Journal article
Methodology for measuring PM2.5 separator characteristics using an Aerosizer: PM2.5 Federal Reference Method Sampler
Aerosol science and technology, Vol.34(5), pp.398-406
2001
DOI: 10.1080/02786820119561
Abstract
A method is presented that enables the measurement of the particle size separation characteristics of an inertial separator in a rapid fashion. Overall penetration is determined for discrete particle sizes using an Aerosizer (Model LD, TSI, Inc., Particle Instruments/Amherst, Amherst, MA) time-of-flight measurement device by comparing the number concentration of particles penetrating through a separator to the concentration entering the separator. Critical measurements of separator characteristics are determined using a vibrating orifice aerosol generator to produce the challenge aerosol. Measurements of penetration requiring less precision and accuracy may be determined using nebulized suspensions of polystyrene latex microspheres as the challenge aerosol. The time for measuring a single penetration curve can be reduced from a week using vibrating orifice aerosol to fewer than 2 h using polystyrene latex microsphere aerosol. Validation of the penetration determined with this method was made by comparison to fluorometric techniques. It is estimated that penetration may be measured with an accuracy of ±4%, which is equivalent to an uncertainty of approximately 0.04 μm in cutpoint diameter determination for PM2.5 separators. The overall accuracy in determining a cutpoint diameter of a PM2.5 separator (including uncertainty in the creation of test aerosols) is estimated to be better than ±0.09μm.
Details
- Title: Subtitle
- Methodology for measuring PM2.5 separator characteristics using an Aerosizer: PM2.5 Federal Reference Method Sampler
- Creators
- Thomas M Peters - Research Triangle Institute, Research Triangle Park, North Carolina, United StatesRobert W Vanderpool - Research Triangle Institute, Research Triangle Park, North Carolina, United StatesRussell W Wiener - Research Triangle Institute, Research Triangle Park, North Carolina, United States
- Resource Type
- Journal article
- Publication Details
- Aerosol science and technology, Vol.34(5), pp.398-406
- Publisher
- Taylor & Francis
- DOI
- 10.1080/02786820119561
- ISSN
- 0278-6826
- eISSN
- 1521-7388
- Language
- English
- Date published
- 2001
- Academic Unit
- Occupational and Environmental Health; Roy J. Carver Department of Biomedical Engineering
- Record Identifier
- 9984214688202771
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