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学科主题: 物理化学
题名: Naked-eye sensor for rapid determination of mercury ion
作者: Liu, Jing1, 2;  Wu, Dapeng1;  Yan, Xiaohui1, 2;  Guan, Yafeng1
通讯作者: 吴大朋 ;  关亚风
关键词: Mercuric ion ;  Naked-eye ;  Colorimetric ;  Filtration
刊名: TALANTA
发表日期: 2013-11-15
DOI: 10.1016/j.talanta.2013.07.035
卷: 116, 页:563-568
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 1
项目归属: 105
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
资助者: 1,1
研究领域[WOS]: Chemistry
英文摘要: A naked-eye paper sensor for rapid determination of trace mercury ion in water samples was designed and demonstrated. The mercury-sensing rhodamine B thiolactone was immobilized in silica matrices and the silica matrices were impregnated firmly and uniformly in the filter paper. As water samples flow through the filter paper, the membrane color will change from white to purple red, which could be observed obviously with naked eye, when concentration of mercury ions equals to or exceeds 10 nM, the maximum residue level in drinking water recommended by U.S. EPA. The color change can also be recorded by a flatbed scanner and then digitized, reducing the detection limit of Hg2+ down to 1.2 nM. Moreover, this method is extremely specific for Hg2+ and shows a high tolerance ratio of interferent coexisting ions. The presence of Na+ (2 mM), K+ (2 mM), Fe3+ (0.1 mM), Zn2+ (0.1 mM), Mg2+ (0.1 mM), Ni2+ (50 mu M), Co2+ (50 mu M), Cd2+ (50 mu M), Pb2+ (50 mu M), Cu2+ (50 mu M) and Ag+ (3.5 mu M) did not interfere with the detection of Hg2+ (25 nM). Finally, the present method was applied in the detection of Hg2+ in mineral water, tap water and pond water. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: SOLID-PHASE EXTRACTION ;  FUNCTIONALIZED GOLD NANOPARTICLES ;  ANODIC-STRIPPING VOLTAMMETRY ;  ON-SITE DETECTION ;  AQUEOUS-SOLUTION ;  TRACE MERCURY ;  HG2+ ;  FLUORESCENT ;  CHEMOSENSORS ;  SPIROLACTAM
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000328176000083
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119232
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, Dalian Inst Chem Phys, Dept Instrumentat & Analyt Chem, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Liu, Jing,Wu, Dapeng,Yan, Xiaohui,et al. Naked-eye sensor for rapid determination of mercury ion[J]. TALANTA,2013,116:563-568.
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