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Les aérosols de pollution en zone urbaine et industrielle sous influence marine. Physico-chimie des particules

Abstract : Harbours for trade are known as highly urbanized and industrialised areas with important maritime, railway and road traffic. Industries are mainly represented by steel, cement works, and oil refineries. The maritime sector is becoming an even larger source of air pollution. Atmospheric NOx, SO2, O3 levels and chemical analysis of airborne particulate matter were monitored in Dunkerque conurbation in 2005 and 2006. This study was included in the IRENI program. In low-pressure conditions, local pollutants are spread out far away the agglomeration, whereas, in high-pressure regimes, the atmospheric stability and sea-breezes allow an accumulation of pollutants over the urban zone. Size-resolved chemical analyses of particulate matter collected as function of the aerodynamic diameter (Da) were performed. Ions (Na+, NH4+, Cl-, NO3-, SO42), metals (Fe, Zn, Pb, Cd,...) and organic fraction (EC, OC) are associated with sub- or/and supermicronic particles. The size, morphology and chemical species of individual particles collected selectively in the 1
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https://tel.archives-ouvertes.fr/tel-00282543
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Submitted on : Wednesday, May 28, 2008 - 11:08:36 AM
Last modification on : Wednesday, November 25, 2020 - 3:02:20 AM
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  • HAL Id : tel-00282543, version 2

Citation

Juliette Rimetz. Les aérosols de pollution en zone urbaine et industrielle sous influence marine. Physico-chimie des particules. Océan, Atmosphère. Université des Sciences et Technologie de Lille - Lille I, 2007. Français. ⟨tel-00282543v2⟩

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