St-DVB基质阳离子交换固相萃取填料的研制及应用  

Development and characterization of cation exchange sorbent of St-DVB copolymer support for solid-phase extraction

作　　者：申书昌[1] 李媛媛[1] 柏叶春[1] 

机构地区：[1]齐齐哈尔大学分析测试中心,黑龙江齐齐哈尔161006

出　　处：《化学研究与应用》2011年第5期564-567,共4页Chemical Research and Application

基　　金：黑龙江省教育厅科学技术研究项目(11531410)

摘　　要：以玉米淀粉为分散剂,偶氮二异丁腈(AIBN)为引发剂,二乙烯基苯(DVB)为交联剂,在在氮气保护下,用悬浮聚合法制备了交联苯乙烯-二乙烯苯(St-DVB)高分子微球,用浓硫酸进行磺化,制成了以St-DVB为基质的阳离子交换固相萃取填料。考察了搅拌速度对交联聚苯乙烯微球粒径大小及分布的影响。分别用TEM,SEM/EDS和傅里叶红外光谱法对填料进行了形貌及结构分析,测定了磺化物的磺化度。自制阳离子交换固相萃取小柱,对水中的莠去津进行了应用试验,考察了性能。In this paper,used corn-starch as dispersing agent,2,2-azobisisobutyronitrile as initiator of polymerization,divinyl benzene as cross-linking agent,polystyrene-divinyl benzene microspheres were prepared by suspension polymerization under nitrogen.The polystyrene-divinyl benzene microspheres were sulfonated by concentrated sulfuric acid,the polystyrene-divinyl benzene sulphonic acid material as a cation exchange sorbent for solid phase extraction packing.stirring speed were investigated to cross-linked polystyrene particle size and distribution.The form,structure and composition of the polystyrene-divinyl benzene and the polystyrene-divinyl benzene sulphonic acid microspheres were characterized by means of transmission electron microscope,scanning electron microscope/energy dispersive X-ray spectrometer and fourier transform infrared spectroscopy measurement respectively the sulfonate sulfonation degree was Determinated by acid-soda titration method.The cation exchange solid phase extraction column made using the self-made and a plastic syringe.The atrazine in water was detected by solid phase extraction-HPLC

关 键 词：阳离子交换固相萃取 悬浮聚合 St-DVB 磺化 莠去津 

分 类 号：O658.13[理学—分析化学]