中文摘要：

以2-烯丙基硫代-5-（4-吡啶基）-[1,3,4]噻二唑（AST）、苯乙烯（St）为单体,Hg（Ⅱ）离子作为模板,制备了新型的汞离子印迹共聚物（Hg（Ⅱ）-IIP）。采用傅里叶变换红外光谱仪（FT-IR）和扫描电镜（SEM）对印迹和非印迹聚合物的结构和形貌进行了表征。以原子吸收光谱法（FAAS）为检测手段,研究了Hg（Ⅱ）-IIP对Hg（Ⅱ）离子的吸附和选择识别能力。结果表明,在pH值5～8条件下,30 min即可达吸附平衡,饱和吸附量是38.5mg/g。以0.1mol/L HCl与0.5 mol/L硫脲水溶液作为洗脱剂,洗脱率达97%。Hg（Ⅱ）/Cd（Ⅱ）,Hg（Ⅱ）/Co（Ⅱ）,Hg（Ⅱ）/Ni（Ⅱ）,Hg（Ⅱ）/Zn（Ⅱ）和Hg（Ⅱ）/Mn（Ⅱ）的相对选择性系数分别为6.56,14.9,14.5,8.53和12.1,体现了Hg（Ⅱ）-IIP良好的选择吸附和识别能力。

英文摘要：

A new Hg（Ⅱ）ion-imprinted polymer（Hg（Ⅱ）-IIP）microspheres was synthesised for the separation and recovery of Hg（Ⅱ）ion from water sample.Hg（Ⅱ）-IIP was prepared by copolymerisation of 2-allylsulfanyl-5-（4-pyridinyl）-[1,3,4]thiadiazole（AST）,phenylethylene（St）and Hg（Ⅱ）ion.The structure and morphology of Hg（Ⅱ）-IIP and NIP were characterized by Fourier transform infrared spectroscopy（FT-IR）and scanning electronmicroscopy（SEM）.The adsorptive properties and the selectivity recognition ability of Hg（Ⅱ）-IIP were investigated.The results indicated that the maximum adsorption capacity was 38.5mg/g,the adsorption capacity reached equilibrium need 30 min at pH 5-8.Using 0.1mol/L HCl and 0.5 mol/L thiourea as desorption solvent,the desorption rate was more than 97%.The relatively selective factor（αr）values of Hg（Ⅱ）/Cd（Ⅱ）,Hg（Ⅱ）/Co（Ⅱ）,Hg（Ⅱ）/Ni（Ⅱ）,Hg（Ⅱ）/Zn（Ⅱ）and Hg（Ⅱ）/Mn（Ⅱ）are 6.56,14.9,14.5,8.53and12.1,respectively.Hg（Ⅱ）-IIP had excellent adsorption and selective recognition properties.