| Volumes and Issues Contents of Issue 5 |
www.atmos-meas-tech.net/3/1377/2010/
doi:10.5194/amt-3-1377-2010
© Author(s) 2010. This work is distributed
under the Creative Commons Attribution 3.0 License.
Fast time-resolved aerosol collector: proof of concept
1Pacific Northwest National Laboratory, Richland, WA, USA
*now at: Arkansas State University, Jonesboro, AR, USA
Abstract. 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.
Final Revised Paper (PDF, 2785 KB) Discussion Paper (AMTD)
Citation: Yu, X.-Y., Cowin, J. P., Iedema, M. J., and Ali, H.: Fast time-resolved aerosol collector: proof of concept, Atmos. Meas. Tech., 3, 1377-1384, doi:10.5194/amt-3-1377-2010, 2010. Bibtex EndNote Reference Manager XML
