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

doi:10.7506/spkx1002-6300-200920076

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

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

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

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

Abstract

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

CLC Number:

O657.1

MI Qin1，WANG Zheng-wu1,*，ZHAO Bo2，CHEN Chang-yun3. Determination of Salbutamol Using Functionalized Multiwall Carbon Nanotubes Modified Glassy Carbon Electrode[J]. FOOD SCIENCE, 2009, 30(20 ): 343-346.

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

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