title: Fast changes in chemical composition and size distribution of fine particles during the near-field transport of industrial plumes.
abstract: Aerosol sampling was performed inside the chimneys and in the close environment of a FeMn alloys manufacturing plant. The number size distributions show a higher abundance of ultrafine aerosols (10-100 nm) inside the plume than upwind of the plant, indicating the emissions of nanoparticles by the industrial process. Individual analysis of particles collected inside the plume shows a high proportion of metal bearing particles (Mn-/Fe-) consisting essentially of internally mixed aluminosilicate and metallic compounds. These particles evolve rapidly (in a few minutes) after emission by adsorption of VOC gas and sulfuric acid emitted by the plant but also by agglomeration with pre-existing particles. At the moment, municipalities require a monitoring of industrial emissions inside the chimneys from manufacturers. However those measures are insufficient to report such rapid changes in chemical composition and thus to evaluate the real impact of industrial plumes in the close environment of plants (when those particles leave the industrial site). Consequently, environmental authorities will have to consider such fast evolutions and then to adapt future regulations on air pollution sources.
authors.affiliation: Université du Littoral Côte d'Opale, Laboratoire de Physico-Chimie de l'Atmosphère (LPCA), Bâtiment MREI2, 189A avenue Maurice Schumann, 59140 Dunkerque, France.
authors.forename: Hélène
authors.initials: H
authors.lastname: Marris
authors.forename: Karine
authors.initials: K
authors.lastname: Deboudt
authors.forename: Patrick
authors.initials: P
authors.lastname: Augustin
authors.forename: Pascal
authors.initials: P
authors.lastname: Flament
authors.forename: François
authors.initials: F
authors.lastname: Blond
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Fiani
authors.forename: Marc
authors.initials: M
authors.lastname: Fourmentin
authors.forename: Hervé
authors.initials: H
authors.lastname: Delbarre
mesh_terms: D000336:Aerosols / Q000032:analysis*; D000393:Air Pollutants / Q000032:analysis*; D004784:Environmental Monitoring; D005602:France; D007501:Iron / Q000032:analysis; D008345:Manganese / Q000032:analysis; D008669:Metallurgy; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis*; D013052:Spectrometry, X-Ray Emission; D013997:Time Factors
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D052638:Particulate Matter; C083456:ferro-manganese alloy; D008345:Manganese; D007501:Iron