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| Titel |
Fast time-resolved aerosol collector: proof of concept |
| VerfasserIn |
X.-Y. Yu, J. P. Cowin, M. J. Iedema, H. Ali |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 3, no. 5 ; Nr. 3, no. 5 (2010-10-12), S.1377-1384 |
| Datensatznummer |
250001298
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| Publikation (Nr.) |
 copernicus.org/amt-3-1377-2010.pdf |
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| Zusammenfassung |
| Atmospheric particles can be collected in the field on substrates for
subsequent laboratory analysis via chemically sensitive single particle
methods such as scanning electron microscopy with energy dispersive x-ray
analysis. With moving substrates time resolution of seconds to minutes can
be achieved. In this paper, we demonstrate how to increase the time
resolution when collecting particles on a substrate to a few milliseconds to
provide real-time information. Our fast time-resolved aerosol collector
("Fast-TRAC") microscopically observes the particle collection on a
substrate and records an on-line video. Particle arrivals are resolved to
within a single frame (4–17 ms in this setup), and the spatial locations
are matched to the subsequent single particle analysis. This approach also
provides in-situ information on particle size and number concentration.
Applications are expected in airborne studies of cloud microstructure,
pollution plumes, and surface long-term monitoring. |
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