Main Title |
Contribution of Woodsmoke and Motor Vehicle Emissions to Ambient Aerosol Mutagenicity (Journal Version). |
Author |
Lewis, C. W. ;
Baumgardner, R. E. ;
Stevens, R. K. ;
Claxton, L. D. ;
Lewtas, J. ;
|
CORP Author |
Health Effects Research Lab., Research Triangle Park, NC. |
Publisher |
Aug 88 |
Year Published |
1988 |
Report Number |
EPA/600/J-88/237; |
Stock Number |
PB89-142749 |
Additional Subjects |
Aerosols ;
Exhaust emissions ;
Motor vehicles ;
Wood ;
Mutagens ;
Residential buildings ;
Bioassays ;
Carcinogens ;
Fines ;
Sources ;
Concentration(Composition) ;
Trace elements ;
Sampling ;
Air pollution ;
Reprints ;
Air pollution effects(Humans)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB89-142749 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
7p |
Abstract |
Mutagenicity is frequently considered as a screening test for the carcinogenicity of compounds to which humans are exposed. Past estimates of the mutagenicity of ambient aerosol have depended on measurements of the mutagenic potency (refertants/microg) of the extractable organic matter (EOM) in Salmonella typhimurium from specific source emissions and their mass emission rate. This source-oriented approach requires an explicit model for the dispersion and possible transformation of the mutagens in the atmosphere. However, a receptor-oriented approach, demonstrated here, requires only ambient measurements of mutagenicity and of trace elements that are markers for the suspected sources of the mutagens. During winter at a residential site, woodsmoke and motor vehicle emissions were found to make nearly equal contributions to the average mutagenic concentration (refertants/cu m) of the fine particle ambient aerosol. Mutagenic potency of the fine particle EOM traced to motor vehicles, however, was three times greater than that with a woodsmoke origin. The results are consistent with the known potency of these sources, from source measurements. |
Supplementary Notes |
Pub. in Environmental Science and Technology, v22 n8 p968-971 Aug 88. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Contribution of Woodsmoke and Motor Vehicle Emissions to Ambient Aerosol Mutagenicity (Journal Version). |
Category Codes |
68G; 68A; 57U |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/11 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
908926933 |
Origin |
NTIS |
Type |
CAT |