Assessment of increased sampling pump flow rates in a disposable, inhalable aerosol sampler

Details

• Personal Author:
  Anthony, T. Renée ; Handy RG ; Pahler LF ; Sleeth DK ; Stewart J ; Volckens J
• Description:
  A newly designed, low-cost, disposable inhalable aerosol sampler was developed to assess workers personal exposure to inhalable particles. This sampler was originally designed to operate at 10 L/min to increase sample mass and, therefore, improve analytical detection limits for filter-based methods. Computational fluid dynamics modeling revealed that sampler performance (relative to aerosol inhalability criteria) would not differ substantially at sampler flows of 2 and 10 L/min. With this in mind, the newly designed inhalable aerosol sampler was tested in a wind tunnel, simultaneously, at flows of 2 and 10 L/min flow. A mannequin was equipped with 6 sampler/pump assemblies (three pumps operated at 2 L/min and three pumps at 10 L/min) inside a wind tunnel, operated at 0.2 m/s, which has been shown to be a typical indoor workplace wind speed. In separate tests, four different particle sizes were injected to determine if the sampler's performance with the new 10 L/min flow rate significantly differed to that at 2 L/min. A comparison between inhalable mass concentrations using a Wilcoxon signed rank test found no significant difference in the concentration of particles sampled at 10 and 2 L/min for all particle sizes tested. Our results suggest that this new aerosol sampler is a versatile tool that can improve exposure assessment capabilities for the practicing industrial hygienist by improving the limit of detection and allowing for shorting sampling times. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Movements Air Pollutants, Occupational Environmental Monitoring Inhalation Exposure Laboratories Occupational Health Particulate Matter Respiratory System Safety
• Keywords:
  Aerosol Sampling Airborne Particles Air Flow Air Samplers Air Sampling Air Sampling Equipment Analytical Instruments Author Keywords: Aerosols Detectors Equipment Design Equipment Reliability Equipment Testing Exposure Assessment High-flow Industrial Hygiene Inhalable Sampler Inhalants Inhalation Laboratory Testing Particle Aerodynamics Particle Size Performance Capability Performance Tests Samplers Sampling Wind Tunnel

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• ISSN:
  1545-9624
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; Iowa ; OSHA Region 7 ; OSHA Region 8 ; Utah
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  207-213
• Volume:
  14
• Issue:
  3
• NIOSHTIC Number:
  nn:20048706
• Citation:
  J Occup Environ Hyg 2017 Mar; 14(3):207-213
• Contact Point Address:
  Darrah K. Sleeth, Department of Family and Preventive Medicine, University of Utah, Salt Lake City, UT 84108
• Email:
  darrah.sleeth@hsc.utah.edu
• Federal Fiscal Year:
  2017
• Performing Organization:
  Colorado State University, Fort Collins
• Peer Reviewed:
  True
• Start Date:
  20120701
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• End Date:
  20170630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5ece9bdfaacefa403a36e7f3c0abaa143123e17e918c3f48585754ab680489e36fea8cfca9de907a37a8799d9368f3afbd2a208b1833a8045a5c8f1dc6aa437f
• Download URL:
  https://stacks.cdc.gov/view/cdc/203396/cdc_203396_DS1.pdf
• File Type:
  [PDF - 801.81 KB ]