| Airborne asbestos levels in non-occupational environments in Japan. | |
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MedLine Citation:
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PMID: 2744826 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Airborne asbestos levels in non-occupational environments in Japan were determined by analytical transmission electron microscopy (ATEM) for about 100 air samples from various outdoor settings. Asbestos fibres (chrysotile) were found in almost all samples. The fibre (mass) concentrations were in the range of 4-367 fibres per litre (0.02-47.2 ng/m3) with a geometric mean of 18 f/1 (0.3 ng/m3). The mass concentrations were similar to the earlier data reported from other countries. Samples from main roads showed extremely high asbestos concentrations and short fibre lengths compared with those of the other samples. This strongly suggested that braking of vehicles was a significant emission source of airborne asbestos. Laboratory experiments using a brake testing machine demonstrated that asbestos fibres were released during braking. In addition, the present study found high levels of airborne asbestos in some highly polluted areas, such as a serpentine quarry, a town adjacent to an asbestos mine, and factories making asbestos slate-board. On the other hand, chrysotile fibres were also found in air samples from a small isolated island in the Pacific Ocean as well as in ice samples from ten thousand years ago in Antarctica. These facts suggest that chrysotile fibres have been liberated both by industrial activities and natural weathering, and have circulated around the earth. |
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Authors:
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N Kohyama |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: IARC scientific publications Volume: - ISSN: 0300-5038 ISO Abbreviation: IARC Sci. Publ. Publication Date: 1989 |
Date Detail:
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Created Date: 1989-08-25 Completed Date: 1989-08-25 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8009542 Medline TA: IARC Sci Publ Country: FRANCE |
Other Details:
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Languages: eng Pagination: 262-76 Citation Subset: IM |
Affiliation:
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National Institute of Industrial Health, Ministry of Labour Kawasaki, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Air Pollutants
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analysis* Antarctic Regions Asbestos / analysis* Automobiles Japan Mining |
| Chemical | |
Reg. No./Substance:
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0/Air Pollutants; 1332-21-4/Asbestos |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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