| Main Title |
Photo-Oxidation of Automobile Emissions: Measurements of the Transformation Products and Their Mutagenic Activity. |
| Author |
Kleindienst, T. E. ;
Smith, D. F. ;
Hudgens, E. E. ;
Snow, R. F. ;
Perry, E. ;
|
| CORP Author |
Health Effects Research Lab., Research Triangle Park, NC. ;ManTech Environmental Technology, Inc., Research Triangle Park, NC. ;Environmental Health Research and Testing, Inc., Research Triangle Park, NC. |
| Publisher |
c1992 |
| Year Published |
1992 |
| Report Number |
EPA/600/J-92/428; |
| Stock Number |
PB93-141273 |
| Additional Subjects |
Exhaust emissions ;
Air pollution sampling ;
Biological effects ;
Photochemical reactions ;
Oxidation ;
Mutagens ;
Automobiles ;
Smog ;
Mobile pollutant sources ;
Mutagen screening ;
Toxicity ;
Concentration(Composition) ;
Bacteria ;
Public health ;
Bioassay ;
Environmental health ;
Reprints ;
Chemical reaction mechanisms ;
Salmonella typhimurium
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB93-141273 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
15p |
| Abstract |
Dilute mixtures of automobile emissions were irradiated in a smog chamber and tested for mutagenic activity by using a variant of the Salmonella test. The exhaust was taken from single vehicle, a 1977 Ford Mustang, equipped with a catalytic converter. Irradiated and nonirradiate gas-phase emissions were used in exposures of the bacteria, Salmonella typhimurium. The mutagenic activities of extracts from the particulate phase were also measured with the standard plate incorporation assay. (In all experiments only direct-acting mutagenic compounds were measured). The gas-phase data showed increased activity for the irradiated emissions when compared to the nonirradiated mixture, which exhibited negligible activity with respect to the control values. The particulate phase for both the irradiated and nonirradiated mixtures showed negligible activity when results were compared to control values for both strains. However, the experimental conditions limited the amount of extractable mass which could be collected in the particulate phase. Under the experimental conditions of this study, the mutagenic density of the gas-phase component of the irradiated mixture contributed approximately two orders of magnitude more to the total TA100 activity than did the particulate phase. For TA98, the gas-phase component contributed approximately one order of magnitude more. The significance and limitations of the results are discussed. |
| Supplementary Notes |
Pub. in Atmospheric Environment, v26A n16 p3039-3053 Nov 92. See also PB91-228759. Prepared in cooperation with ManTech Environmental Technology, Inc., Research Triangle Park, NC., and Environmental Health Research and Testing, Inc., Research Triangle Park, NC. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Photo-Oxidation of Automobile Emissions: Measurements of the Transformation Products and Their Mutagenic Activity. |
| Category Codes |
68A; 57Y; 57K; 99E |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/10 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
307031342 |
| Origin |
NTIS |
| Type |
CAT |
