表面铅(Ⅱ)印迹聚合物的制备及其分离富集性能研究
Preparation of Surface Pb(Ⅱ) Imprinted Polymer and Study on Its Performance of Separation and Enrichment
摘 要
以铅(Ⅱ)为印迹离子,以3-氨基丙基-三乙氧基硅烷为功能单体,用表面印迹技术在纳米TiO2/SiO2表面聚合形成铅(Ⅱ)印迹聚合物。试验结果表明:在静态吸附条件下,铅(Ⅱ)印迹聚合物对铅(Ⅱ)的吸附量为非印迹聚合物吸附量的3倍。控制富集的含铅(Ⅱ)样品溶液pH为4,体积最大为200 mL,通过柱的流量为1.0 mL·min-1。用电感耦合等离子体原子发射光谱法测定了洗脱液中的铅量。方法的检出限(3s)为0.09 μg·L-1。以湖水样品为基体,用标准加入法做回收试验,测得回收率在95.6%~98.1%之间。应用所提出方法分析了2种国家一级标准物质,测得铅含量与认定值一致。
铅(Ⅱ)
分离
富集
Surface Pb(Ⅱ) imprinted polymer
Lead(Ⅱ)
Separation
Enrichment
Abstract
Surface Pb(Ⅱ) imprinted polymer (SPbIP) was prepared by using Pb(Ⅱ) as the imprinting ion, 3-aminpropyltriethoxysilane as the functional monomer to form Pb(Ⅱ) imprinted polymer on the surface of nano TiO2/SiO2 by surface imprinting technique. It was shown that under condition of static adsorption, the adsorption capacity of SPbIP was found 3 times higher than that of non-SPbIP. Acidity of sample solution having its maximum volume of 200 mL, was adjusted to pH 4 and passed through the SPbIP column at a flow-rate of 1.0 mL·min-1. Content of Pb(Ⅱ) in the eluate was determined by ICP-AES. The detection limit (3s) found was 0.09 μg·L-1. Recovery was tested by standard addition method using samples of lake water as matrixes, values of recovery found were in the range of 95.6% to 98.1%. Lead in 2 CRM′s was determined by the proposed method, giving results in consistency with the certified values.
中图分类号 O657.31
所属栏目 工作简报
基金项目 青海省科技厅项目(2012-Z-903);国家自然基金项目(21267018;31060065;41161058)资助
收稿日期 2013/6/21
修改稿日期
网络出版日期
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备注郑红(1967-),女,陕西澄城人,教授,博士,主要从事原子光谱的研究工作。
引用该论文: ZHENG Hong,ZHANG Jing,XIA Xiao-shan,GU Jing,WANG Bin,HAN Hong-ping,WANG Yi-bo. Preparation of Surface Pb(Ⅱ) Imprinted Polymer and Study on Its Performance of Separation and Enrichment[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2014, 50(8): 1008～1112
郑红,张晶,夏晓珊,顾静,王彬,韩鸿萍,王弋博. 表面铅(Ⅱ)印迹聚合物的制备及其分离富集性能研究[J]. 理化检验－化学分册, 2014, 50(8): 1008～1112
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参考文献
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【5】AHMED S A. Alumina physically loaded by thiosemicarbazide for selective preconcentration of mercury(Ⅱ) ion from natural water samples［J］. J Hazard Mater 2008,156:521-528.
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【7】冯银巧,周如金,唐玉斌,等.分子印迹技术在固相萃取中的应用［J］.理化检验-化学分册, 2011,47(1):130-133.
【8】李路娟,刘慧君,张磊.铅(Ⅱ)离子印迹聚合物的制备及其吸附性能的研究［J］.化学通报, 2011,74(6):539-544.
【9】李艳,康永锋,吴文惠,等.硅胶表面铜离子印迹聚合物的制备和性能研究［J］.化学研究与应用, 2012,24(6):873-878.
【10】ZHENG Hong, GAO Xiu-zhen. Preconcentration of trace aluminum(Ⅲ) ion using a nanometer-sized TiO2-silica composite modified with 4-aminophenylarsonic acid, and its determination by ICP-OES［J］. Microchimica Acta, 2011,175:225-231.
【2】KOMAREK J, CERVENKA R, RUZICKA T, et al. ET-AAS determination of aluminium in dialysis concentrates after continuous flow solvent extraction［J］. J Pharm Biomed Anal, 2007,45:504-511.
【3】ERDEMOGLU S B, PYRZYNISKA K, GUCER S. Speciation of aluminum in tea infusion by ion-exchange resins and flame AAS detection［J］. Anal Chim Acta, 2000,411:81-87.
【4】NARIN I, TUZEN M, SOYLAK M. Aluminium determination in environmental samples by graphite furnace atomic absorption spectrometry after solid phase extraction on Amberlite XAD-1180/pyrocatechol violet chelating resin［J］. Talanta, 2004,63:411-419.
【5】AHMED S A. Alumina physically loaded by thiosemicarbazide for selective preconcentration of mercury(Ⅱ) ion from natural water samples［J］. J Hazard Mater 2008,156:521-528.
【6】薛庆华.钯(Ⅱ)离子印迹聚合物的制备及其对钯(Ⅱ)离子的分离和富集性能［J］.理化检验-化学分册, 2009,45(7):29-32.
【7】冯银巧,周如金,唐玉斌,等.分子印迹技术在固相萃取中的应用［J］.理化检验-化学分册, 2011,47(1):130-133.
【8】李路娟,刘慧君,张磊.铅(Ⅱ)离子印迹聚合物的制备及其吸附性能的研究［J］.化学通报, 2011,74(6):539-544.
【9】李艳,康永锋,吴文惠,等.硅胶表面铜离子印迹聚合物的制备和性能研究［J］.化学研究与应用, 2012,24(6):873-878.
【10】ZHENG Hong, GAO Xiu-zhen. Preconcentration of trace aluminum(Ⅲ) ion using a nanometer-sized TiO2-silica composite modified with 4-aminophenylarsonic acid, and its determination by ICP-OES［J］. Microchimica Acta, 2011,175:225-231.
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