期刊
ANALYST
卷 136, 期 2, 页码 374-378出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0an00765j
关键词
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资金
- State Key Laboratory of Fine Chemicals, Dalian University of Technology
- Education Ministry and National Natural Science Foundation of China [21072024, 20872012]
- Education Department of Liaoning Province [2008S040]
- Specialized Research Fund for the Doctoral Program of Higher Education [200801411004]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT0711]
- State Key Laboratory of Bioelectronics, Southeast University
- China Postdoctoral Science Foundation [082103]
The electrochemiluminescence (ECL) of Ru(bpy)(3)(2+) at bare and single-wall carbon nanotube (SWNT) modified glassy carbon (GC) electrodes has been employed for the determination of melamine for the first time, giving a linear response (R-2 0.99682) for melamine concentration from 1.0 x 10(-10) to 1.0 x 10(-5) M at a bare GC electrode in pH 10 borate buffer, and the detection limit is 1.0 x 10(-10) M. However, the detection limit can be reduced further to 1.0 x 10(-13) M after modification of the GC electrode by SWNTs. This is much lower compared to other detection methods. The proposed method was applied to the determination of melamine added to a commercial milk sample; the recovery is quite satisfactory with good reproducibility and stability. All of these results provide the possibility of developing a novel ECL detection method for melamine.
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