2,4-二氯苯氧乙酸磁性印迹聚合物的制备与吸附性能  

Synthesis and Adsorption Property of Magnetic Molecularly Imprinted Polymers for Analysis of 2,4- Dichlorophenoxyacetic Acid

作　　者：徐莉[1] 徐小艳[2] 许志锋[3] 黄健文[1] 

机构地区：[1]华南农业大学材料与能源学院,广东广州510642 [2]华南农业大学食品学院,广东广州510642 [3]衡阳师范学院化学与材料科学系,湖南衡阳421008

出　　处：《中山大学学报（自然科学版）》2015年第5期72-76,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(21472038)

摘　　要：以2,4-二氯苯氧乙酸（2,4-D）为模板分子,甲基丙烯酸（MAA）为功能单体,Fe3O4为磁性载体,采用乳液聚合方法制备了相应的磁性分子印迹聚合物（Mag-MIPs）。采用透射电镜（TEM）、热重分析（TG）等对Mag-MIPs进行了一系列表征。吸附实验表明该磁性印迹聚合物对2,4-D的吸附能力明显强于非印迹聚合物。采用Mag-MIPs为固相萃取材料,结合高效液相色谱分析,对质量浓度约为50μg·L-1模拟水样中的2,4-D进行了分析检测,样品回收率范围为91.7%～110.4%,相对平均偏差为7.38%（n=3）。In this work,the magnetic molecularly imprinted polymers（ Mag-MIPs） based on Fe3O4 magnetite were prepared using 2,4- dichlorophenoxyacetic acid（ 2,4- D） as a template molecule. The morphological and magnetic characteristics of the Mag-MIPs were characterized by transmission electron microscopy（ TEM）,fourier transform infrared spectrometer（ FT-IR）,and vibrating sample magnetometry（ VSM）. The specific adsorption property was studied using binding experiment. The result showed that Mag-MIPs had higher recognition for the template than the non-imprinted polymers（ Mag-NIPs）.Moreover,the specific recognition of Mag-MIPs was further investigated using solid phase extraction（ SPE） coulped high performance liquid chromatography（ HPLC） analysis of the simulation water samples. The maximum recoveries of spiked sample were in range of 91. 7% ～ 110. 4% with RSD 7. 38（ n =3）. These results indicate that mag-MIPs has potential application in separation and analysis of biological and environmental sample.

关 键 词：2 4-二氯苯氧乙酸 磁性分子印迹聚合物 表征 固相萃取 

分 类 号：O633[理学—高分子化学]