功能化多壁碳纳米管修饰玻碳电极测定沙丁胺醇  

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

作　　者：米芹[1] 王正武[1] 赵波[2] 陈昌云[3] 

机构地区：[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,上海200240 [2]南京师范大学化学与环境科学学院,江苏南京210097 [3]南京晓庄学院化学系,江苏南京210017

出　　处：《食品科学》2009年第20期343-346,共4页Food Science

基　　金：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)

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。A glassy carbon electrode modified by functionalized multi-wall carbon nanotubes （MWCNTs-COOH） film was prepared. Electrochemical behaviors ofsalbutamol 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.

关 键 词：碳纳米管 修饰电极 沙丁胺醇 循环伏安法 

分 类 号：O657.1[理学—分析化学]