Electrochemiluminescence detection of methamphetamine based on a Ru(bpy)32+‐doped silica nanoparticles/Nafion composite film modified electrode |
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| Authors: | Zhimin Cai Zhijie Lin Xiaomei Chen Tiantian Jia Ping Yu Xi Chen |
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| Institution: | 1. Department of Chemistry and Key Laboratory of Analytical Sciences of Ministry of Education, Xiamen University, Xiamen 361005, China;2. Fujian Research Institute of Metric Science, Fuzhou 350003, China;3. State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China |
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| Abstract: | An electrochemiluminescence (ECL) approach for methamphetamine determination was developed based on a glassy carbon electrode modified with a Ru(bpy)32+‐doped silica nanoparticles/Nafion composite film. The monodispersed nanoparticles, which were about 50 nm in size, were synthesized using the water‐in‐oil microemulsion method. The ECL results revealed that Ru(bpy)32+ doped in silica nanoparticles retained its original photo‐ and electrochemical properties. The ECL intensity was found to be proportional to methamphetamine concentration over the range from 1.0 × 10?7 to 1.0 × 10?5 mol L?1, and the detection limit was found to be 2.6 × 10?8 mol L?1. The proposed ECL approach was used to analyze the methamphetamine content in drugs. Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | electrochemiluminescence Ru(bpy)32+‐doped silica methamphetamine |
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