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题名: Preparation of core-shell magnetic ion-imprinted polymer for selective extraction of Pb(II) from environmental samples
作者: Zhang, Minglei ; Zhang, Zhaohui ; Liu, Yunan ; Yang, Xiao ; Luo, Lijuan ; Chen, Jutao ; Yao, Shouzhuo
刊名: CHEMICAL ENGINEERING JOURNAL
出版日期: 2011-12-15
卷号: 178, 期号:*, 页码:443—450
中文摘要: A novel magnetic ion-imprinted polymer (Fe(3)O(4)@SiO(2)@IIP) was synthesized by using 3-(2-aminoethylamino)propyltrimethoxysilane (AAPTS) as the functional monomer, tetraethylorthosilicate (TEOS) as the cross-linker and Pb(II) as the template and evaluated for selective extraction of Pb(II) from environmental sample by magnetic solid phase extraction (M-SPE) procedure. The factors affecting separation and preconcentration of the target heavy metals involving pH, eluting solvent and sample volume were studied in detail. Under the optimized experimental conditions, the kinetics adsorption and adsorption capacity of the Fe(3)O(4)@SiO(2)@IIP toward Pb(II) were estimated. The results indicated that the adsorption mechanism is corresponding with the second-order adsorption process with correlation coefficient (r(2) = 0.990), and the maximum adsorption capacity is 19.61 mgg(-1). The relative selectivity factor (beta) values of Pb(II)/Cu(II), Pb(II)/Zn(II), Pb(II)/Cd(II) and Pb(II)/Hg(II) are 7.41, 6.76, 3.75 and 6.39, respectively. The Fe(3)O(4)@SiO(2)@IIP was applied for extracting and detecting of Pb(II) in real environmental samples combined with atomic adsorption spectrometer successfully with high recoveries of 98.0%. (C) 2011 Elsevier B.V. All rights reserved.
部门归属: 生态环境研究中心
WOS记录号: WOS:000299025500054
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/6959
Appears in Collections:环境水质学国家重点实验室_期刊论文

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Zhang, Minglei; Zhang, Zhaohui; Liu, Yunan; Yang, Xiao; Luo, Lijuan; Chen, Jutao; Yao, Shouzhuo.Preparation of core-shell magnetic ion-imprinted polymer for selective extraction of Pb(II) from environmental samples,CHEMICAL ENGINEERING JOURNAL,2012,178():443—450
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