Main Title |
Combined Effects of Organic Reactivity and NMHC/NOx Ratio on Photochemical Oxidant Formation - A Modeling Study. |
Author |
Dodge, M. C. ;
|
CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. |
Year Published |
1984 |
Report Number |
EPA/600/J-84/403; |
Stock Number |
PB87-180659 |
Additional Subjects |
Reactivity ;
Photochemical reactions ;
Exhaust emissions ;
Smog ;
Air pollution control ;
Models ;
Reprints ;
Organic compounds ;
Photochemical oxidants
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB87-180659 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
11p |
Abstract |
A modeling study was undertaken to assess the effect of organic reactivity on photochemical oxidant formation. A six-component hydrocarbon model was developed and tested against data collected in a smog chamber study of irradiated auto exhaust and oxides of nitrogen (NO sub x) mixtures. The model was then adjusted to conditions that are closely approximated those of the urban environment and used to assess the relative reactivity of various organic constituents present in an urban-like air mass. Twelve organics were investigated in the study: ethane, propane, n-butane, ethylene, propylene, trans-2-butene, toluene, m-xylene, methanol, ethanol, formalehyde, and acetaldehyde. The findings of this study indicate that the reactivity of organics depends strongly on the hydrocarbon-to-NO sub x ratio of the mix in which they are reacting. At low hydrocarbon-to-NO sub x ratios, the organics investigated in this study displayed significantly different O sub 3-forming potentials. At high hydrocarbon-to-NO sub x ratios, however, all organics exhibited comparable O to 3-forming potential. |
Supplementary Notes |
Pub. in Atmospheric Environment, v18 n8 p1657-1665 1984. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Combined Effects of Organic Reactivity and NMHC/NOx Ratio on Photochemical Oxidant Formation - A Modeling Study. |
PUB Date Free Form |
1984 |
Category Codes |
68A; 99A |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
718322428 |
Origin |
NTIS |
Type |
CAT |