Multiple Velocity Aerosol Sampling Inlets to Conform with Revised ACGIH Criteria

Details

• Personal Author:
  Fang CP ; Xiong JQ
• Description:
  A better evaluation of the hazard posed by airborne particles is possible if particles that do not contribute to the hazard are excluded from the airborne concentration analysis. Therefore, the criteria for the inhalable, thoracic and respirable fractions of airborne particles, proposed by Soderholm (1989), were adopted by the American Conference of Government Industrial Hygienists (ACGIH), the Comite European de Normalisation (CEN) and the International Standards Organization (ISO). However, currently available commercialized inlets, including cyclones and multi-nozzle impactors with uniform jet velocities do not comply with these revised criteria. The primary objective of this research is to develop new aerosol sampling inlets. These inlets, using an entirely new concept, can comply with size-selective aerosol sampling criteria better than the inlets currently being used. A prototype array of single stage impactors with different jet velocities has been developed in the Phase I study. The experimental results show that the impaction collection performance of the new inlet meets the proposed expectations very well in the size range of testing particles, but particle losses in the inlet body were also found to be significant. The test results showed that some design modifications would improve the performance of this device. These modifications and further testing are beyond the scope of the current Phase I work. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Dust Inhalation Exposure Occupational Health Safety
• Keywords:
  Aerosol Particles Aerosol Sampling Airborne Particles Equipment Design Exposure Methods Industrial Hygiene Inhalants Respirable Dust Sampling Equipment Standards Testing Equipment

  More +
• Series:
  Grant Final Reports
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Final Grant Report
• Place as Subject:
  Arizona ; Georgia ; OSHA Region 4 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OEP - Office of Extramural Programs
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-24
• NIOSHTIC Number:
  nn:20023685
• Citation:
  Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, R43-OH-003437, 1999 Jun; :1-24
• Contact Point Address:
  JQX Lab, 701 W. Hackberry Drive, Chandler, AZ 95248
• Federal Fiscal Year:
  1999
• NORA Priority Area:
  Research Tools and Approaches: Exposure Assessment Methods
• Performing Organization:
  JQX Lab, Chandler, Arizona
• Peer Reviewed:
  False
• Start Date:
  19960801
• Source Full Name:
  National Institute for Occupational Safety and Health
• End Date:
  19990331
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:384afb0d42c6579eb96021ae2b34879f6d29f2375ad44fc94fc0b50247e28ddeb8eca5cc602861655be982b73281908f79bd4c436a8c43ceb97bb8bdc9147133
• Download URL:
  https://stacks.cdc.gov/view/cdc/218064/cdc_218064_DS1.pdf
• File Type:
  [PDF - 1.64 MB ]