Proposed modification to the inhalable aerosol convention applicable to realistic workplace wind speeds

Details

• Personal Author:
  Sleeth DK ; Vincent JH
• Description:
  The current convention for sampling inhalable aerosols was based on several mannequin studies performed in wind tunnels at wind speeds between 0.5 and 4 m s(-1). In reality, as we now know, the wind speed in most modern indoor working environments is generally at or below approximately 0.2 m s(-1). Inhalability studies performed in calm air aerosol chambers have shown that human aspiration efficiency at essentially zero wind speed is not consistent with the existing inhalable aerosol convention, calling into question the universal applicability of the current standard. More recently, experiments were carried out in a new hybrid wind tunnel-calm air chamber at more representative workplace wind speeds, between approximately 0.1 and 0.5 m s(-1), to fill in this knowledge gap. Comparing these new data to both the existing inhalable aerosol convention and a recently proposed alternative for low wind movement suggests that, while the existing inhalable aerosol convention remains appropriate for wind speeds above approximately 0.2 m s(-1), the modified version is more appropriate for the range below approximately 0.2 m s(-1). [Description provided by NIOSH]
• Subjects:
  Aerosols Air Movements Environmental Health Environmental Monitoring Inhalation Exposure Occupational Health Particulate Matter Respiratory System Safety Workplace
• Keywords:
  Aerosol-sampling Air-flow Air-sampling Aspiration Efficiency Author Keywords: Aerosols Breathing Environmental-factors Exposure-chambers Inhalability Inhalable Convention Inhalants Inhalation-studies Low Wind Speed Monitoring-systems Particle-aerodynamics Respiration Respiratory-rate Sampling Sampling-methods Standards Work-environment

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• ISSN:
  0003-4878
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Michigan ; OSHA Region 5 ; OSHA Region 8 ; Utah
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  476-484
• Volume:
  55
• Issue:
  5
• NIOSHTIC Number:
  nn:20040149
• Citation:
  Ann Occup Hyg 2011 Jun; 55(5):476-484
• Contact Point Address:
  Darrah K. Sleeth, Rocky Mountain Center for Occupational and Environmental Health, Department of Family and Preventative Medicine, University of Utah, 391 Chipeta Way, Suite C, Salt Lake City, UT 84108, USA
• Email:
  darrah.sleeth@hsc.utah.edu
• Federal Fiscal Year:
  2011
• NORA Priority Area:
  Pulmonary System Disorders
• Performing Organization:
  Yale University, New Haven, Connecticut
• Peer Reviewed:
  True
• Start Date:
  19920930
• Source Full Name:
  Annals of Occupational Hygiene
• End Date:
  19950929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7df893ebe9c8012827433c823c383bc03db35963330fc418c1e6a950c220fc09d2661e1aaf1645362f900506e47e8ff6b6cc8da142a9f38b9308a701615e4427
• Download URL:
  https://stacks.cdc.gov/view/cdc/193111/cdc_193111_DS1.pdf
• File Type:
  [PDF - 133.34 KB ]