Release of asbestos fibers from weathered and corroded asbestos cement products

Journal Article · Wed Feb 01 04:00:00 EST 1989 · Environ. Res.; (United States)

DOI:https://doi.org/10.1016/S0013-9351(89)80089-1· OSTI ID:6328720

Spurny, K R

The controversy on whether weathered and corroded asbestos cement products are emitting biologically significant asbestos fiber concentrations in ambient air has not been resolved. Nor is it known if the weathered and corroded asbestos cement products release asbestos fibers which have the same carcinogenic potency as standard chrysotile. The purpose of this research project was to develop a method for sampling and measuring asbestos fiber emissions from solid planar surfaces (i.e., roofs and facades) consisting of asbestos cement products and to develop methods for studying the physical and chemical changes and the carcinogenic potency of the emitted fibers. Using this method asbestos fiber emissions in ambient air have been measured in the FRG during 1984/1986. The emissions of asbestos fibers longer than 5 microns were in the range 10(6) to 10(8) fibers/m2.hr. The ambient air concentrations of these asbestos fibers were for the most part less than 10(3) fibers/m3. It was shown that the emitted asbestos fibers were chemically changed and it was shown with animal experiments that their carcinogenic potency did not differ from the carcinogenicity of standard chrysotile fibers.

• Research Organization: Fraunhofer Institute for Environmental Chemistry and Ecotoxicology, Schmallenberg-Grafschaft (Germany, F.R.)
• OSTI ID: 6328720
• Journal Information: Environ. Res.; (United States), Journal Name: Environ. Res.; (United States) Vol. 48:1; ISSN ENVRA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
AIR POLLUTION MONITORING
ANIMALS
ASBESTOS
CARCINOGENESIS
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
CORROSION
ECOLOGICAL CONCENTRATION
MAMMALS
MEASURING METHODS
PARTICLE SIZE
PATHOGENESIS
PHYSICAL PROPERTIES
POLLUTION
RATS
RODENTS
SAMPLING
SIZE
TOXICITY
VERTEBRATES
WEATHERING