Journal article
Concentration measurement and counting efficiency of the aerodynamic particle sizer 3321
Journal of aerosol science, Vol.34(5), pp.627-634
05/2003
DOI: 10.1016/S0021-8502(03)00030-2
Abstract
The aerodynamic particle sizer (APS) model 3321 (TSI, Inc., St. Paul, MN) aims to resolve issues identified with an earlier APS, model 3320. These issues include discrepancies between concentrations measured in summing and in correlated modes, and the creation of “anomalous”, large particles caused by recirculation within the detection region. In the present work, the number concentration of a laboratory aerosol was measured with the APS 3321 to be statistically the same in summing mode and in correlated mode for all particles except those in bin 1, <0.523μm. Further, anomalous large particles were not measured with the APS 3321. The counting efficiency of the APS 3321 was lower than that for the APS 3320 and ranged from 40% to 60% for particles from 0.8 to 4μm, respectively. Thus, concentrations reported by the APS 3321 were lower than those measured by the impactor. However, because counting efficiencies were roughly constant with particle size and anomalous particles were absent, the shape of the size distribution was similar to that obtained using the impactor.
Details
- Title: Subtitle
- Concentration measurement and counting efficiency of the aerodynamic particle sizer 3321
- Creators
- Thomas M PetersDavid Leith
- Resource Type
- Journal article
- Publication Details
- Journal of aerosol science, Vol.34(5), pp.627-634
- DOI
- 10.1016/S0021-8502(03)00030-2
- ISSN
- 0021-8502
- eISSN
- 1879-1964
- Publisher
- Elsevier Ltd
- Language
- English
- Date published
- 05/2003
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Occupational and Environmental Health
- Record Identifier
- 9983997347002771
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