CJCU

Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (11): 2165.

• Articles • Previous Articles     Next Articles

Electrochemical Behavior of Rutin in [bmim]BF4 Ionic Liquid and Influence Factors

DONG She-Ying1*, WANG Yuan1, HUANG Ting-Lin1, ZHOU Yuan-Zhen1, ZHENG Jian-Bin2   

  1. 1. College of Sciences Xi′an University of Architecture & Technology, Xi′an 710055, China;
    2. Institute of Analytical Science, Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Northwest University, Xi′an 710069, China
  • Received:2009-03-23 Online:2009-11-10 Published:2009-11-10
  • Contact: DONG She-Ying. E-mail: dongsyy@126.com
  • Supported by:

    陕西省教育厅基金(批准号: 2009JK515)资助.

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Abstract:

In the medium hydrophilic ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate([bmim]BF4), the electrochemical behaviors of rutin(Rt) were studied by linear sweep voltammetry and cyclic voltammetry. The influences of scan rate, accumulation time and temperature on the electrochemical cha-racteristics of Rt were also discussed. The experimental results indicated that the electrode process of Rt was a quasi-reversible process with absorption, and the electron transfer number was 2. The standard rate constant ks of Rt was 0.126 s-1 in [bmim]BF4. The effects of water or ethanol on the electrochemical behavior of Rt were investigated systematically. With the increasing of amount of water or ethanol, the peak potential of Rt shifted negatively and the peak current increased, and water affected the system more obviously than ethanol. In the [bmim]BF4-H2O system, a linear dependence of oxidation current on Rt concentration was obtained in the range of 4.0×10-5—1.4×10-4 mol/L, the detection limit was 1.0×10-5 mol/L. This method could be applied to the determination of rutin content.

Key words: Voltammetry; Electrochemical behavior; Ionic liquid; Rutin

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