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Brand, P. ; Gebhart, J. ; Below, M. ; Georgi, B. ; Heyder, J.

Characterization of environmental aerosols on Heligoland Island.

Atmos. Environ. 25 A, 581-585 (1991)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
A mobile aerosol spectrometer for automatic in situ evaluation of particle size and number concentration in environmental aerosols is described. The instrument is able to evaluate size distributions of ambient particles in the range 0.01-25 μm, and to detect alterations in these distributions with a time resolution of a few minutes, capabilities not at present offered by any single commercially available instrument. The satisfactory performance of the spectrometer was demonstrated in field trials at a rural site (Heligoland Island). Environmental aerosols at this site are usually characterized by a particle number concentration of about 5000 cm-3. During the passage of a warm air front, however, a 6-fold increase in this concentration was detected, resulting from enhanced particle production in the nucleation mode below 0.05 μm. | A mobile aerosol spectrometer for automatic in situ evaluation of particle size and number concentration in environmental aerosols is described. The instrument is able to evaluate size distributions of ambient particles in the range 0.01-25 μm, and to detect alterations in these distributions with a time resolution of a few minutes, capabilities not at present offered by any single commercially available instrument. The satisfactory performance of the spectrometer was demonstrated in field trials at a rural site (Heligoland Island). Environmental aerosols at this site are usually characterized by a particle number concentration of about 5000 cm-3. During the passage of a warm air front, however, a 6-fold increase in this concentration was detected, resulting from enhanced particle production in the nucleation mode below 0.05 μm.
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Publication type Article: Journal article
Document type Scientific Article
ISSN (print) / ISBN 1352-2310
e-ISSN 1873-2844
Journal Atmospheric Environment
Quellenangaben Volume: 25 A, Issue: 3-4, Pages: 581-585 Article Number: , Supplement: ,
Publisher Elsevier
Reviewing status Peer reviewed
Institute(s) Institute of Radiation Protection (ISS)