Preparation of 2,4,6-trichlorophenol magnetic surface imprintedpolymer and the application in food samples
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摘要：
采用溶胶凝胶法,在磁性硅胶载体表面制备2,4,6-三氯苯酚印迹聚合物,通过多种手段对其微观形貌和结构进行表征,借助静态吸附实验对其吸附性能进行考察.结果显示,磁性印迹聚合物对2,4,6-三氯苯酚的识别过程符合Langmuir模型,最大吸附容量为55.34 mg·g-1,且在30 min左右可以达到饱和容量的84%,吸附特性符合伪二级动力学模型.与非印迹聚合物相比,印迹聚合物对混合溶液中的2,4,6-三氯苯酚具有良好的选择性吸附能力.结合高效液相色谱检测技术,所制备的磁性印迹聚合物能够用于黄瓜、苹果和菠菜中2,4,6-三氯苯酚的选择性吸附和检测.
A 2,4,6-trichlorophenol magnetic molecularly imprinted polymer was prepared via sol-gel process using Fe 3O 4 particles as carrier.The morphologies and structures of the polymers were characterized,and the adsorption properties and selective recognition characteristics of the polymer for different substrate were investigated.The results showed that the adsorption process of imprinted polymer towards 2,4,6-trichlorophenol was fit for Langmuir model,and the maximum adsorption capacity was 55.34 mg·g-1.The adsorption capacity can reach 84%of total binding amount in 30 min under the optimized conditions.The adsorption process can be described by pseudo-second-order dynamic model.Compared with the corresponding non-imprinted polymer,the magnetic imprinted polymer exhibited better selective adsorption performance for 2,4,6-trichlorophenol in mixed solution.Combined with high performance liquid chromatography,the presented imprinted material can be used for selective adsorption and determination of 2,4,6-trichlorophenol in cucumber,spinach and apple samples.
作者：
朱桂芬 程国浩 李世颖 于文娜 杨振国 王培云
Zhu Guifen;Cheng Guohao;Li Shiying;Yu Wenna;Yang Zhenguo;Wang Peiyun(School of Environment,Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control,Ministry of Education,Henan Key Laboratory for Environmental pollution Control,Henan Normal University,Xinxiang 453007,China;Zhengzhou sewage purification Co.,Ltd.,Zhengzhou 450001,China)
机构地区：
betway官方app 环境学院 郑州市污水净化有限公司
出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2020年第5期55-63,F0002,共10页
基金：
国家自然科学基金(21507023,21876045) 河南省高校科技创新团队(20IRTSTHN011) 河南省科技攻关项目(182102310656).
关键词：
2,4,6-三氯苯酚 磁性印迹聚合物 选择吸附 食品样品
2 4 6-trichlorophenol magnetic imprinted polymer selective adsorption food samples
分类号：
X132 [环境科学与工程—环境科学]
