食品科学 ›› 2009, Vol. 30 ›› Issue (20 ): 343-346.doi: 10.7506/spkx1002-6300-200920076

• 分析检测 • 上一篇    下一篇

功能化多壁碳纳米管修饰玻碳电极测定沙丁胺醇

米 芹1,王正武1,*,赵 波2,陈昌云3   

  1. 1.上海交通大学农业与生物学院食品科学与工程系,陆伯勋食品安全研究中心 2.南京师范大学化学与环境科学学院 3.南京晓庄学院化学系
  • 收稿日期:2009-06-20 出版日期:2009-10-15 发布日期:2010-12-29
  • 通讯作者: 王正武
  • 基金资助:

    上海市科委技术标准专项(08DZ0505000);上海市科委纳米科技专项(0852nm06200);
    国家自然科学基金项目(20676051)

Determination of Salbutamol Using Functionalized Multiwall Carbon Nanotubes Modified Glassy Carbon Electrode

MI Qin1,WANG Zheng-wu1,*,ZHAO Bo2,CHEN Chang-yun3   

  1. 1. BorLuh Food Safety Center, Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong
    University, Shanghai 200240, China;2. School of Chemical and Environmental Science, Nanjing Normal University,
    Nanjing 210097, China;3. Department of Chemistry, Nanjing Xiaozhuang University, Nanjing 210017, China
  • Received:2009-06-20 Online:2009-10-15 Published:2010-12-29
  • Contact: WANG Zheng-wu

摘要:

制备多壁碳纳米管修饰玻碳电极,应用循环伏安法研究沙丁胺醇在修饰电极上的电化学行为。结果表明,碳纳米管修饰电极对沙丁胺醇的氧化有良好的电催化活性,在最佳测试条件下,氧化峰电位负移至0.601V,比裸玻碳电极负移90mV,氧化峰电流与沙丁胺醇浓度在2.09×10-7~2.27×10-6mol/L范围内呈良好线性关系,检出限达1.9×10-7mol/L。该电极具有良好的重现性和稳定性。

关键词: 碳纳米管, 修饰电极, 沙丁胺醇, 循环伏安法

Abstract:

A glassy carbon electrode modified by functionalized multi-wall carbon nanotubes (MWCNTs-COOH) film was prepared. Electrochemical behaviors of salbutamol on the modified electrode were investigated by cyclic voltammetric (CV) method. Results indicated that the modified electrode with MWCNTs-COOH film exhibited an excellent electro-catalysis activity to salbutamol oxidation. All experimental parameters were optimized and the oxidation peak potential of salbutamol at the modified electrode was negatively shifted to 0.601 V under the optimal conditions, which also exhibited a negative shift approximately 90 mV compared to the naked grassy carbon electrode. An excellent linear relationship between oxidation peak current and salbutamol concentration in the range from 2.09×10-7 to 2.27×10-6 mol/L was observed. The detection limit was approximately 1.9 × 10-7 mol/L. Moreover, this electrode revealed excellent reproducibility and stability.

Key words: multi-wall carbonnanotube, modified electrode, salbutamol, cyclic voltammetric determination

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