Aerosolization of carbon nanotubes using an acoustic generator: particle generation and properties

Details

• Personal Author:
  Birch, M. Eileen ; Ku BK
• Description:
  With increasing applications and global production of carbon nanomaterials, there is a growing concern about workplace exposure. The National Institute for Occupational Safety and Health (NIOSH) has recommended a working lifetime exposure limit (REL of 1 ug/m3, 8-h TWA, 45 years) to minimize the potential health risks associated with occupational exposure to carbon nanotubes and nanofibers (CNTs and CNFs) (NIOSH, 2013). Because of the large variety of CNT and CNF products, with varying physical and chemical properties (e.g., highly non-spherical fibrous structures), characterization of their properties and exposure risks is challenging. In addition to work processes, the inhalation risks of carbon nanomaterials depend on material properties, which affect both their toxicity and tendency for air dispersion (Ku et al., 2006). It is therefore important to investigate a variety of carbon nanomaterials to determine: 1) their potential for aerosolization, and 2) the residence time and size distribution of the generated aerosol particles. In this study, we investigated the aerodynamic behavior of CNT powders. The powders were aerosolized using an acoustic generator and their aerodynamic and mobility diameters were determined. Aerosol decay and the characteristics of particle generation were also investigated [Description provided by NIOSH]
• Subjects:
  Aerosols Chemistry Occupational Health Particulate Matter Risk Assessment Risk Factors Safety Workplace
• Keywords:
  Acoustic Generator Aerosol Aerosol-particles Author Keywords: Aerosolization Carbon-compounds Carbon Nanotube Chemical-properties Exposure-levels Fibrous-bodies Nanotechnology Particulates Physical-properties Risk-factors Work-environment Workers

  More +
• ISBN:
  9781498747332
• 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
• Volume:
  1
• Issue:
  10
• NIOSHTIC Number:
  nn:20046460
• Citation:
  TechConnect Briefs 2015: Technical Proceedings of the 2015 TechConnect World Innovation Conference & Expo; Volume 1 - Advanced Materials; Session 10 - Soft Matter & Colloids, June 15-18, 2015, Washington, DC. Boca Raton, FL: CRC Press, 2015 Jun; 1(10):585-587
• Email:
  bku@cdc.gov
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Manufacturing
• Peer Reviewed:
  False
• Source Full Name:
  TechConnect Briefs 2015: Technical Proceedings of the 2015 TechConnect World Innovation Conference & Expo; Volume 1 - Advanced Materials; Session 1 - Nanoscale Materials Characterization, June 15-18, 2015, Washington, DC
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:bee99987b1bd975d036c20096890151b4dd55d67c1526502f3387eb4f217e160699f882a6a7ccf910657718b86c0fafe1d4ef8f1540b53a69952efaeef36fa19
• Download URL:
  https://stacks.cdc.gov/view/cdc/201514/cdc_201514_DS1.pdf
• File Type:
  [PDF - 693.39 KB ]