The physical and chemical characteristics of particles in indoor air where high fluoride coal burning takes place
- Institute of Environmental Health and Engineering, Chinese Academy of Preventive Medicine, Beijing (China)
In China, more than 10 million people suffer from fluorosis caused by the burning of high fluoride coal. Analysis of the particulate matters of indoor air from these fluorosis areas reveals a logarithmic distribution of particle sizes. The levels of F- and SO4(2-) adsorbed or absorbed on the particles ranged from 16.27 to 46.18 micrograms/m3 and from 244.7 to 374.6 micrograms/m3, respectively. Gaseous and soluble fluorides constituted a considerable proportion of the inorganic fluorides. Nevertheless, the level of F- in air was considered to be inadequate to cause the observed severity of fluorosis. It is speculated that additional intake of F- from contaminated foods might also be a major factor contributing to the fluorosis. Additionally, some volatile elements (e.g., sulfur and its derivatives) might have some relation to fluorosis of this type.
- OSTI ID:
- 5655616
- Journal Information:
- Biomedical and Environmental Sciences; (United States), Vol. 3:4; ISSN 0895-3988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
54 ENVIRONMENTAL SCIENCES
CHINA
INDOOR AIR POLLUTION
FLUORIDES
TOXICITY
RESPIRATORY SYSTEM DISEASES
EPIDEMIOLOGY
AIR POLLUTION MONITORING
COAL
COMBUSTION PRODUCTS
ECOLOGICAL CONCENTRATION
MAN
PARTICLE SIZE
AIR POLLUTION
ANIMALS
ASIA
CARBONACEOUS MATERIALS
DISEASES
ENERGY SOURCES
FLUORINE COMPOUNDS
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
MAMMALS
MATERIALS
MONITORING
POLLUTION
PRIMATES
SIZE
VERTEBRATES
016000* - Coal
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560300 - Chemicals Metabolism & Toxicology
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)