Main Title |
Photochemical aerosol dynamics / |
Author |
Friedlander, Sheldon K.
|
Other Authors |
|
CORP Author |
California Inst. of Tech., Pasadena. Dept. of Chemical Engineering.;Environmental Sciences Research Lab., Research Triangle Park, NC. |
Publisher |
Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
Year Published |
1979 |
Report Number |
EPA 600-3-79-052; EPA-R-802160; PB299212 |
Stock Number |
PB-299 212 |
OCLC Number |
52642688 |
Subjects |
Aerosols ;
Air--Pollution ;
Photochemistry--Research
|
Additional Subjects |
Air pollution ;
Aerosols ;
Photochemical reactions ;
Particle size distribution ;
Reaction kinetics ;
Cyclopentene ;
Cyclohexene ;
Particles ;
Sulfates ;
Inorganic nitrates ;
Nucleation ;
Organic compounds ;
Smog ;
Atmospheric chemistry ;
Heterogeneous reactions ;
Homogeneous reactions ;
Octadiene
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EHAM |
EPA-600/3-79-052 |
|
Region 1 Library/Boston,MA |
05/25/2016 |
EJBD |
EPA 600-3-79-052 |
|
Headquarters Library/Washington,DC |
01/09/2020 |
EKBD |
EPA-600/3-79-052 |
|
Research Triangle Park Library/RTP, NC |
07/18/2003 |
ELBD ARCHIVE |
EPA 600-3-79-052 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ERAD |
EPA 600/3-79-052 |
|
Region 9 Library/San Francisco,CA |
10/22/2012 |
ESAD |
EPA 600-3-79-052 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-299 212 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
vii, 38 pages : illustrations ; 28 cm |
Abstract |
New data are reported on (1) the rate of formation of condensable chemical species by photochemical reactions, (2) the effect of the reaction products on the particle size distribution and (3) the distribution of reaction products as a function of particle size. Gas-to-particle conversion for cyclopentene, cyclohexene and 1,7--octadiene, ranged from 5 to 39 percent of the initial gas-phase carbon concentrations. Size distribution data for cyclohexene were correlated by a diffusion controlled growth law with Kelvin cutoff diameter at about 0.25 micrometer. In polluted atmospheres, some new particle formation takes place as a result of homogeneous gas phase reactions even though an aerosol is already present. To explain the results of laboratory studies of this phenomenon, classical nucleation theory must be modified to take into account the scavenging of clusters by the aerosol. Using a new low pressure impactor, the first measurements have been made of the distributions of sulfate and nitrate with respect to particle size for dp < 0.25 micrometer. In Pasadena, the data for sulfate often show a peak in the mass distribution for 0.6 < dp < 1.0 micrometer; less often, a peak is observed near 0.1 micrometer, consistent with laboratory data for aerosols formed by homogeneous gas phase reactions. |
Notes |
Project Officer: Jack L. Durham. "EPA 600-3-79-052." "May 1979." Cover title. Includes bibliographical references. California Institute of Technology |
Place Published |
Research Triangle Park, N.C. |
Access Notes |
Also available via the World Wide Web. |
Corporate Au Added Ent |
Environmental Sciences Research Laboratory.; United States. Environmental Protection Agency. Office of Research and Development.; United States. Environmental Protection Agency.; California Institute of Technology. |
Title Ser Add Ent |
Research reporting series. Ecological research ; EPA-600/3-79-052. |
PUB Date Free Form |
1979 |
Series Title Traced |
Research reporting series Ecological research; EPA-600/3-79-052 |
Series Title Untraced |
Research reporting series. 3, Ecological research ; EPA 600-3-79-052 |
NTIS Prices |
PC A03/MF A01 |
BIB Level |
m |
Medium |
unmediated |
Content |
text |
Carrier |
volume |
Cataloging Source |
OCLC/T |
OCLC Time Stamp |
20160419143716 |
Language |
eng |
Origin |
OCLC |
Type |
MERGE |
OCLC Rec Leader |
02008cam 2200469Ki 45020 |