Design and Performance of UPAS Inlets for Respirable and Thoracic Mass Sampling

Details

• Personal Author:
  Leith D ; L'Orange C ; Mehaffy J ; Volckens J
• Description:
  The Ultrasonic Personal Aerosol Sampler (UPAS) is a small, lightweight, and quiet sampler that collects airborne particulate matter on a filter for gravimetric or compositional analysis. The objective of this work was to develop UPAS inlets with collection efficiencies that match criteria for respirable or thoracic mass sampling. The two-stage inlet for respirable mass described here utilizes an impaction stage and a cyclone, whereas the one-stage inlet for thoracic mass sampling utilizes a circular slot impactor. Inlet designs are based on particle collection theory used in conjunction with an optimization algorithm to predict initial inlet dimensions; these predictions were the starting points for experiments that finalized dimensions and operating conditions. Both the respirable mass inlet and the thoracic mass inlet described here are interchangeable with the UPAS, and both have efficiencies that match well with their respective standards. With either inlet, the collected sample should be within +/- 5% of what the standard specifies for aerosols with reasonably broad size distributions. [Description provided by NIOSH]
• Subjects:
  Aerosols Dust Occupational Health Particulate Matter Safety
• Keywords:
  Aerosol Sampling Author Keywords: Dust Equipment Design Exposure Assessment Particle Particulates Personal Sampler Respirable Criterion Respirable Dust Samplers Sampling Equipment Thoracic Criterion

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• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; North Carolina ; OSHA Region 4 ; OSHA Region 8
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  274-282
• Volume:
  17
• Issue:
  6
• NIOSHTIC Number:
  nn:20061823
• Citation:
  J Occup Environ Hyg 2020 Jun; 17(6):274-282
• Contact Point Address:
  John Volckens, Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado 80523, USA
• Email:
  john.volckens@colostate.edu
• Federal Fiscal Year:
  2020
• Performing Organization:
  Colorado State University, Fort Collins
• Peer Reviewed:
  True
• Start Date:
  20150901
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20190831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:493d8e8f93b74aba862f211b0b85169d958697061df0e711be62dccd72726930fe1acb3c35e775647419c695adbb567ca58648928779bac290b9b84eccdab940
• Download URL:
  https://stacks.cdc.gov/view/cdc/225196/cdc_225196_DS1.pdf
• File Type:
  [PDF - 986.65 KB ]