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          Institute: MPI für Chemie     Collection: Publikationen MPI für Chemie     Display Documents



ID: 675642.0, MPI für Chemie / Publikationen MPI für Chemie
Quantitative single-particle analysis with the Aerodyne aerosol mass spectrometer: development of a new classification algorithm and its application to field data
Authors:Freutel, F.; Drewnick, F.; Schneider, J.; Klimach, T.; Borrmann, S.
Language:English
Date of Publication (YYYY-MM-DD):2013
Title of Journal:Atmospheric Measurement Techniques
Volume:6
Issue / Number:11
Start Page:3131
End Page:3145
Review Status:Internal review
Audience:Experts Only
Abstract / Description:Single-particle mass spectrometry has proven a valuable tool for gaining information on the mixing state of aerosol particles. With the Aerodyne aerosol mass spectrometer (AMS) equipped with a light-scattering probe, nonrefractory components of submicron particles with diameters larger than about 300 nm can even be quantified on a single-particle basis. Here, we present a new method for the analysis of AMS single-particle mass spectra. The developed algorithm classifies the particles according to their components (e. g. sulphate, nitrate, different types of organics) and simultaneously provides quantitative information about the composition of the single particles. This classification algorithm was validated by applying it to data acquired in laboratory experiments with particles of known composition, and applied to field data acquired during the MEGAPOLI summer campaign (July 2009) in Paris. As shown, it is not only possible to directly measure the mixing state of atmospheric particles, but also to directly observe repartitioning of semi-volatile species between gas and particle phase during the course of the day.
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:N. N.
Affiliations:MPI für Chemie
Identifiers:ISI:000327815900013 [ID No:1]
ISSN:1867-1381 [ID No:2]
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