Dynamic evaluation of aerosol sampling inlets

Details

• Personal Author:
  Tufto PA ; Willeke K
• Description:
  A technique for dynamically determining the efficiency of aerosol sampling inlets was described. The inlet under study was integrated into an optical single particle counter that had been modified to accept flow rates up to 75 liters per minute. The inlet and particle counter were used inside a specially designed wind tunnel. Test aerosols were injected into the mixing chamber of the wind tunnel by means of an aerosol generator whose design was based on the vibrating orifice principle. The inlet under study took samples from the aerosol flow in the test section of the wind tunnel. The aerosol flow rate was calibrated and measured during testing by taking the pressure difference between the static pressure tap and the upstream static pressure. Downstream from the counter the aerosols were removed by in line filters. Data obtained for a thin walled sampling tube operated at 30 degrees downward from the flow direction that utilized 5 to 40 micron diameter oleic-acid particles as the test aerosol, were presented. Because each particle was counted individually the required sampling times were short and the scatter in the data was low. The authors suggest that the new technique should enable sufficient data with a low degree of scatter be taken so that analytical models for predicting sampling efficiency of various inlets can be developed. [Description provided by NIOSH]
• Subjects:
  Aerosols Laboratories Occupational Health Safety
• Keywords:
  Aerosol-sampling Control-technology Equipment-design Equipment-reliability Industrial-hygiene Laboratory-testing NIOSH-Grant NIOSH-Publication
• ISSN:
  0013-936X
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  16
• Issue:
  9
• NIOSHTIC Number:
  nn:00186823
• Citation:
  Environ Sci Technol 1982 Sep; 16(9):607-609
• Contact Point Address:
  Environmental Health University of Cincinnati 3223 Eden Avenue Cincinnati, Ohio 45267
• Federal Fiscal Year:
  1982
• NORA Priority Area:
  Research Tools and Approaches: Control Technology and Personal Protective Equipment
• Performing Organization:
  University of Cincinnati, Cincinnati, Ohio
• Peer Reviewed:
  True
• Start Date:
  19780901
• Source Full Name:
  Environmental Science and Technology
• End Date:
  19810831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:aada68b2db369ef166f7994c7895f9c34d117f1322eeaf68cf259564c818003c06f080d64c13facf8e432c59abdc3f848c1cd2b5d84fbda0155df8e9db90fcc3
• Download URL:
  https://stacks.cdc.gov/view/cdc/204525/cdc_204525_DS1.pdf
• File Type:
  [PDF - 411.12 KB ]