Monitoring diesel particulate matter and calculating diesel particulate densities using Grimm Model 1.109 real-time aerosol monitors in underground mines

Details

• Personal Author:
  Kimbal KC ; Larson R ; Pahler L ; VanDerslice J
• Description:
  Currently, there is no Mine Safety and Health Administration (MSHA)-approved sampling method that provides real-time results for ambient concentrations of diesel particulates. This study investigated whether a commercially available aerosol spectrometer, the Grimm Portable Aerosol Spectrometer Model 1.109, could be used during underground mine operations to provide accurate real-time diesel particulate data relative to MSHA-approved cassette-based sampling methods. A subset was to estimate size-specific diesel particle densities to potentially improve the diesel particulate concentration estimates using the aerosol monitor. Concurrent sampling was conducted during underground metal mine operations using six duplicate diesel particulate cassettes, according to the MSHA-approved method, and two identical Grimm Model 1.109 instruments. Linear regression was used to develop adjustment factors relating the Grimm results to the average of the cassette results. Statistical models using the Grimm data produced predicted diesel particulate concentrations that highly correlated with the time-weighted average cassette results (R2 = 0.86, 0.88). Size-specific diesel particulate densities were not constant over the range of particle diameters observed. The variance of the calculated diesel particulate densities by particle diameter size supports the current understanding that diesel emissions are a mixture of particulate aerosols and a complex host of gases and vapors not limited to elemental and organic carbon. Finally, diesel particulate concentrations measured by the Grimm Model 1.109 can be adjusted to provide sufficiently accurate real-time air monitoring data for an underground mining environment. [Description provided by NIOSH]
• Subjects:
  Environmental Monitoring Mining Occupational Health Oil And Gas Industry Safety
• Keywords:
  Aerosol-particles Aerosol-sampling Air-quality-monitoring Analytical-instruments Author Keywords: Cassette Diesel-emissions Diesel-exhausts Diesel Particulate Matter DPM Grimm Model 1.109 Aerosol Monitor Mathematical-models Mining-industry Monitors Particulate-sampling-methods Particulates Samplers Sampling-methods Statistical-analysis Time-weighted-average-exposure Underground-miners Underground-mining Underground Metal Mine

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• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 8 ; Utah
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  353-361
• Volume:
  9
• Issue:
  6
• NIOSHTIC Number:
  nn:20040929
• Citation:
  J Occup Environ Hyg 2012 Jun; 9(6):353-361
• Contact Point Address:
  Leon F. Pahler, University of Utah, Rocky Mountain Center forOccupational and Environmental Health, 391 Chipeta Way, Suite C, Salt Lake City, UT 84108
• Email:
  leon.pahler@hsc.utah.edu
• Federal Fiscal Year:
  2012
• Performing Organization:
  University of Utah
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20280630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2e98ef8361810d961563816c5da52b506af26c16059ead1c732b2bf4ef083dbc8ef85d2daf7593ac0df5e2f0a7052d98d126a00c210fe2e6347e2acc352d38ee
• Download URL:
  https://stacks.cdc.gov/view/cdc/193622/cdc_193622_DS1.pdf
• File Type:
  [PDF - 407.02 KB ]