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Mining Publication: Characterization of Ambient and Extracted PM2.5 Collected on Filters for Toxicology Applications
Keywords: Filter dust collectors Particle size distribution
Original creation date: October 2015
Authors: C Roper, LG Chubb, LK Cambal, B Tunno, JE Clougherty, SE Mischler
Peer Reviewed Journal Article - October 2015
Go to Web Page
NIOSHTIC2 Number: 20047022
Inhal Toxicol 2015 Oct; 27(13):673-681
Research on the health effects of fine particulate matter (PM2.5) frequently disregards the differences in particle composition between that measured on an ambient filter versus that measured in the corresponding extraction solution used for toxicological testing. This study presents a novel method for characterizing the differences, in metallic and organic species, between the ambient samples and the corresponding extracted solutions through characterization of extracted PM2.5 suspended on filters. Removal efficiency was found to be 98.0 ± 1.4% when measured using pre- and post-removal filter weights, however, this efficiency was significantly reduced to 80.2 ± 0.8% when measured based on particle mass in the extraction solution. Furthermore, only 47.2 ± 22.3% of metals and 24.8 ± 14.5% of organics measured on the ambient filter were found in the extraction solution. Individual metallic and organic components were extracted with varying efficiency, with many organics being lost entirely during extraction. Finally, extraction efficiencies of specific PM2.5 components were inversely correlated with total mass. This study details a method to assess compositional alterations resulting from extraction of PM2.5 from filters, emphasizing the need for standardized procedures that maintain compositional integrity of ambient samples for use in toxicology studies of PM2.5.
Cover image for Characterization of Ambient and Extracted PM2.5 Collected on Filters for Toxicology ApplicationsPeer Reviewed Journal Article - October 2015
Go to Web Page
NIOSHTIC2 Number: 20047022
Inhal Toxicol 2015 Oct; 27(13):673-681
See Also
Characterizing Particle Size Distributions of Crystalline Silica in Gold Mine Dust
Crystalline Silica Analysis: A Comparison of Calibration Materials and Recent Coal Mine Dust Size Distributions
Differential Pressure Response of 25-mm-Diameter Glass Fiber Filters Challenged with Coal and Limestone Dust Mixtures
Dust Capture Performance of a Water Exhaust Conditioner for Roof Bolting Machines
Effects of Sintered Metal Diesel Particulate Filter System on Diesel Aerosols and Nitric Oxides in Mine Air
Field Assessment of Enclosed Cab Filtration System Performance Using Particle Counting Measurements
An Inexpensive Dual-Chamber Particle Monitor: Laboratory Characterization
NIOSH Hazard ID 1 - Exposure to Silica Dust on Continuous Mining Operations Using Flooded-Bed Scrubbers
Particle Size and Surface Area Effects on Explosibility Using a 20-L Chamber
Thermally Induced Filter Bias in TEOM� Mass Measurement
Page last reviewed: November 25, 2016
Page last updated: November 25, 2016
Content source: National Institute for Occupational Safety and Health, Mining Program
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