Physical Factors Affecting the Mutagenicity of Fly Ash from a Coal-Fired Power Plant

The two finest, most respirable coal fly ash fractions collected from the smokestack of a power plant were more mutagenic than two coarser fractions. Mutagenicity was evaluated in the histidine-requiring bacterial strains TA 1538, TA 98, and TA 100 of Salmonella typhimurium. Ash samples collected fr...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1979-05, Vol.204 (4395), p.879-881
Main Authors: Fisher, G. L., Chrisp, C. E., Raabe, O. G.
Format: Article
Language:English
Subjects:
Air Pollutants - toxicity
Carcinogens
Coal
Coal fired power plants
Coal fly ash
Coal, Pulverized
Fly ash
Hot Temperature
Industry
Irradiation
Mutagenicity
Mutagens
Power Plants
Pulverized coal
Radiation Effects
Salmonella typhimurium - drug effects
Structure-Activity Relationship
Temperature gradients
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Summary:The two finest, most respirable coal fly ash fractions collected from the smokestack of a power plant were more mutagenic than two coarser fractions. Mutagenicity was evaluated in the histidine-requiring bacterial strains TA 1538, TA 98, and TA 100 of Salmonella typhimurium. Ash samples collected from the hoppers of an electrostatic precipitator in the plant were not mutagenic. The mutagens in coal fly ash were resistant to x-ray or ultraviolet irradiation, possibly as a result of stabilization by fly ash surfaces. All mutagenic activity is lost with heating to 350°C.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.375394