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Abstract
An ambient air sampling program was conducted in a wood smoke impacted residential area of Juneau, Alaska during the winter of 1985-86. This study was undertaken to determine the bacterial mutagenicity (Ames test) and chemical characteristics of respirable participate matter collected in this area. Fine particle (0-2.5 μm) concentrations for the sampling period of November 16th to January 7th ranged from 1.19 to 209.8 μg/m3. Bioassay samples from ambient air fine particle concentration periods of 25.6 to 209.8 μg/m3 showed indirect acting mutagenicity of 6.64 to 77.8 rev/m3 with a mutagenicity/particle concentration correlation coefficient of 0.89. The indirect acting mutagenic potency values ranged from 0.29 to 1.44 rev/μg of extracted organics and averaged 0.73 ± 0.26. Correlations between fine particle concentration, indirect acting mutagenicity and PAH concentrations were observed for most periods throughout the study. A comparison of ambient air samples collected from wood smoke impacted residential areas in Raleigh, NC; Albuquerque, NM; and Juneau, AK showed that the relationship between ambient air mutagenicity and fine particle concentration was similar for each location.