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Findings in the Area of Nanoparticles Reported from Chinese Academy of Sciences

May 23, 2014

By a News Reporter-Staff News Editor at Science Letter -- Researchers detail new data in Nanoparticles. According to news reporting originating in Beijing, People's Republic of China, by NewsRx journalists, research stated, "A sensitive electrochemiluminescence (ECL) sensor for melamine analysis was fabricated based on Ru(bpy)(3)(2+)-doped silica (Ru(bpy)(3)(2+)@SiO2) nanoparticles and graphene composite. Spherical Ru(bpy)(3)(2+)@SiO2 nanoparticles with uniform size about 55nm were prepared by the reverse microemulsion method."

The news reporters obtained a quote from the research from the Chinese Academy of Sciences, "Since per Ru(bpy)(3)(2+)@SiO2 nanoparticle encapsulated a great deal of Ru(bpy)(3)(2+), the ECL intensity has been greatly enhanced, which resulted in high sensitivity. Due to its extraordinary electric conductivity, graphene improved the conductivity and accelerated the electron transfer rate. In addition, graphene could work as electronic channel improving the efficient luminophor amount participating in the ECL reaction, which further enhanced the ECL signal."

According to the news reporters, the research concluded: "This proposed sensor was used to melamine analysis and the ECL intensity was proportional to logarithmic melamine concentration range from 1 x 10(-13) M to 1 x 10(-8) M with the detect limit as low as 1 x 10(-13) M. In application to detect melamine in milk, satisfactory recoveries could be obtained, which indicated this sensor having potential application in melamine analysis in real samples."

For more information on this research see: Enhanced electrochemiluminescence based on Ru(bpy)(3)(2+)-doped silica nanoparticles and graphene composite for analysis of melamine in milk. Analytica Chimica Acta, 2014;824():57-63. Analytica Chimica Acta can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Analytica Chimica Acta -

Our news correspondents report that additional information may be obtained by contacting L.M. Zhou, Univ Chinese Academy Sci, Beijing, People's Republic of China. Additional authors for this research include J.S. Huang, L. Yang, L.B. Li and T.Y. You (see also Nanoparticles).

Keywords for this news article include: Asia, Beijing, Nanotechnology, Emerging Technologies, People's Republic of China

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Source: Science Letter

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