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题名: Novel Hg2+-imprinted polymers based on thymine-Hg2+-thymine interaction for highly selective preconcentration of Hg2+ in water samples
作者: Xu, Shoufang1, 4;  Chen, Lingxin1;  Li, Jinhua1;  Guan, Yafeng2;  Lu, Hongzhi3
关键词: Ionic imprinted polymers ;  Mercury ion ;  T-Hg-T ;  Solid-phase extraction
刊名: JOURNAL OF HAZARDOUS MATERIALS
发表日期: 2012-10-30
DOI: 10.1016/j.jhazmat.2012.08.058
卷: 237, 页:347-354
收录类别: SCI
文章类型: Article
类目[WOS]: Engineering, Environmental ;  Engineering, Civil ;  Environmental Sciences
研究领域[WOS]: Engineering ;  Environmental Sciences & Ecology
英文摘要: A novel functional monomer T-IPTS, 3-isocyanatopropyltriethoxysilane (IPTS) bearing thymine (T) bases, was synthesized for imprinting Hg2+. Then a novel Hg2+ ionic imprinted polymers (IIPs) based on thymine-Hg2+-thymine (T-Hg2+-T) interactions, i.e. Hg-IIPs-T, were prepared by sol-gel process for the first time in this work. The Hg-IIPs-T exhibited excellent selectivity towards Hg2+ over Cd2+, Zn2+ Pb2+, Co2+, Mn2+, Mg2+ and Ca2+, due to the specific T-Hg2+-T interactions with high selectivity and high affinity. Accordingly, Hg-IIPs-T were used as solid-phase extraction (SPE) sorbents for preconcentration of trace Hg2+ in water samples, and satisfactory recoveries ranging from 95.2 to 116.3% were obtained. Also, under optimized conditions, preconcentration factor and detection limit were achieved of 200 and 0.03 mu g L-1, respectively. The IIPs-T-SPE proved to be a rapid and high-effective cleanup and enrichment method for trace Hg2+ in water samples. More importantly, these results indicated that devising and synthesizing new functional monomers tailor-made for template would become a general promising way to improve the selectivity and stability of IIPs. 2012 Elsevier B.V. All rights reserved.
关键词[WOS]: SOLID-PHASE EXTRACTION ;  MOLECULARLY IMPRINTED POLYMERS ;  ATOMIC-ABSORPTION-SPECTROMETRY ;  ELECTROCHEMICAL SENSOR ;  SPECIATION ANALYSIS ;  GOLD NANOPARTICLES ;  AQUEOUS-SOLUTION ;  MERCURY ;  IONS ;  RECOGNITION
语种: 英语
WOS记录号: WOS:000310257100043
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142926
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Instrumentat & Analyt Chem, Key Lab Separat Sci Analyt Chem CAS, Dalian 116023, Peoples R China
3.Linyi Univ, Sch Chem & Chem Engn, Linyi 276005, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Xu, Shoufang,Chen, Lingxin,Li, Jinhua,et al. Novel Hg2+-imprinted polymers based on thymine-Hg2+-thymine interaction for highly selective preconcentration of Hg2+ in water samples[J]. JOURNAL OF HAZARDOUS MATERIALS,2012,237:347-354.
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