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WOODSMOKE AND MOTOR VEHICLE CONTRIBUTION TO AMBIENT AEROSOL MUTAGENICITY
Citation:
Lewis, C., R. Baumgardner, L. Claxton, J. Lewtas, AND R. Stevens. WOODSMOKE AND MOTOR VEHICLE CONTRIBUTION TO AMBIENT AEROSOL MUTAGENICITY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-88/325 (NTIS PB89206734).
Description:
A receptor model analysis of the mutagenicity of ambient fine particles in air samples collected under EPA's Integrated Air Cancer Project has been performed. he analysis was based on multiple linear regression, using measured concentrations of inorganic chemical elements which are good indicators of likely sources of the mutagenicity. his has allowed the determination of the separate contributions made by woodsmoke and mobile sources to the mutagenicitv measured in a residential neighborhood in Albuquerque, NM. uring January and February, 1985, these two sources were found to be nearly equal contributors to the average mutagenic concentration (revertants/m3) of the fine particle ambient aerosol. owever, mutagenic potency (revertants /ug extractable organics) of fine particles originating from mobile sources was three times greater than those with a woodsmoke origin. he result is generally consistent with the known potencies of these sources, based on source measurements.