以Cu2+-邻菲啰啉配合物为模板制备铜离子印迹聚合物

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.

Study on the Synthesis of Copper Ion Imprinted Polymer byUsing Cu2+-1,10-Phenanthroline Complex as Template Molecules

A copper ion imprinted polymer(Cu(Ⅱ)–IIP) was prepared from methanol by precipitation polymerization using Cu2+-1,10-Phenanthroline complex with the mole ratio of 1∶2 as template molecules,4-vinyl pyridine as the functional monomer,ethyleneglycol dimethacrylate 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 adsorption 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 1h.The recovery and relative standard deviation(RSD) for the extraction of Cu2+ from the solution containing 5.0μg/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).