Collection Efficiency of a Personal Cyclone Sampler

Details

• Personal Author:
  Celik I ; Nanduri J ; Parsons D
• Description:
  Public exposure to viral agents, especially influenza, is of great concern in workplaces such as schools, office buildings and hospitals. The assessment of personal exposure risk factors in such environments requires efficient and accurate sampling methods valid for both short- and long-term, area and/or personal samples. The National Institute of Occupational Safety and Health (NIOSH) recently developed prototypes for single and two-stage personal aerosol samplers that operate on the principles of a cyclone. The innovative design makes use of commercially available microcentrifuge tubes of various designs that can be attached to the sampler. Since the collection of bio-aerosols takes place in these microcentrifuge tubes, the design has the added advantage of zero transfer losses, hence eliminating the sample transfer step. In the current study Computational Fluid Dynamic (CFD) simulations are performed on both the single and two-stage designs to assess the collection efficiency of the cyclone samplers for various particle sizes and flow rates. Initial validation studies were conducted with particle diameters ranging from 0.5 to 16 um for the single stage sampler and 0.5 to 6 um for the two-stage sampler. The inlet flow rates of 2 and 4 LPM for the single stage sampler and 2 and 3.5 LPM for the two-stage sampler were adopted in order to match the experimental conditions. Results showed good agreement with the experimental data for both the single stage and two-stage samplers, thus opening the way to use CFD for virtual sampling in field studies. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Movements Communicable Diseases Influenza, Human Occupational Exposure Occupational Health Respiratory System Respiratory Tract Diseases Safety Viral Diseases
• Keywords:
  Aerosol Particles Air Flow Bioaerosols Infectious Diseases Influenza Models Occupational Exposure Respiratory Diseases Samplers Sampling Equipment Viral Diseases

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• ISBN:
  9781901769156
• Publisher:
  International Medical Press
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• NIOSHTIC Number:
  nn:20060586
• Citation:
  Proceedings of the International Conference on Options for the Control of Influenza VI, June 17-23, 2007, Toronto, Ontario, Canada. Katz JM ed. London: International Medical Press, 2008 Jan; :504-505
• Editor(s):
  Katz JM
• Federal Fiscal Year:
  2008
• Performing Organization:
  West Virginia University
• Peer Reviewed:
  False
• Start Date:
  20060801
• Source Full Name:
  Proceedings of the International Conference on Options for the Control of Influenza VI, June 17-23, 2007, Toronto, Ontario, Canada
• End Date:
  20100831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:70b45443ed2b75da99e1ae7f89338839125125c99e19c7bc847ec890b1d29abfa3fc2ee73e047989fa3c558e4d56b393807e42fcb48d865ece1c945eccd98d8e
• Download URL:
  https://stacks.cdc.gov/view/cdc/224448/cdc_224448_DS1.pdf
• File Type:
  [PDF - 492.87 KB ]