Utility of dark-field electron microscopy in the determination of the degree of deformation in chrysotile asbestos: environmental research application
Journal Article
·
· Environ. Res.; (United States)
The degree of microcrystalline deformation in fibers of chrysotile asbestos may be distinguished using high resolution dark-field electron microscopy. This is demonstrated by comparing undeformed chrysotile with Union Internationale Contre le Cancer (UICC) standard reference samples. The UICC samples are shown to be partially deformed as a result of milling in the mixing process. Samples of used and unused brake shoe lining dust were examined using this technique; it is shown that chrysotile asbestos in various stages of deformation--relatively undeformed to heavily deformed--survives in automobile brake drum dust. Such dark-field images can serve to identify the source of asbestos found in environmental pollution samples.
- Research Organization:
- Lawrence Berkeley Lab., CA
- OSTI ID:
- 6471863
- Journal Information:
- Environ. Res.; (United States), Journal Name: Environ. Res.; (United States) Vol. 16; ISSN ENVRA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ASBESTOS
BRAKES
DEFORMATION
DUSTS
ELECTRON MICROSCOPY
MACHINE PARTS
MEASURING METHODS
MICROSCOPY
PHYSICAL PROPERTIES
POLLUTION
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ASBESTOS
BRAKES
DEFORMATION
DUSTS
ELECTRON MICROSCOPY
MACHINE PARTS
MEASURING METHODS
MICROSCOPY
PHYSICAL PROPERTIES
POLLUTION