Electrochemiluminescence detection of methamphetamine based on a Ru(bpy)32+-doped silica nanoparticles/Nafion composite film modified electrode

✍ Scribed by Zhimin Cai; Zhijie Lin; Xiaomei Chen; Tiantian Jia; Ping Yu; Xi Chen

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 538 KB
• Volume: 25
• Category: Article
• ISSN: 1522-7235
• DOI: 10.1002/bio.1160

✦ Synopsis

Abstract

An electrochemiluminescence (ECL) approach for methamphetamine determination was developed based on a glassy carbon electrode modified with a Ru(bpy)~3~^2+^‐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)~3~^2+^ 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.