Development of a Personal Bioaerosol Sampler Based on a Conical Cyclone with Recirculating Liquid Film

Details

• Personal Author:
  Brasel T ; Cheng YS ; Sigaev GI ; Sigaev VI ; Tolchinsky AD ; Varfolomeev AN ; Zvyagina EV
• Description:
  This article describes the development of a novel, high-performance personal aerosol sampler intended to monitor occupational air pollution, specifically, microbial constituents. This prototype sampler has a horizontally positioned conical cyclone with recirculating liquid film and an ejection supply of adsorptive liquid into the inlet nozzle. Airborne pollutants were collected in the adsorptive liquid, thus improving the survivability of microbiological aerosol samples. Experimental modules of different dimensions were first evaluated. Based on the test results, a prototype sampler was fabricated and tested. Evaluation of the collection efficiency of the prototype unit indicated a higher than 90% collection efficiency for particles > 1.0 microm. The 50% cutoff diameter was between 0.70-0.75 microm. For assessment of the sampling process effect on the collected microorganisms, Bacillus thuringiensis was tested at a concentration of about 1.0 x 10(6) cells per cm(3). The viability in the prototype sampler decreased to 78% after 60 min of operation. Erratum: [Description provided by NIOSH]
• Subjects:
  Aerosols Air Movements Air Pollutants, Occupational Air Pollution Air Pollution, Indoor Dust Environmental Monitoring Microbiology Occupational Health Particulate Matter Personal Protective Equipment Respiratory System Safety

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• Keywords:
  Aerosol-particles Aerosol-sampling Air-contamination Air-flow Air-monitoring Air-quality Air-sampling Air-sampling-techniques Airborne-particles Author Keywords: Bioaerosol Cyclone Fibrous-dusts Inhalation-studies Microbial-test-systems Microorganisms Monitoring-systems Particle-aerodynamics Particle-counters Particulate-dust Particulate-sampling-methods Personal-protective-equipment Personal Sampler Qualitative-analysis Respirable-dust Statistical-analysis Statistical-quality-control

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• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  New Mexico ; OSHA Region 6
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  156-162
• Volume:
  7
• Issue:
  3
• NIOSHTIC Number:
  nn:20036291
• Citation:
  J Occup Environ Hyg 2010 Mar; 7(3):156-162
• Contact Point Address:
  Yung Sung Cheng, Lovelace Respiratory Research Institute, 2425 Ridgecrest Dr., SE, Albuquerque, NM 87108
• Email:
  ycheng@lrri.org
• Federal Fiscal Year:
  2010
• Performing Organization:
  Lovelace Biomedical & Environmental Research
• Peer Reviewed:
  True
• Start Date:
  20070901
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20110831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8306eeb4634fb2eb060cbf0fd4e9153354ae93a40bc2e43a81446c955aaa505f56dbd9faf71cfc0fd9d7b7924c46a53399becb1e9e7ac2d7d51f3e7e6d78c104
• Download URL:
  https://stacks.cdc.gov/view/cdc/187773/cdc_187773_DS1.pdf
• File Type:
  [PDF - 620.64 KB ]