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Electrochemiluminescence detection of methamphetamine based on a Ru(bpy) 3 2+ ‐doped silica nanoparticles/Nafion composite film modified electrode
Author(s) -
Cai Zhimin,
Lin Zhijie,
Chen Xiaomei,
Jia Tiantian,
Yu Ping,
Chen Xi
Publication year - 2009
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.1160
Subject(s) - electrochemiluminescence , nafion , microemulsion , nanoparticle , detection limit , materials science , electrode , electrochemistry , doping , composite number , analytical chemistry (journal) , nuclear chemistry , chemical engineering , nanotechnology , chemistry , chromatography , composite material , optoelectronics , pulmonary surfactant , engineering
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.