malachite green and adsorptive property of molecularly imprinted polymers were studied�Surface structure of molecularly imprinted polymers was observed by scanning electron microscope ( SEM ) �Adsorption properties of molecularly imprinted polymers were studied�Results show that the optimum technical parameters for elution efficiency were 30 mins,10 times,the ratio of MG⁃MIPs to methanol⁃acetic acid solvent=1/10(g/mL),25 ℃ and 270 W�The adsorption properties of molecularly imprinted polymers in solid phase extraction column attained 198 μg/g.%采用沉淀聚合法制备孔雀石绿分子印迹聚合物（ MG MIPs），以洗脱效率及吸附量为指标，考察超声波辅助抽提法对MIPs中MG洗脱效果及吸附性能的影响，通过扫描电镜观察MIPs的表面形态，并对其吸附性能进行研究。结果表明：模板分子MG在超声30 min、超声10次、料液比m（MG MIPs）∶V（甲醇乙酸溶液）为1∶10（ g／mL）、温度为25℃、超声功率为270 W的条件下，洗脱效果最好，MIPs在固相萃取柱中的吸附效率较高，达到198μg／g。