National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Methods for Developing and Testing Aerosol Samplers.

PB2005105216

Publication Date	2003
Personal Author	Vincent, J. H.; Brixey, L. A.; Evans, D. E.
Page Count	94
Abstract	Development and characterization of samplers whose performances mimic the inhalability of the human head will be an important step forward in exposure assessment for environmental and occupational aerosols. The current method for sampler characterization involves arduous experiments in large wind tunnels, of which only a few exist. Therefore a new, rapid and cost-effective method is needed, and the main objective of this research was to develop a set of scaling laws for aerosol sampling, leading to new methodology for aerosol sampler characterization in a small-scale wind tunnel using a direct-reading aerodynamic particle sizer (APS), which counts and sizes sampled particles. For this purpose, a prototype automated experimental system was designed and built, which included a novel approach to account for particle losses inside the sampler inlet. For this, the sampler entry was filled with a plug of porous plastic foam that smoothed the aspirated air flow and provided well-defined particle penetration into the instrument.
Keywords	Aerosols Samplers Aspiration efficiency Probes Field tests Personal aerosol samplers Counts Sizes Air flows Nozzles Aerosol sampling Scaling laws
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	Michigan Univ., Ann Arbor. School of Public Health.; National Inst. for Occupational Safety and Health, Washington, DC.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Washington, DC.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	200518

Methods for Developing and Testing Aerosol Samplers.

Methods for Developing and Testing Aerosol Samplers.
PB2005105216

Publication Date	2003
Personal Author	Vincent, J. H.; Brixey, L. A.; Evans, D. E.
Page Count	94
Abstract	Development and characterization of samplers whose performances mimic the inhalability of the human head will be an important step forward in exposure assessment for environmental and occupational aerosols. The current method for sampler characterization involves arduous experiments in large wind tunnels, of which only a few exist. Therefore a new, rapid and cost-effective method is needed, and the main objective of this research was to develop a set of scaling laws for aerosol sampling, leading to new methodology for aerosol sampler characterization in a small-scale wind tunnel using a direct-reading aerodynamic particle sizer (APS), which counts and sizes sampled particles. For this purpose, a prototype automated experimental system was designed and built, which included a novel approach to account for particle losses inside the sampler inlet. For this, the sampler entry was filled with a plug of porous plastic foam that smoothed the aspirated air flow and provided well-defined particle penetration into the instrument.
Keywords	Aerosols Samplers Aspiration efficiency Probes Field tests Personal aerosol samplers Counts Sizes Air flows Nozzles Aerosol sampling Scaling laws
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	Michigan Univ., Ann Arbor. School of Public Health.; National Inst. for Occupational Safety and Health, Washington, DC.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Washington, DC.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	200518