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  • Title: Electrochemiluminescence detection of methamphetamine based on a Ru(bpy)₃(2+)-doped silica nanoparticles/Nafion composite film modified electrode.
    Author: Cai Z, Lin Z, Chen X, Jia T, Yu P, Chen X.
    Journal: Luminescence; 2010; 25(5):367-72. PubMed ID: 19757496.
    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.
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