摘要
采用分子印迹技术,物质的量比为1∶2的Cu2+-邻菲啰啉配合物为模板,4-乙烯基吡啶为功能单体,乙二醇二甲基丙烯酸酯为交联剂,模板、功能单体与交联剂的物质的量比为1∶2∶30,在甲醇中用沉淀聚合法制备了一个铜离子印迹聚合物.该印迹聚合物在室温和pH 5.0的条件下对Cu2+的吸附可以在1h内达到平衡,理论饱和吸附容量(Qmax)为75.01mg/g,印迹因子(IF)为1.77.用该印迹聚合物制备的固相萃取柱对质量浓度为5.0μg/mL的Cu2+的萃取回收率为89.7%,相对标准偏差为4.7%(n=5).表明其有作为分析测定Cu2+时的固相萃取剂的应用前景.
A copper ion imprinted polymer （Cu（ Ⅱ ） -IIP） was prepared from methanol by precipitation polymeri- zation using Cu2 ＋ - 1,10 - Phenanthroline complex with the mole ratio of 1：2 as template molecules, 4 - vinyl pyri- dine as the functional monomer, ethyleneglyeol dimethaerylate as the cross - linking agent in the composition of template molecules, functional monomer and cross - linking agent of 1 ： 2：30 （ mole ratio）. The maximum adsorp- tion capability （ Qmax ） and imprinting factor （IF） of this imprinted polymer was calculated as 75.01 mg/g and 1.77 at room temperature and pH 5.0, and the adsorption process could achieve its equilibrium within 1 h. The recovery and relative standard deviation （RSD） for the extraction of Cu2 ＋ from the solution containing 5.0 μg/mL Cu2 ＋ by the solid phase extraction column prepared with the Cu（ Ⅱ ） -IIP was 89.7% and 4.7% （n =5 ）, respectively. The results showed that the Cu（ Ⅱ ） - IIP prepared in this paper possessed a good prospect in the application as a solid phase extraction reagent for the analysis and determination of Cu （ Ⅱ ）.
出处
《云南民族大学学报（自然科学版）》
CAS
2012年第1期18-21,共4页
Journal of Yunnan Minzu University:Natural Sciences Edition
基金
国家自然科学基金(20965009)
云南省自然科学基金(2009CD08)
关键词
铜(Ⅱ)
离子印迹聚合物
沉淀聚合法
固相萃取
Cu （ Ⅱ ）
ion -imprinted polymer
precipitation polymerization
solid phase extraction
