Inhalable fibrous material.

Details

• Personal Author:
  Cralley LJ
• Description:
  The occurrence of respirable fibrous materials in the environment was discussed. Sources of inhalable fibrous materials were reviewed. Natural minerals constitute a major source of respirable fibers. There are more than 100 different natural minerals that have some degree of fibrous character. Silicates constitute the most important group of fibrous materials and are the most important constituent of the earth's rocks and crust. Exposures to respirable fibers arise from natural forces such as dust storms, industrial processes, and personal habits, such as using talcum powder. Synthetic mineral fibers and their uses were mentioned. Synthetic organic fibers and their uses were summarized. Fibrous animal and vegetable materials were discussed. Typical examples of respirable fibrous materials associated with commercial and domestic products were illustrated. Analytical techniques for identifying fibrous materials were summarized, including electron microscopy, electron diffraction, laser spectroscopy, electron microprobe, and laser microprobe used in conjunction with time of flight mass spectrometry. It was noted that because of the very small size of individual respirable fibers, a single method is usually not sufficient to identify individual fibers, especially inhaled fibers which are usually transformed by biological processes. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Dust Environmental Exposure Minerals Occupational Health Safety Silicon Dioxide
• Keywords:
  Fibrous-dusts; Dust-inhalation; Airborne-fibers; Analytical-methods; Nonmetallic-minerals; Silica-dusts; Environmental-exposure; Synthetic-fibers
• Publisher:
  Cape Town
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  70-73
• NIOSHTIC Number:
  nn:00177489
• Citation:
  Pneumoconiosis, Proceedings of the International Conference, Johannesburg 1969. 1970 Jan; :70-73
• Editor(s):
  Shapiro HA
• Federal Fiscal Year:
  1970
• Peer Reviewed:
  False
• Source Full Name:
  Pneumoconiosis, Proceedings of the International Conference, Johannesburg 1969
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/242454/cdc_242454_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]