Optimization of the Design of a Semivolatile Aerosol Dichotomous Sampler

Details

• Personal Author:
  Kim SW ; Raynor PC
• Description:
  This article reports the results of an optimization procedure for a semivolatile aerosol dichotomous sampler (SADS) and experimental confirmation of the instrument's performance with an optimized sampler. Using numerical model results, the relationships between four major design and operating parameters significantly affecting the performance of the SADS and four performance parameters were expressed in log polynomial equations. Utilizing an optimization procedure, values for the major parameters giving the best performance were determined and used as the base model for optimizing minor parameters. Five minor parameters were then investigated for their possible contribution to better performance of the SADS. The optimal dimensions found were as follows: the diameter ratio between the nozzle and the collection probe was 1.30 and the length ratio of the distance between the nozzle and the collection probe divided by the nozzle diameter was 0.6. Among the minor parameters, only the entrance angle of the nozzle made noticeable improvement at 45 degrees. Experimental tests confirmed that the performance of the new sampler was improved although not as much as expected from the numerical simulation. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Movements Environmental Monitoring Filtration Laboratories Occupational Health Particulate Matter Safety
• Keywords:
  Aerosol-particles Aerosol-sampling Air-flow Air-monitoring Air-sampling Air-sampling-equipment Air-sampling-techniques Filters Laboratory-techniques Mathematical-models Particle-aerodynamics Particle-counters Particulate-sampling-methods Particulates Quantitative-analysis Statistical-analysis

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• ISSN:
  0278-6826
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  129-140
• Volume:
  43
• Issue:
  10
• NIOSHTIC Number:
  nn:20036489
• Citation:
  Aerosol Sci Technol 2010 Feb; 44(2):129-140
• Contact Point Address:
  Seung Won Kim, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Health Effects Laboratory Division, 1095 Willowdale Rd, MS 3030, Morgantown, WV 26505
• Email:
  seungwon.kim@cdc.hhs.gov
• Federal Fiscal Year:
  2010
• Peer Reviewed:
  True
• Source Full Name:
  Aerosol Science and Technology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7c0fbdbd83f20902184193411c0c37b8bf70753be76486d11ac609a0d2cc55ec6f8f6296ead5a5d2a6a8b0141df7eb2a270aa11bb7055de23133da59ad76a7cd
• Download URL:
  https://stacks.cdc.gov/view/cdc/187892/cdc_187892_DS1.pdf
• File Type:
  [PDF - 708.17 KB ]