Relationship of Sampling Efficiency for Manikin-Mounted Personal Samplers to Efficiency Measurements Made Independent of Manikin

Details

• Personal Author:
  Bird A ; Smith J
• Description:
  The goal of this study was to determine if measurement of the airflow approaching manikin-mounted personal samplers can be used to predict their sampling efficiency using efficiency measurements made independently of the manikin. The first part of the work involved the determination of the velocity and direction of airflow at specific locations (where personal samplers would be located) around a human-like manikin by using laser-Doppler velocimetry (LDV) at two wind speeds and three orientations of the manikin with respect to the wind. Sampling-efficiency measurements for two personal samplers, the IOM (SKC, Inc., Eighty-Four, PA) and GSP (Strohlein GmbH and Co., Kaarst, Germany) for a 70 m (mass median diameter) aerosol were made both independently of the manikin for a range of wind speeds and directions and while mounted on the manikin for the wind speeds and directions studied by LDV. The efficiency measurements made independently of the manikin were adjusted by using the local-manikin concentration experienced by the sampler to calculate an approximated efficiency for manikin-mounted personal samplers that experienced a similar wind speed and direction. The approximated efficiency agreed with the measured efficiency of the manikin-mounted samplers when the manikin faced the wind or was at 90 degrees to the wind. Some assumptions were required to obtain agreement when the manikin was at 180 degrees to the wind probably due to the turbulent nature of the flow with the manikin at this angle to the wind. This technique may be useful in simplifying testing procedures and in developing performance criteria for inhalable dust samplers since clearly defined test conditions can be specified. [Description provided by NIOSH]
• Subjects:
  Air Movements Environmental Monitoring Occupational Health Personal Protective Equipment Safety
• Keywords:
  Air-flow Air-monitoring Air-sampling-equipment Airflow Behavior Author Keywords: Personal Samplers Humans Manikin-mounted Samplers Personal-protective-equipment Sampling-equipment Sampling-methods
• ISSN:
  0021-8502
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 3 ; OSHA Region 5 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  33
• Issue:
  9
• NIOSHTIC Number:
  nn:20022425
• Citation:
  J Aerosol Sci 2002 Sep; 33(9):1235-1259
• Contact Point Address:
  Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Division of Applied Research and Technology, 4676 Columbia Parkway, Cincinnati, OH 45226, USA
• Email:
  jps3@cdc.gov
• Federal Fiscal Year:
  2002
• NORA Priority Area:
  Research Tools and Approaches: Exposure Assessment Methods
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Aerosol Science
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d47d3be1fe2e3f19ef27da05ba99dfccec682507cf45cfa63b88e8b8a537a7d9ee7b42a54bb365b5bb650ed60882b2d8645c37d78e327d3cca94dee2cf5fc906
• Download URL:
  https://stacks.cdc.gov/view/cdc/199213/cdc_199213_DS1.pdf
• File Type:
  [PDF - 308.76 KB ]