高等学校化学学报

高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (11): 2165.

• 研究论文 • 上一篇    下一篇

芦丁在离子液体[bmim]BF4中的电化学行为及其影响因素

董社英1, 王远1, 黄廷林1, 周元臻1, 郑建斌2   

  1. 1. 西安建筑科技大学理学院, 西安 710055;
    2. 西北大学分析科学研究所, 陕西省电分析化学重点实验室, 西安 710069
  • 收稿日期:2009-03-23 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 董社英, 女, 博士, 教授, 主要从事电化学分析研究. E-mail: dongsyy@126.com
  • 基金资助:

    陕西省教育厅基金(批准号: 2009JK515)资助.

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.

PDF (PC)

摘要：

采用线性扫描伏安法和循环伏安法研究了芦丁在亲水性离子液体1-丁基-3-甲基四氟硼酸盐([bmim]BF4)中的电化学行为, 讨论了扫描速度、富集时间及温度等因素对其电化学行为的影响. 结果表明, 芦丁在[bmim]BF4中的电极过程是一个受吸附控制的准可逆过程, 电子转移数为2, 标准速率常数ks=0.126 s-1. 同时, 分别考察了水及乙醇对芦丁氧化还原特性的影响, 结果发现, 随着水或乙醇含量的增加, 芦丁的峰电位负移, 峰电流增加, 且水的影响比乙醇的影响明显. 在离子液体-水体系中, 芦丁的峰电流与浓度在4.0×10-5～1.4×10-4 mol/L范围内呈良好的线性关系, 检出限为1.0×10-5 mol/L, 有望用于芦丁含量的分析测定.

关键词: 伏安法; 电化学行为; 离子液体; 芦丁

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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