期刊
TALANTA
卷 84, 期 3, 页码 900-904出版社
ELSEVIER
DOI: 10.1016/j.talanta.2011.02.024
关键词
Multi-channel sensor; Ferrocene; 8-Hydroxyqinoline; Screen-printed carbon electrode
资金
- National High Technology Research and Development Program of China (863 Project) [2008AAO6A406]
- Fundamental Research Funds for the Central Universities [WK1013002]
- National Natural Science Foundation of China [91027035]
- Shanghai Institutions of Higher Learning
A new sensing molecule 8-hydroxyquinoline ferrocenoate (Fc-Q) which combines ferrocene and 8-hydroxyquinoline moieties was synthesized and applied as a multi-channel sensor for the detection of Hg2+ ion. Fc-Q can coordinate with Hg2+ to give colorimetric, fluorescent and electrochemical responses. Upon complexation with Hg2+ ion, the characteristic absorption peak is red-shifted (Delta lambda = 45 nm), the fluorescent intensity is quenched at 303 nm, and the oxidation peak is cathodic shifted (Delta E-1/2 = -149 mV). Quantitatively analyzed Hg2+ ions at the range of ppb level could be achieved by electrochemical response. For the practical application of sensing Hg2+ in real world water. Fc-Q modified screen-printed carbon electrodes were obtained for facile, sensitive, and on-site analysis of Hg2+. (C) 2011 Elsevier B.V. All rights reserved.
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