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Comparison of the Grimm 1.108 and 1.109 portable aerosol spectrometer to the TSI 3321 aerodynamic particle sizer for dry particles.

Authors
Peters-TM; Ott-D; O'Shaughnessy-PT
Source
Ann Occup Hyg 2006 Nov; 50(8):843-850
NIOSHTIC No.
20040478
Abstract
This study compared the response of two optical particle counters with that of an aerodynamic particle sizer. The optical particle counters rely on the amount of incident light scattered at 90 degrees by a particle to measure particle number concentration by optical particle size. Two models of optical particle counters from Grimm Technologies were used: the portable aerosol spectrometer (PAS) 1.108 (0.3-20 microm in 15 channels); and the PAS 1.109 (0.2-20 microm in 30 size channels). With a substantially different operating principle from that employed by the optical particle counters, the aerodynamic particle sizer (APS) model 3321 (TSI, Inc., St Paul, MN, USA) sizes particles according to their behavior in an accelerating flow to provide particle number concentration by aerodynamic size over a slightly narrower size range (0.5-20 microm) in 52 channels. The responses of these instruments were compared for three sizes of monodisperse solid aerosols composed of polystyrene latex spheres and a polydisperse aerosol composed of Arizona test dust. The PASs provided similar results to those from the APS. However, there were systematic differences among instruments in number and mass concentration measurement that depended upon particle size.
Keywords
Particulates; Particle-counters; Measurement-equipment; Aerosols; Dust-analysis; Dust-particles; Dusts; Author Keywords: aerodynamic particle size; particle size; performance evaluation
Contact
Thomas M. Peters, Department of Occupational and Environmental Health, The University of Iowa, 100 Oakdale Campus, 102 IREH Iowa City, IA 52242-5000
CODEN
AOHYA3
Publication Date
20061101
Document Type
Journal Article
Email Address
thomas-m-peters@uiowa.edu
Funding Type
Grant
Fiscal Year
2007
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008491
Issue of Publication
8
ISSN
0003-4878
Source Name
Annals of Occupational Hygiene
State
IA
Performing Organization
University of Iowa
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