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Nanomaterial/Ionophore-Based Electrode for Anodic Stripping Voltammetric Determination of Lead: An Electrochemical Sensing Platform toward Heavy Metals
Pan, Dawei1; Wang, Yuane1; Chen, Zhaopeng1; Lou, Tingting1; Qin, Wei1,2
2009-06-15
发表期刊ANALYTICAL CHEMISTRY
卷号81期号:12页码:5088-5094
产权排序Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev, Environm Chem Lab;Yantai Univ, Sch Oceanol
摘要A novel nanomaterial/ionophore-modified glassy carbon electrode for anodic stripping analysis of lead (Pb2+) is described. Nanosized hydroxyapatite (NHAP) with width of 20-25 mn and length of 50-100 nm has been prepared and used to improve the sensitivity for detection of Pb2+ because it provides unique three-dimensional network structure and has strong adsorption ability toward Ph2+. An ionophore, usually used in ion-selective electrodes, is utilized here for its excellent selectivity toward Pb2+. Nafion, a cation-exchange polymer, is employed as the conductive matrix in which NHAP and the ionophore can be tightly attached to the electrode surface. Such a designed NHAP/ionophore/Nafion-modified electrode shows remarkably improved sensitivity and selectivity to Pb2+. The electrode has a linear range of 5.0 nM to 0.8 mu M with a 10 min accumulation time at open-circuit potential. The sensitivity and detection limit of the proposed sensor are 13 mu A/mu M and 1.0 nM, respectively. Interference from other heavy metal ions such as Cd2+, Cu2+, and Hg2+ associated with lead analysis can be effectively diminished. The practical application of the proposed sensor has been carried out for determination of trace levels of Pb2+ in real water samples.; A novel nanomaterial/ionophore-modified glassy carbon electrode for anodic stripping analysis of lead (Pb(2+)) is described. Nanosized hydroxyapatite (NHAP) with width of 20-25 mn and length of 50-100 nm has been prepared and used to improve the sensitivity for detection of Pb(2+) because it provides unique three-dimensional network structure and has strong adsorption ability toward Ph(2+). An ionophore, usually used in ion-selective electrodes, is utilized here for its excellent selectivity toward Pb(2+). Nafion, a cation-exchange polymer, is employed as the conductive matrix in which NHAP and the ionophore can be tightly attached to the electrode surface. Such a designed NHAP/ionophore/Nafion-modified electrode shows remarkably improved sensitivity and selectivity to Pb(2+). The electrode has a linear range of 5.0 nM to 0.8 mu M with a 10 min accumulation time at open-circuit potential. The sensitivity and detection limit of the proposed sensor are 13 mu A/mu M and 1.0 nM, respectively. Interference from other heavy metal ions such as Cd(2+), Cu(2+), and Hg(2+) associated with lead analysis can be effectively diminished. The practical application of the proposed sensor has been carried out for determination of trace levels of Pb(2+) in real water samples.
通讯作者Qin, W, Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev, Environm Chem Lab, Yantai 264003, Peoples R China
关键词Carbon-paste Electrode Screen-printed Electrodes Functionalized Mesoporous Silica Mercury Film Electrode Composite Electrodes Natural-waters Flow-injection Tap Water Trace Cadmium
作者部门环境化学实验室
学科领域Chemistry ; Analytical
项目资助者Chinese Academy of Sciences [KZCX2-YW-410]; National Natural Science Foundation of China [40776058]; National 863 High Technology Project of the Ministry of Science and Technology of China [2007AA09Z103]; Department of Science and Technology of Shandong P
收录类别SCI
关键词[WOS]CARBON-PASTE ELECTRODE ; SCREEN-PRINTED ELECTRODES ; FUNCTIONALIZED MESOPOROUS SILICA ; MERCURY FILM ELECTRODE ; COMPOSITE ELECTRODES ; NATURAL-WATERS ; FLOW-INJECTION ; TAP WATER ; TRACE ; CADMIUM
文章类型Article
语种英语
WOS研究方向Chemistry
WOS记录号WOS:000266969700054
引用统计
被引频次:90[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/3440
专题环境化学实验室
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev, Environm Chem Lab, Yantai 264003, Peoples R China
2.Yantai Univ, Sch Oceanol, Yantai 264005, Peoples R China
第一作者单位中国科学院烟台海岸带研究所
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GB/T 7714
Pan, Dawei,Wang, Yuane,Chen, Zhaopeng,et al. Nanomaterial/Ionophore-Based Electrode for Anodic Stripping Voltammetric Determination of Lead: An Electrochemical Sensing Platform toward Heavy Metals[J]. ANALYTICAL CHEMISTRY,2009,81(12):5088-5094.
APA Pan, Dawei,Wang, Yuane,Chen, Zhaopeng,Lou, Tingting,&Qin, Wei.(2009).Nanomaterial/Ionophore-Based Electrode for Anodic Stripping Voltammetric Determination of Lead: An Electrochemical Sensing Platform toward Heavy Metals.ANALYTICAL CHEMISTRY,81(12),5088-5094.
MLA Pan, Dawei,et al."Nanomaterial/Ionophore-Based Electrode for Anodic Stripping Voltammetric Determination of Lead: An Electrochemical Sensing Platform toward Heavy Metals".ANALYTICAL CHEMISTRY 81.12(2009):5088-5094.
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