1979 · 34 citations · 0 references
Public HealthEnvironmental EngineeringEnvironmental SciencesAir PollutionAir Pollution ControlAir Quality ManagementAerosol ScienceAir FiltrationAir QualityAir SamplingParticle FilteringParticulate MatterAerosol FiltrationAerosol Performance TestingAerosol SamplingFilter DesignFilter-based Air SamplingParticle FiltrationParticle Size SeparationSeparation Curve Analysis
Studies were conducted on the use of Nuclepore filters to perform a dichotomous particle size separation in ambient aerosols. Optimization of the resulting stacked filter unit was undertaken, with incorporation of information from theoretical analyses, laboratory studies, and tests in a variety of ambient conditions. The stacked filter unit was improved by development of antibounce coatings for the coarse filter, incorporation of a new fine filter developed by the Nuclepore Corporation, and addition of a pneumatic constant flow device. The unit has been shown to quantitatively collect particles between 2.5 micrometers and 15 micrometers on the coarse filter, and 0 to 2.5 micrometers on the fine filter, with a separation curve similar to that of the human respiratory tract. Stacked filter units weigh about 15 kg., and total cost of components for the basic unit is about $200.