Airplane Soot Chemical Composition Analysis by Laser Desorption and Secondary Ions Mass Spectrometry

C. Irimea 1 I.K. Ortega 1 Y. Carpentier 1 M. Ziskind 1 F.X. Ouf 2 F. Salm 2 D. Delhaye 3 D. Gaffié 3 A. Faccinetto 4 C. Focsa 1
1 PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523
2 Institut de Radioprotection et de Sûreté Nucléaire (IRSN)
3 Palaiseau - ONERA - The French Aerospace Lab
4 PC2A - Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522
Abstract : The present work has been performed in the framework of the French national project MERMOSE, which aims to characterize the soot emissions from airplane engines and to determine their role in the formation of cirrus clouds. A first sampling campaign performed on the PowerJet SaM-146 turbofan (SNECMA/Saturn) provided soot particles collected on quartz fiber filters in four engine regimes (30 %, 70 %, 85 % and 100 %). Two-Step (Desorption/Ionization) Laser Mass Spectrometry (L2MS) and Time of Fight Secondary Ion Mass Spectrometry (ToF-SIMS) techniques were used to analyze the surface chemical composition of the soot particles, with special focus on PAHs. In L2MS, the adsorbed phase is probed by nanosecond laser desorption (532nm), then the ejected molecules are ionized with a second ns laser (266nm) and further mass-separated by ToF-MS.
Mots-clés : SOOT PAH AVIATION LASER DESORPTION SIMS
Type de document :
Communication dans un congrès
2014 International Aerosol Conference, Aug 2014, BUSAN, South Korea
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C. Irimea, I.K. Ortega, Y. Carpentier, M. Ziskind, F.X. Ouf, et al.. Airplane Soot Chemical Composition Analysis by Laser Desorption and Secondary Ions Mass Spectrometry. 2014 International Aerosol Conference, Aug 2014, BUSAN, South Korea. 〈hal-01071695〉

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