Main Title |
Photochemistry of some naturally emitted hydrocarbons / |
Author |
Arnts, Robert R. ;
Gay, Jr, Bruce W.
|
Other Authors |
|
CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. |
Publisher |
Environmental Sciences Research Laboratory, |
Year Published |
1979 |
Report Number |
EPA-600/3-79-081 |
Stock Number |
PB80-131980 |
OCLC Number |
52642715 |
Subjects |
Hydrocarbons ;
Photochemistry
|
Additional Subjects |
Photochemical reactions ;
Hydrocarbons ;
Trees(Plants) ;
Terpene hydrocarbons ;
Atmospheric chemistry ;
Forests ;
Ozone ;
Nitrogen oxides ;
Ultraviolet radiation
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EHAM |
QP82.2.P6E2 79-081 |
|
Region 1 Library/Boston,MA |
04/29/2016 |
EJED |
EPA 600/3-79/081 |
|
OCSPP Chemical Library/Washington,DC |
02/11/2005 |
EKBD |
EPA-600/3-79-081 |
|
Research Triangle Park Library/RTP, NC |
07/18/2003 |
ELBD ARCHIVE |
EPA 600-3-79-081 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ERAD |
EPA 600/3-79-081 |
|
Region 9 Library/San Francisco,CA |
10/22/2012 |
ESAD |
EPA 600-3-79-081 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB80-131980 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
ix, 128 pages : illustrations ; 28 cm. |
Abstract |
Six C10H16 monoterpenes, p-cymene, and isoprene, all known or thought to be emitted to the atmosphere by vegetation, were irradiated in the presence of NOx. The terpenes studied included one acyclic triolefin (myrcene), two monocyclic diolefins (d-limonene, terpinolene), and three bicyclic monolefins (alpha-pinene, beta-pinene, and delta-carene). Propylene was also studied since this olefin serves as a point of reference with other chamber studies. Results showed that monoterpenes and isoprene promoted the oxidation of NO to NO2 and were themselves consumed at rates comparable to or greater than propylene; p-cymene was decidedly slow in these respects. The monoterpenes however did not permit the buildup of ozone due to their rapid reaction with ozone. The ozone suppression was particularly noticeable at high carbon/NOx ratios. Deciduous forests, isoprene emitters, are coniferous forests. Coniferous forests may in fact function as a sink for ozone. Reported ambient concentrations of isoprene and terpenic hydrocarbons in forested areas are too low to account for more than a few ppb of ozone even if NOx is available. |
Notes |
"September 1979." Includes bibliographical references (pages 60-66). |