NDLI: Mise au point d’un système de collecte d 'aérosols nanométriques pour l'analyse biologique

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Mise au point d’un système de collecte d 'aérosols nanométriques pour l'analyse biologique

Content Provider	Semantic Scholar
Author	Galbrun, Ernest Glière, Alain Fouillet, Yves Achard, Jean-Luc Rouillon, Florence Péponnet, Christine
Copyright Year	2007
Abstract	CEA Grenoble : Département pour la Recherche Technologique – Léti 17, rue des Martyrs 38054 Grenoble Cedex 9 CEA Grenoble : Département pour la Recherche Technologique – Liten 3 INPG Laboratoire des Écoulements Géophysiques et Industriels ernest.galbrun@cea.fr Résumé : Nous présentons ici une nouvelle méthode de collecte des aérosols, pouvant capturer efficacement et indépendamment de leur taille toutes sortes d’aérosol s, dont la taille peut varier de quelques dizaines de nanomètre à quelques microns. Le système de coll ct nsiste en un électrofiltre standard, dans lequel une petite quantité de vapeur d’eau est injectée au cœur de l’écoulement d’air, ce qui permet d’augmenter significativement le r endement pour la collecte des particules nanométriques. Cette méthode a l’intérêt majeur de prés nter un bon rendement pour une gamme très étendue de taille de particules (20 nm à 2 μm), et de concentrer les particules collectées dans un petit volume d’eau, particulièrement adapté à une analyse ultérieure par un microsystème. Abstract : We present a new concept for an airborne particle collector, capable of c apturing efficiently and independently of size, any kind of aerosol ranging from a fe w tens of nanometres to a few microns. The collection device consists in a standard electr ostatic precipitator, where the particle are charged via an electrical corona discharge and collected s ubsequently due to the electrostatic forces. In addition, a small amount of water vapour is injected in the incoming air flow improving greatly the yield for the collection of nanoscale part icles. This method has the valuable advantage of having a very good yield for a wide range of particle si ze (20 nm to 2 μm), and of concentrating the particles in a very small volume of water , particularly adapted to continuous flow monitoring by fluidic microsystems.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://documents.irevues.inist.fr/bitstream/handle/2042/16607/CFM2007-0571.pdf?sequence=1
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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