期刊
TALANTA
卷 82, 期 5, 页码 1853-1857出版社
ELSEVIER
DOI: 10.1016/j.talanta.2010.07.083
关键词
Rutin; Ionic liquid; Carbon ceramic electrode; Cyclic voltammetry; Differential pulse voltammetry
资金
- Taishan Scholar Foundation of Shandong Province [ts20070713]
- Natural Science Foundation of Shandong Province [ZR2009BM022]
- Special Foundation for the Postdoctoral Innovative Project of Shandong Province [200902027]
An ionic liquid (IL) modified carbon ceramic electrode (CCE) was designed and further used for the voltarnmetric detection of rutin in this paper. IL-CCE was prepared by mixing graphite powder with 1-butyl-3-methylimidazolium tetrafluoroborate (EMIMBF4) doped silicate sol-gel matrix together and further characterized by different methods. Then electrochemical behaviors of rutin on the IL-CCE were investigated by different electrochemical methods such as cyclic voltamrnetry and differential pulse voltammetry (DPV). Due to the presence of IL in the CCE, an enhanced electrochemical response of rutin appeared with a pair of well-defined redox peaks in pH 2.5 phosphate buffer solution (PBS). The electrochemical behaviors of rutin on the IL-CCE were carefully investigated. Under the selected conditions the oxidation peak currents exhibited good linear relationship with the rutin concentration in the range from 0.3 to 100.0 mu mol/L with the detection limit as 0.09 mu mol/L (3 sigma). The proposed method was further applied to the rutin tablets sample detection with satisfactory results. (C) 2010 Elsevier B.V. All rights reserved.
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