微波辅助制备苯乙烯-甲基丙烯酸微球用于大米中三嗪类除草剂的分离和富集  

Microwave-assisted preparation of styrene-methacrylate microspheres for the separation and enrichment of triazine herbicides in rice samples

作　　者：周天瑜 王彦博 黎添添 侯景阳 ZHOU Tian-yu;WANG Yan-bo;LI Tian-tian;HOU Jing-yang(College of Environmental Science and Engineering,Jilin Normal University,Siping 136000,China;Key Laboratory of Environmental Materials and Pollution Control,The Education Department of Jilin Province,Jilin Normal University,Siping 136000,China;Key Laboratory of Preparation and Application of Environmental Friendly Materials,Ministry of Education,Jilin Normal University,Changchun 130103,China;College of Chemistry,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学环境科学与工程学院,吉林四平136000 [2]吉林师范大学吉林省高校环境材料与污染控制重点实验室,吉林四平136000 [3]吉林师范大学环境友好材料制备与应用教育部重点实验室,吉林长春130103 [4]吉林师范大学化学学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2021年第3期87-94,共8页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(B040101)。

摘　　要：采用乳液聚合结合微波辅助法一步制备粒径均匀的苯乙烯-甲基丙烯酸微球,并将其用作固相萃取吸附剂实现了对大米中痕量三嗪类除草剂的分离和富集.在优化的固相萃取条件下,获得了较高的回收率(91%~98%)和令人满意的稳定性(重复使用10次回收率在82%以上).该材料制备方法简单、快速、成本低,对复杂样品中痕量三嗪类除草剂萃取效率高,具有较高的应用潜力.Emulsion polymerization combined with microwave-assisted method was used to prepare styrene-methacrylic acid microsphere in one-step,and the microsphere was applied as solid phase extraction adsorbent for the separation and enrichment of trace triazine herbicides in rice samples.Under the optimized conditions,the established method exhibits higher recoveries(91%—98%)and stability(the recoveries are above 82%after 10 adsorption-desorption cycles).The preparation method of the material is simple,rapid and low cost,and exhibits high extraction efficiency for trace triazine herbicides in complex samples,which has high application potential.

关 键 词：乳液聚合 微波加热 苯乙烯-甲基丙烯酸吸附剂 分离和富集 三嗪类除草剂 

分 类 号：O657.63[理学—分析化学]