Abstract
This paper will chronologically review the various approaches to ambient aerosol sampling and will present data describing the wind-tunnel performance of a prototype inhalable particles (IP) inlet developed at the Aerosol Science Laboratory based upon the D/sub 50/ = 15 ..mu..m sampling strategy, prevalent during 1980. The inlet utilizes an aerodynamically sound housing and fluid flow design that efficiently transports the particles to the fractionating element. The inlet uses a unique omnidirectional/cyclone fractionator. Over the range of wind speeds from 0.5 to 24 km/h the 50% cut point was seen to be virtually invariant, 14.4-13.7 ..mu..m. The slope of these curves was found to be quite steep. The present inlet is currently undergoing design improvements but represents a working device that can serve as a viable inlet system for IP sampling.
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