Investigation of the Aerosols Produced by a High-Speed, Hand-Held Grinder Using Various Substrates

Details

• Personal Author:
  Maynard AD ; Zimmer, Anthony T.
• Description:
  Mechanical processes such as grinding are classically thought to form micrometer scale aerosols through abrasion and attrition. High-speed grinding has been used as the basis for testing the hypothesis that ultrafine particles do not form a substantial component of mechanically generated aerosols. A wide variety of grinding substrates were selected for evaluation to represent the broad spectrum of materials available. To characterize the particle size distribution over particle sizes ranging from 4.2 nm to 20.5 µm, the aerosol-laden air collected from an enclosed chamber was split and directed to three aerosol instruments operated in parallel. Transmission electron microscope samples of the various grinding substrates were also collected. The results demonstrate that ultrafine particles do have the potential to form a significant component of a grinding aerosol for a number of substrates. It appears that the ultrafine aerosols were formed by the following processes: (i) from within the grinding motor, (ii) from the combustion of amenable grinding substrates and (iii) from volatilization of amenable grinding materials at the grinding wheel/substrate interface. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Dust Occupational Health Particulate Matter Safety
• Keywords:
  Abrasion Airborne-particles Author Keywords: Grinding Dust-particles Dusts Nanotechnology Particle Size Distribution Particulate-dust Particulates Sampling Testing-equipment Ultrafine Aerosols

  More +
• ISSN:
  0003-4878
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  46
• Issue:
  8
• NIOSHTIC Number:
  nn:20022263
• Citation:
  Ann Occup Hyg 2002 Nov; 46(8):663-672
• Contact Point Address:
  Anthony T. Zimmer, National Institute for Occupational Safety and Health, Division of Applied Research and Technology, 4676 Columbia Parkway, Cincinnati, OH 45226, USA
• Email:
  azimmer@cdc.gov
• Federal Fiscal Year:
  2003
• NORA Priority Area:
  Research Tools and Approaches: Exposure Assessment Methods
• Peer Reviewed:
  True
• Source Full Name:
  Annals of Occupational Hygiene
• End Date:
  20040930
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c0dac53fc576a7b473fb809e4e65c478de2f0a131d8d64cae9139a150bd03dc7c322eeb7e3ce9221cc679f7e035abb80fa8133c0122595832f8cab79f5763f5a
• Download URL:
  https://stacks.cdc.gov/view/cdc/199095/cdc_199095_DS1.pdf
• File Type:
  [PDF - 321.34 KB ]