Les nanoparticules dans l'air, generation, detection et granulometrie

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  • Pergamon

    SOOZl-8502(97)00016-5

    J. Aerosol SC,. Vol. 28, No. 7, pp. 1357-1363, 1997 Published by Elsevier Science Ltd

    Prmted in Great Britam 0021.8502/97/$1700 + 0.00

    ABSTRACTS

    12BMES JOURNBES DETUDES SUR LES AfiROSOLS

    (12TH ANNUAL MEETING OF THE ASFERA ASSOCIATION FRANCAISE DETUDES ET DE RECHERCHES SUR

    LES AEROSOLS)

    4-5 December 1996, Paris

    LES NANOPARTICULES DANS LAIR, GENERATION: DETECTION ET GRANULOMETRIE

    Michel B. Attoui

    Laboratoire de Physique des Aerosols et Transfer& des Contaminations, Universite Paris XII, Avenue du General de Gaulle, Creteil

    Nanoaerosol (diameter below 10 nm) is present in the atmosphere with high concentrations. It is formed from the gas phase by homogeneous or heterogeneus condensation. Natural radioactive aerosol (Randon progeny) has also nanometric dimensions and even subnanometric. We found the nanometric aerosol also in furnaces, combustion, chemical reactors for synthetics materials, nanostructures, ceramics, etc. In this paper we review the nanometric aerosol generators, and their methods of detection.

    VERS UNE MAITRISE DE LA POLLUTION DE LATR SUR LES LIGNES DU METRO PARISIEN

    S. Mazoue,* + D. Gabay, * A. Renoux+ and M. B. Attoui+

    * RATP, Dtpartement des Projets, LAC A67, 54 quai de la Rap&e, 75599 Paris Cedex 12 LPATC, UFR Sciences, Universite Paris XII, 61, av. du General de Gaulle, 94010 Crtteil

    Since 1970, RATP has been concerned with problems facing comfortable environment due to a notable increase of temperature in the underground. An important ventilation program has been realized in the 1980s. Then, new questions about the air quality appeared. So several actions have been attempted by RATP: characterisation of odours, measurements, creation of an air quality monitoring network (SQUALES project), But this stage must come with a research on technical solutions, in order to reduce the undergrounds pollution. This paper gives the results of RATPs researches on technical solutions and it describes a new software which is able to give the spread of gaseous products in the underground.

    CARACTERISATION DES AEROSOLS DIESEL DUN AUTOBUS R312 ETUDE COMPARATIVE DE CARBURANTS PLUS OU MOINS DESULFURES

    C. Le Guern,* C. Parfait,+ A. Renoux* and M. Attoui*

    * Laboratoire de Physique des Aerosols et de Transfert des Contaminations, Universite Paris XII, Creteil, Faculte des sciences, Avenue du General de Gaulle, 94010 Creteil Cedex

    RATP, Departement Environnement et Securite, Di!E/EQA-13, rue Jules Valles 75011, Paris

    A few years ago, the diesel engine was still considered as relatively clean. Today potential risks, tied to aerosols, bring us to know, more exactly, their granulometry and chemical kind. This study consists of diesel aerosols characterization of a laboratory bus fitted out with a constant volume sampler system, and to show the influence of the use of a more or less unsulphured fuel. The tested fuels are diesel oil, T.B.T.S. and a Finnish fuel which contain 0.2, 0.05 and 0.01% of sulphur, respectively. The results show us the influence of a low level sulphured fuel on the

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