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Reports Summarize Nanoparticles Findings from Jilin University (Rapid and highly-sensitive melamine sensing based on the efficient inner filter...

September 9, 2014



Reports Summarize Nanoparticles Findings from Jilin University (Rapid and highly-sensitive melamine sensing based on the efficient inner filter effect of Ag nanoparticles on the fluorescence of eco-friendly ZnSe quantum dots)

By a News Reporter-Staff News Editor at Physics Week -- Fresh data on Nanoparticles are presented in a new report. According to news reporting originating from Changchun, People's Republic of China, by VerticalNews correspondents, research stated, "A very practical and competitive sensing strategy for melamine has been developed based on the efficient inner filter effect (IFE) of Ag nanoparticles (AgNPs) on the fluorescence of eco-friendly ZnSe quantum dots (QDs). The fluorescence emission of ZnSe QDs could be quenched significantly by AgNPs via IFE, which resulted in a fluorescence 'off-state."

Our news editors obtained a quote from the research from Jilin University, "The presence of melamine could induce the aggregation of AgNPs and modulate the IFE process. Thus the IFE-decreased fluorescence could gradually recover in a melamine concentration-dependent way, thereby achieving the fluorescence 'turn-on' sensing for melamine. The detection mechanism was clearly illustrated and the influences of various experimental conditions were also investigated. Under the optimal conditions, a decent linear relationship for melamine was obtained in the range from 1.0 to 36 mu g L-1, and the detection limit was as low as 0.11 mu g L-1. The IFE-based strategy was successfully applied for melamine analysis in raw milk and egg samples and satisfactory results have been achieved."

According to the news editors, the research concluded: "Therefore, it is very promising to use this simple, rapid, sensitive and eco-friendly method for on-site and real-time screening of melamine."

For more information on this research see: Rapid and highly-sensitive melamine sensing based on the efficient inner filter effect of Ag nanoparticles on the fluorescence of eco-friendly ZnSe quantum dots. Sensors and Actuators B-Chemical, 2014;202():1175-1182. Sensors and Actuators B-Chemical can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland.

The news editors report that additional information may be obtained by contacting X.Y. Cao, Jilin University, Dept. of Food Qual & Safety, Changchun 130062, People's Republic of China. Additional authors for this research include F. Shen, M.W. Zhang and C.Y. Sun.

Keywords for this news article include: Changchun, People's Republic of China, Asia, Emerging Technologies, Nanoparticle, Nanoparticles, Nanotechnology, Quantum Dots, Quantum Physics

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Physics Week


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