Physics
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008p%26ss...56.1517l&link_type=abstract
Planetary and Space Science, Volume 56, Issue 11, p. 1517-1523.
Physics
5
Scientific paper
In order to study the toxicity of lunar dust, the respirable size fraction of lunar soil needed to be separated with an apparatus that possesses the following capabilities: no use of liquid; fully recoverable sample; and use of only small sample quantities (<1 gm). We report the design of a simple apparatus that meets these requirements and implements an inertial-impaction mechanism established in aerosol science. Lunar soil was agitated at a frequency of 100 Hz using a vibration table with a containment chamber under a constant air flow. The air flow carried the lofted lunar dust particles past four impactors (four T-junction connectors), upon which a fraction of large particles were captured during the impaction. The fine particles in the air flow were then collected by an end-of-the line membrane filter. Detailed examination of particles on the filter showed that the majority (˜80 90 wt%) are <3 μm (geometric diameter), suggesting a high level of effectiveness for the apparatus.
Eimer Benjamin C.
Liu Yang
Schnare Darren W.
Taylor Lawrence A.
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