Determination of Large Aerosol Particle Size by Elutriation

Details

• Personal Author:
  Buchan R ; Tillery M
• Description:
  Inhalable dust fraction determination requires aerodynamic size information for large aerosol particles. Operation of cascade impactors at flows that collect these particles leads to jet Reynolds numbers outside the range of established impactor performance. Horizontal elutriators, designed to match earlier respirable dust curves at a single flow rate, may be used to provide aerodynamic size information for particles larger than 50 microm. Operation of these elutriators at higher than design flow rates and angles other than horizontal provides for particle penetration over the size range of the inhalable dust curve. Equations are provided that relate penetration, flow rate, and angle to aerodynamic diameter to allow for bracketing the desired size and distribution. The use of impactor data reduction methods to determine size distributions with the MRE horizontal elutriator is examined with a spreadsheet model. Comparison of elutriator size determination with an impactor in the 10 to 15 microm range, where both methods could be used, resulted in reasonable agreement. This method provides for determination of aerodynamic characteristics of large aerosols in field sampling conditions. [Description provided by NIOSH]
• Subjects:
  Aerosols Dust Environment Environmental Exposure Environmental Health Environmental Monitoring Environmental Pollution Occupational Health Particulate Matter Respiratory System Safety

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• Keywords:
  Aerosol-particles Aerosol-sampling Author Keywords: Inhalable Dust Dust-analysis Dust-collection Dust-collectors Dust-control Dust-exposure Dust-measurement Dust-particles Dust-samplers Dust-sampling Dusts Elutriation Environmental-contamination Environmental-control Environmental-exposure Environmental-factors Environmental-hazards Environmental-health Environmental-pollution Environmental-protection Inhalation-studies Injuries Injury-prevention Large Aerosols Particle-counters Particulate-dust Particulate-sampling-methods Particulates Safety-climate Safety-education

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• ISSN:
  1047-322X
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; OSHA Region 8
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  17
• Issue:
  10
• NIOSHTIC Number:
  nn:20035487
• Citation:
  Appl Occup Environ Hyg 2002 Oct; 17(10):717-722
• Contact Point Address:
  M. Tillery, Department of Environmental Health, Colorado State University, Fort Collins
• Federal Fiscal Year:
  2003
• Performing Organization:
  Colorado State University - Fort Collins
• Peer Reviewed:
  True
• Start Date:
  20010930
• Source Full Name:
  Applied Occupational and Environmental Hygiene
• End Date:
  20030929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:173d45b94b0f2beade018e490cc8f32c1932a2346d53fcf27ae8feadaa77d72c8ce0dea4ecc5866f2aa47083f3b336c17055caecd81e0134c769e7896ddf951a
• Download URL:
  https://stacks.cdc.gov/view/cdc/187329/cdc_187329_DS1.pdf
• File Type:
  [PDF - 331.00 KB ]