Méthode de caractérisation physico-chimique pour le suivi et la sécurisation des procédés de fabrication des nanoparticules

Abstract : Since a few years ago, the nanotechnology industry has extended and the nanoparticle production has become very important. Thus the European research program Nanosafe2 has been initialised in order to assess the risk related to this production. Accidental and toxicological risks have been the main topics of interest. Indeed, the small size of these particles generates some confinement and protection issues. Moreover their health impact is poorly characterised. Our aim is to develop a method that is able to characterise the physical and chemical properties of nanoparticles in air matrix. In order to measure these particle characteristics, we have coupled two methods: the LIBS techniques (Laser Induced Breakdown Spectroscopy) based on a plasma spectroscopy method and an electrical mobility analysis implying the use of a DMA (Differential Mobility Analyser). The use of both of these techniques allows us to know direct information about the size, the concentration and the chemical composition of particles in air matrix. Some preliminary studies have been carried out on polydisperse aerosols, then monodisperse aerosols have been analysed, down to sizes around 40 nm. These first results show the ability of this kind of tool for on line nanoparticle chemical characteristic measurements with a limit concentration of a few micrograms per cubic meter. In addition, an other application is pointed out. The ability of LIBS in monitoring nanoparticle production process has indeed been demonstrated with in situ implementation.
Mots-clés : LIBS NANOPARTICULES
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  • HAL Id : ineris-00973280, version 1
  • INERIS : EN-2008-022

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Tanguy Amodeo, Christophe Dutouquet, Michel Attoui, François Tenegal, Emeric Frejafon, et al.. Méthode de caractérisation physico-chimique pour le suivi et la sécurisation des procédés de fabrication des nanoparticules. 23. Congrès Français sur les Aérosols (CFA 2008), Jan 2008, Paris, France. pp.NC. ⟨ineris-00973280⟩

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