Wood smoke: measurement of the mutagenic activities of its gas- and particulate-phase photooxidation products

Dilute mixtures of wood combustion emissions (with and without additional NO sub(x)) were irradiated in a 22.7-m super(3) Teflon smog chamber. The effluent was tested for mutagenic activity by exposing Salmonella typhimurium), strains TA100 and TA98, to the filtered gas-phase components. The particu...

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Bibliographic Details
Published in:Environmental science & technology 1986-05, Vol.20 (5), p.493-501
Main Authors: Kleindienst, Tadeusz E, Shepson, Paul B, Edney, Edward O, Claxton, Larry D, Cupitt, Larry T
Format: Article
Language:English
Subjects:
AIR POLLUTION
BOIS DE CHAUFFAGE
CONTAMINACION DEL AIRE
FUELWOOD
GASES
GAZ
IRRADIACION
IRRADIATION
LENA
MEASUREMENT
MEDICION
MESURE
MUTAGENE
MUTAGENOS
MUTAGENS
POLLUTION ATMOSPHERIQUE
Salmonella typhimurium
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Summary:Dilute mixtures of wood combustion emissions (with and without additional NO sub(x)) were irradiated in a 22.7-m super(3) Teflon smog chamber. The effluent was tested for mutagenic activity by exposing Salmonella typhimurium), strains TA100 and TA98, to the filtered gas-phase components. The particulate matter was tested by using the plate incorporation procedure. Without added NO sub(x), irradiated dilute wood smoke showed a measurable increase in mutagenic activity for gas-phase products only. Additional NO sub(x) was added in other irradiations to enhance the formation of gas- and particulate-phase products. Although only lower and upper limits were obtainable, the gas-phase products showed considerably more activity (1.1-8.2 revertants/ mu g) in TA100 exposures than did the particulate product extracts. With TA98 the activities of both phases were comparable on a mass basis. Since the total quantity of gas-phase components was greater than the particulate-phase components, the mutagenic activity on a volume basis was greater for the gas phase.
ISSN:0013-936X
1520-5851
DOI:10.1021/es00147a009