Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| Highly sensitive and selective voltammetric detection of mercury(II) using an ITO electrode modified with 5-methyl-2-thiouracil, graphene oxide and gold nanoparticles | |
Zhou, Na; Chen, Hao; Li, Jinhua ; Chen, Lingxin
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| 发表期刊 | MICROCHIMICA ACTA
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| ISSN | 0026-3672 |
| 2013-04-01 | |
| 卷号 | 180期号:5-6页码:493-499 |
| 关键词 | Mercury Ion 5-methyl-2-thiouracil Graphene Oxide Gold Nanoparticle |
| 产权排序 | [Zhou, Na; Chen, Hao; Li, Jinhua; Chen, Lingxin] Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res YIC,YICCAS, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China |
| 通讯作者 | Chen, LX (reprint author), Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res YIC,YICCAS, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China. lxchen@yic.ac.cn |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 英文摘要 | We have developed an electrochemical sensor for highly selective and sensitive determination of Hg(II). It is based on the specific binding of 5-methyl-2-thiouracil (MTU) and Hg(II) to the surface of an indium tin oxide (ITO) electrode modified with a composite made from graphene oxide (GO) and gold nanoparticles (AuNPs). This leads to a largely enhanced differential pulse voltammetric response for Hg(II). Following optimization of the method, a good linear relationship (R = 0.9920) is found between peak current and the concentration of Hg(II) in the 5.0-110.0 nM range. The limit of detection (LOD) is 0.78 nM at a signal-to-noise ratio of 3. A study on the interference by several metal ions revealed no interferences. The feasibility of this method was demonstrated by the analyses of real water samples. The LODs are 6.9, 1.0 and 1.9 nM for tap water, bottled water and lake water samples, respectively, and recoveries for the water samples spiked with 8.0, 50.0 and 100.0 nM were 83.9-96.8 %, with relative standard deviations ranging from 3.3 % to 5.2 %.; We have developed an electrochemical sensor for highly selective and sensitive determination of Hg(II). It is based on the specific binding of 5-methyl-2-thiouracil (MTU) and Hg(II) to the surface of an indium tin oxide (ITO) electrode modified with a composite made from graphene oxide (GO) and gold nanoparticles (AuNPs). This leads to a largely enhanced differential pulse voltammetric response for Hg(II). Following optimization of the method, a good linear relationship (R = 0.9920) is found between peak current and the concentration of Hg(II) in the 5.0-110.0 nM range. The limit of detection (LOD) is 0.78 nM at a signal-to-noise ratio of 3. A study on the interference by several metal ions revealed no interferences. The feasibility of this method was demonstrated by the analyses of real water samples. The LODs are 6.9, 1.0 and 1.9 nM for tap water, bottled water and lake water samples, respectively, and recoveries for the water samples spiked with 8.0, 50.0 and 100.0 nM were 83.9-96.8 %, with relative standard deviations ranging from 3.3 % to 5.2 %. |
| 文章类型 | Article |
| 资助机构 | Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, the National Natural Science Foundation of China [21275158]; 100 Talents Program of the Chinese Academy of Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | SCREEN-PRINTED ELECTRODES ; SENSING PLATFORM ; HG2+ ; SAMPLES ; SENSOR ; ION ; PRECONCENTRATION ; SPECTROMETRY ; SPECIATION ; FILMS |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000316404000022 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/6622 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | Chinese Acad Sci, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res YIC,YICCAS, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Na,Chen, Hao,Li, Jinhua,et al. Highly sensitive and selective voltammetric detection of mercury(II) using an ITO electrode modified with 5-methyl-2-thiouracil, graphene oxide and gold nanoparticles[J]. MICROCHIMICA ACTA,2013,180(5-6):493-499. |
| APA | Zhou, Na,Chen, Hao,Li, Jinhua,&Chen, Lingxin.(2013).Highly sensitive and selective voltammetric detection of mercury(II) using an ITO electrode modified with 5-methyl-2-thiouracil, graphene oxide and gold nanoparticles.MICROCHIMICA ACTA,180(5-6),493-499. |
| MLA | Zhou, Na,et al."Highly sensitive and selective voltammetric detection of mercury(II) using an ITO electrode modified with 5-methyl-2-thiouracil, graphene oxide and gold nanoparticles".MICROCHIMICA ACTA 180.5-6(2013):493-499. |
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