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Etude simultanée de la composition chimique de la fraction organique des particules secondaires et de la phase gazeuse atmosphériques en site réel et en atmosphère simulée

Abstract : Secondary Organic Aerosols (SOAs) are formed in the atmosphere by gas-to-particle conversion of oxygenated Semi-Volatile Organic Compounds (SVOCs). However, the community currently lacks data to describe these multiphase phenomena and assess their climate and health impacts. This analytical work intends to improve our understanding of SOA by an original study based on the development of a simultaneous sampling method for gaseous and particulate phases. Both phases are analyzed by the same sensitive and rapid analytical technique coupling thermal-desorption, gas chromatography and mass spectrometry (TD-GC-MS). The method involves derivatization of oxygenated SVOCs, in gas and particulate phases, on a solid support fitting with TD, to improve their analytical response and facilitate their identification. This work presents this development performed combining smog chamber experiments and the MEGAPOLI field campaign.
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  • HAL Id : ineris-00973551, version 1
  • INERIS : EN-2010-017

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Stéphanie Rossignol, Laura Chiappini, Jean-François Doussin, Emilie Perraudin. Etude simultanée de la composition chimique de la fraction organique des particules secondaires et de la phase gazeuse atmosphériques en site réel et en atmosphère simulée. 25. Congrès Français sur les Aérosols (CFA 2010), Jan 2010, Paris, France. pp.NC. ⟨ineris-00973551⟩

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