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Field tests of a passive aerosol sampler.

Authors
Wagner-J; Leith-D
Source
J Aerosol Sci 2001 Jan; 32(1):33-48
NIOSHTIC No.
20021913
Abstract
Field tests have been conducted to evaluate the passive aerosol sampler described by Wagner and Leith (2000a,b) Aerosol Science Technology, in press). Tests were conducted in a well-ventilated occupational environment with coarse, high-concentration aerosols. Measured friction velocities were less than 0.4 m s(-1) a range in which passive sampler performance does not depend on turbulence. Passive sampler results correlated well with those of eight-stage cascade impactors, with R-2 = 0.80 and 0.93 for PM2.5 and PM10, respectively. Average disagreement between the passive samplers and the impactors was -31 and 41% for PM2.5 and PM10, respectively. These discrepancies were attributed to the small amount of fine particles present, hygroscopic particles, and particle bounce in the impactors. The average CVPM10 for all samples was 20%. The average CVPM2.5 for non-hygroscopic samples was 16%. The average CVPM2.5 for hygroscopic samples was much higher, 59%; water losses in these samples created ill-defined particle boundaries which led to imprecision.
Keywords
Sampling-equipment; Aerosols; Aerosol-sampling; Sampling; Sampling-methods; Samplers; Aerosol-particles; Particulate-sampling-methods; Particulates; Author Keywords: Aerosol sampling; Passive sampling; Sampler comparisons
Contact
Jeff Wagner, Department of Environmental Sciences and Engineering, University of North Carolina, CB#7400, Rosenau Hall, Chapel Hill, NC 27599, USA
CODEN
JALSB7
Publication Date
20010101
Document Type
Journal Article
Email Address
jwagner@email.unc.edu
Funding Amount
72250
Funding Type
Grant
Fiscal Year
2001
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R03-OH-003774
Issue of Publication
1
ISSN
0021-8502
Source Name
Journal of Aerosol Science
State
NC
Performing Organization
University of North Carolina
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