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Evolution of Nanoparticle Composition in CLOUD in Presence of Sulphuric Acid, Ammonia and Organics
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2013 (English)In: NUCLEATION AND ATMOSPHERIC AEROSOLS, American Institute of Physics (AIP), 2013, 291-294 p.Conference paper (Refereed)
Abstract [en]

In this study, we investigate the composition of nucleated nanoparticles formed from sulphuric acid, ammonia, amines, and oxidised organics in the CLOUD chamber experiments at CERN. The investigation is carried out via analysis of the particle hygroscopicity (size range of 15-63 nm), ethanol affinity (15-50nm), oxidation state (<50 nm), and ion composition (few nanometers). The organic volume fraction of particles increased with an increase in particle diameter in presence of the sulphuric acid, ammonia and organics. Vice versa, the sulphuric acid volume fraction decreased when the particle diameter increased. The results provide information on the size-dependent composition of nucleated aerosol particles.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2013. 291-294 p.
, AIP Conference Proceedings, ISSN 0094-243X ; 1527
Keyword [en]
CLOUD, nanoparticles, hygroscopicity, ethanol affinity, composition
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:su:diva-92084DOI: 10.1063/1.4803260ISI: 000319766400070ISBN: 978-0-7354-1152-4OAI: diva2:637292
19th International Conference on Nucleation and Atmospheric Aerosols (ICNAA), JUN 23-28, 2013, Fort Collins, CO
Available from: 2013-07-17 Created: 2013-07-17 Last updated: 2013-08-07Bibliographically approved

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Riipinen, Ilona
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Department of Applied Environmental Science (ITM)
Earth and Related Environmental Sciences

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