An Evaluation of Sharp Cut Cyclones for Sampling Diesel Particulate Matter Aerosol in the Presence of Respirable Dust

Details

• Alternative Title:
  Ann Occup Hyg
• Personal Author:
  Cauda, Emanuele ; Sheehan, Maura ; Gussman, Robert ; Kenny, Lee ; Volkwein, Jon
• Description:
  Two prototype cyclones were the subjects of a comparative research campaign with a diesel particulate matter sampler (DPMS) that consists of a respirable cyclone combined with a downstream impactor. The DPMS is currently used in mining environments to separate dust from the diesel particulate matter and to avoid interferences in the analysis of integrated samples and direct-reading monitoring in occupational environments. The sampling characteristics of all three devices were compared using ammonium fluorescein, diesel, and coal dust aerosols. With solid spherical test aerosols at low particle loadings, the aerodynamic size-selection characteristics of all three devices were found to be similar, with 50% penetration efficiencies (d 50) close to the design value of 0.8 μm, as required by the US Mine Safety and Health Administration for monitoring occupational exposure to diesel particulate matter in US mining operations. The prototype cyclones were shown to have 'sharp cut' size-selection characteristics that equaled or exceeded the sharpness of the DPMS. The penetration of diesel aerosols was optimal for all three samplers, while the results of the tests with coal dust induced the exclusion of one of the prototypes from subsequent testing. The sampling characteristics of the remaining prototype sharp cut cyclone (SCC) and the DPMS were tested with different loading of coal dust. While the characteristics of the SCC remained constant, the deposited respirable coal dust particles altered the size-selection performance of the currently used sampler. This study demonstrates that the SCC performed better overall than the DPMS.
• Subjects:
  Aerosols Air Movements Air Pollutants, Occupational Article Coal Cyclone Diesel Particulate Matter DPMS Dust Environmental Monitoring Fluoresceins Humans Inhalation Exposure Mining Occupational Exposure Particle Size Particulate Matter Respiration Sampler Vehicle Emissions

  More +
• Source:
  Ann Occup Hyg. 58(8):995-1005.
• Pubmed ID:
  25060240
• Pubmed Central ID:
  PMC4540237
• Document Type:
  Journal Article
• Funding:
  CC999999/Intramural CDC HHS/United States
• Volume:
  58
• Issue:
  8
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:0ef06c48c2745ca24f6902db0a7931e1133cd09d8eedb17805e7c5be2be1fc58
• Download URL:
  https://stacks.cdc.gov/view/cdc/32975/cdc_32975_DS1.pdf
• File Type:
  [PDF - 1.89 MB ]