Characterization of screen-penetrating aerosol fibers and their alignment in an electric field

Details

• Personal Author:
  Deye G ; Ku BK ; Turkevich LA
• Description:
  Length classification of airborne fibers, including carbon nanotubes/nanofibers, is a fundamental technology important for toxicology studies of these materials. Fiber toxicity appears to depend on fiber concentration, dimensions (diameter and length) and durability in the lungs. Recently, the National Institute for Occupational Safety and Health (NIOSH) has published a Roadmap for research of asbestos fibers and other elongate mineral particles (EMPs) (NIOSH, 2011). An underlying theme is that, in order to better understand the toxicity of fibers, it is necessary to develop methods for classifying fibers by length so as to enable toxicology studies to directly test length as a salient parameter. Researchers have used a variety of approaches to separate fibers by length; Spurny et al. (1979) used liquid sedimentation, and Baron and colleagues (Baron et al., 1994; Deye et al., 1999) developed a dielectrophoresis-based fiber length classifier (FLC). Several studies were conducted using a screen as a low-pass filter for length classification (Spurny et al., 1979; Myojo, 1999). Considering the promise of using screens, but the heretofore limited quantitative results, we have explored the use of screens (housed in asbestos sampling cassettes) as a length separation method of airborne fibers in the micrometer size range. Fiber alignment in an electric field was also investigated as a way to improve screen collection. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Asbestos Hazardous Substances Inorganic Chemicals Lung Occupational Health Particulate Matter Respiratory System Safety Toxicology
• Keywords:
  Aerosol Airborne-fibers Alignment Asbestos-fibers Author Keywords: Glass Fiber Electric Field Fiber Length Filters Mesh Screens Nanotechnology Particulates Toxic-effects

  More +
• ISBN:
  9781482258301
• Publisher:
  CRC Press
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  166-169
• Volume:
  3
• NIOSHTIC Number:
  nn:20045265
• Citation:
  Nanotech 2014: electronics, manufacturing, environment, energy & water, technical proceedings of the 2014 NSTI nanotechnology conference and expo, June 15-18, 2014, Washington, DC. Nano Science and Technology Institute (NSTI), ed. Boca Raton, FL: CRC Press, 2014 Jun; 3:166-169
• Email:
  bku@cdc.gov
• Editor(s):
  Nano Science and Technology Institute (NSTI)
• Federal Fiscal Year:
  2014
• NORA Priority Area:
  Manufacturing ; Mining
• Peer Reviewed:
  False
• Source Full Name:
  Nanotech 2014: electronics, manufacturing, environment, energy & water, technical proceedings of the 2014 NSTI nanotechnology conference and expo, June 15-18, 2014, Washington, DC
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8e1dd8bd48ef451c1b05e96c3bdf3ef360070eb533efeb95ba0afdb1ffdb2b8536c9082794ccb616b54a0becc87b029af446c9b22639a34b425cb78d2473366c
• Download URL:
  https://stacks.cdc.gov/view/cdc/200736/cdc_200736_DS1.pdf
• File Type:
  [PDF - 895.07 KB ]