Passive measurement of coarse particulate matter, PM10-2.5.
Ott-DK; Cyrs-W; Peters-TM
J Aerosol Sci 2008 Feb; 39(2):156-167
This work developed a passive sampling method to measure ambient PM10-2.5. The coefficient of variation (CV) of PM10-2.5 measured with collocated passive samplers was 20.1% in laboratory tests and 11.6% in field tests. PM10-2.5 measured passively deviated from that measured with a filter-based dichotomous sampler by 29% in field tests. The strong correlation between PM10-2.5 derived passively with the dichotomous sampler (r=0.97) suggests that the bias observed in field tests was systematic and may be empirically corrected. The limit of detection of the method was determined to be 2.3 microm-3 for a 5-day sample. A bootstrap analysis suggests that at least 300 particles should be imaged to stabilize the analytical variability of the method. Repeated analysis suggests that the CV for the analytical method is 5%. This method offers an inexpensive means to assess PM10-2.5 that may be incorporated into compliance networks or epidemiological studies.
Sampling; Sampling-methods; Exposure-levels; Exposure-limits; Particulates; Particulate-dust; Statistical-analysis; Respirable-dust; Respiration; Respiratory-irritants; Aerosols; Aerosol-particles;
Author Keywords: Passive sampling; Coarse particulate matter; PM10-2.5; Aerosol
Thomas M. Peters, Department of Occupational and Environmental Health, The University of Iowa, 102 IREH, 100 Oakdale Campus, Iowa City, IA 52242
Journal of Aerosol Science
University of Iowa