铅离子印迹聚合物的制备及特异吸附性能研究  

Study on the preparation of lead ion imprinted polymer and its specific adsorption performance

作　　者：苏现伐[1] 石慧丽[1] 朱桂芬[1] 高燕哺[1] 樊静[1] 

机构地区：[1]河南师范大学化学与环境科学学院,黄淮水环境与污染防治省部共建教育部重点实验室,河南省环境污染控制重点实验室,河南新乡453007

出　　处：《冶金分析》2009年第8期16-20,共5页Metallurgical Analysis

基　　金：河南省基础与前沿技术研究计划项目(082300423202);高等学校博士学科点专项科研基金(200804760004)

摘　　要：利用分子印迹技术合成了以铅离子为模板离子,甲基丙烯酸为功能单体的离子印迹聚合物,通过红外光谱对聚合物的化学结构进行了表征,采用静态平衡吸附实验法分析铅离子印迹聚合物的吸附性能和选择性。结果表明,与非印迹聚合物相比,铅离子印迹聚合物对铅离子具有较好的特异吸附性能和选择性识别能力,对鉛离子的特异吸附容量为0.766mg/g,而对与铅性质相近的镉、汞、锰、铜和锌金属离子的特异吸附量小,分别为0.055mg/g,0.061mg/g,0.059mg/g,0.037mg/g和0.003mg/g;铅离子在印迹聚合物中的分配系数较其他金属离子大,是镉离子在印迹聚合物中的分配系数约22倍,因此可在大多数金属离子共存时选择性吸附痕量铅。The ion imprinted polymer was synthesized with molecular imprinting technique. In this polymer, the template ion was lead ion and the functional monomer was methaerylate ester. The chemical structure was characterized by infrared spectrometry. The adsorption property and selectivity of lead ion imprinted polymer was studied by static equilibrium adsorption method. The results showed that compared with non-imprinted polymer, the imprinted polymer had better specific adsorption property and selectivity to lead ion. The specific adsorption capacity for lead was 0. 766 mg/g. However, for other ions with similar properties to lead including cadmium, mercury, manganese, copper and zinc, the specific adsorption capacities were 0. 055 mg/g, 0. 061 mg/g, 0. 059 mg/g, 0. 037 mg/g and 0.003 mg/g, respectively. The distribution coefficient of lead in imprinted polymer was larger than that of other metal ions （about 22 times of cadmium）. Therefore, this polymer could be used for the selective adsorption of trace lead from most coexisting metal ions.

关 键 词：铅 离子印迹聚合物 制备 特异吸附 

分 类 号：O631.3[理学—高分子化学]