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Citation: YANG Chun-Hai, ZHANG Sheng-Hui, YU Ai-Nong, HU Chen-Guo, HU Sheng-Shui. Electrochemical Behavior of Hymecromone and Its Voltammetric Determination at Congo Red-functionalized Water-soluble Multi-walled Carbon Nanotube Film Electrode[J]. Chinese Journal of Applied Chemistry, ;2008, 25(4): 449-454. shu

Electrochemical Behavior of Hymecromone and Its Voltammetric Determination at Congo Red-functionalized Water-soluble Multi-walled Carbon Nanotube Film Electrode

1.
a Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Hubei Institute for Nationalities, Enshi 445000;
2.
b Department of Chemistry, Wuhan University, Wuhan

Corresponding author: YANG Chun-Hai,
Received Date: 27 May 2007
Available Online: 28 August 2007
Fund Project: 湖北省自然科学基金(2004ABA235) (2004ABA235)湖北省教育厅重点项目(D200629004)资助项目 (D200629004)

Fabrication of water-soluble multi-wall carbon nanotubes (MWNTs-CR) film modified glassy carbon electrode (MWNTs-CR/GCE) was carried out via the non-covalent modification of congo red for MWNTs.The electrochemical behavior of hymecromone at MWNTs-CR/GCE was investigated by linear sweep voltammetry (LSV),successive cyclic voltammetry and chronocoulometry.Compared with that at bare GCE,the electrochemical response of hymecromone at MWNTs-CR/GCE was greatly enhanced,which was further amplified by the addition of trace cetyltrimethylammonium bromide (CTAB) in solution.In a range of 8.0×10^-8~4.0×10^-6 mol/L,the oxidation peak current was linear with hymecromone concentration and a low detection limit of 2.0×10^-8 mol/L was obtained for 300 s accumulation at open circuit.This method was applied to determine the content of hymecromone in the compound hymecromone tablet sample,the results were satisfactory.
- water-soluble carbon nanotubes (MWNTs-CR) film,
- hymecromone,
- chemically modified electrode,
- surfactants
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