Development of a transfer function for a personal, thermophoretic nanoparticle sampler

Details

• Personal Author:
  Casuccio G ; Leith D ; Lentz H ; Lersch T ; Marchese A ; Miller-Lionberg D ; Volckens J
• Description:
  Effective assessment of nanoparticle exposures requires accurate characterization of the aerosol. Of increasing concern is personal exposure to engineered nanoparticles that are specifically designed for use in the nanotechnology sector. This manuscript describes the operation and use of a personal sampler that utilizes thermophoretic force to collect nanoparticles onto a standard TEM (transmission electron microscope) grid. After collection, nanoparticles on the TEM grid are analyzed with an electron microscope, and the resultant data used to determine the characteristics of the nanoparticle aerosol sampled. Laboratory experiments were conducted to determine the inlet losses and collection efficiency of the thermophoretic sampler for particles between 20 and 600 nm in diameter. These results are used together with theory for thermophoretic velocity to form a transfer function that relates the properties of the collected particles to the properties of the sampled aerosol. The transfer function utilizes a normalization factor, F(d), which is larger than unity for very small particles but approaches unity for particles larger than about 70 nm. [Description provided by NIOSH]
• Subjects:
  Aerosols Laboratories Microbiology Occupational Health Particulate Matter Safety
• Keywords:
  Aerosol Sampling Analytical Instruments Electron Microscopy Equipment Design Equipment Reliability Equipment Testing Laboratory Testing Microscopic Analysis Nanoparticles Nanotechnology Particle Diameter Particulate Sampling Methods Performance Capability Performance Tests Samplers Sampling Equipment Spectroscopes Thermal Reactions

  More +
• ISSN:
  0278-6826
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  81-89
• Volume:
  48
• Issue:
  1
• NIOSHTIC Number:
  nn:20048747
• Citation:
  Aerosol Sci Technol 2014 Jan; 48(1):81-89
• Contact Point Address:
  John Volckens, Department of Environmental and Radiological Health Sciences, Colorado State University, 1681 Campus Delivery, 350W. Lake St., Fort Collins, CO 80523, USA
• Federal Fiscal Year:
  2014
• Performing Organization:
  Colorado State University - Fort Collins
• Peer Reviewed:
  True
• Start Date:
  20080701
• Source Full Name:
  Aerosol Science and Technology
• End Date:
  20110630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a8ea4562680b18a9f851adb9252acce923932c984b744ecc77609955b1b2d3deecff107b004d3e8370819255662f31ab03ca3463ef42329da24b334274efdc81
• Download URL:
  https://stacks.cdc.gov/view/cdc/203422/cdc_203422_DS1.pdf
• File Type:
  [PDF - 657.33 KB ]