| Main Title |
Application of Fourier transform spectroscopy to air pollution problems : interim report - 1976 / |
| Author |
Calvert, Jack G.
|
| Other Authors |
|
| CORP Author |
Ohio State Univ. Research Foundation, Columbus.;Environmental Sciences Research Lab., Research Triangle Park, N.C. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory, |
| Year Published |
1977 |
| Report Number |
EPA-600/3-77-025; EPA-R-803868-1 |
| Stock Number |
PB-272 891 |
| OCLC Number |
52399412 |
| Subjects |
Fourier transform spectroscopy ;
Air--Pollution
|
| Additional Subjects |
Infrared spectra ;
Atmospheric composition ;
Gas analysis ;
Air pollution ;
Chemical analysis ;
Trace elements ;
Stratosphere ;
Smog ;
Photolysis ;
Reaction kinetics ;
Fluorohydrocarbons ;
Nitrous acid ;
Absorption spectra ;
Fourier transform spectroscopy ;
Air pollution detection ;
Freon 12 ;
Freons
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD ARCHIVE |
EPA 600-3-77-025 |
|
Headquarters Library/Washington,DC |
05/03/2013 |
| EJBD |
EPA 600-3-77-025 |
|
Headquarters Library/Washington,DC |
02/24/2014 |
| EKBD |
EPA-600/3-77-025 |
|
Research Triangle Park Library/RTP, NC |
07/11/2003 |
| ESAD |
EPA 600-3-77-025 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-272 891 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
103 p. ; 28 cm. |
| Abstract |
Spectra of air samples at ground level of approximately 10m, 100m, and 1km, and solar spectra obtained for solar zenith distances between 40 and 87 degrees have been obtained. Examples of these spectra in the region from 1100 to 1200/cm are presented together with spectra calculated from the atmospheric line parameter listing prepared by the Air Force Geophysical Laboratories. From the absorption features of fluorocarbon-12 near 1160/cm in solar spectra, a mean tropospheric abundance of 0.34 ppb has been estimated. A photochemical cell capable of approximating the solar noon irradiance at ground level between 300 and 400nm and in which path lengths in excess of 200m can be obtained is described. This cell has been used to study the photolysis of HNO2 and a rate constant of 0.070/min has been measured. Spectra of more than 20 gases of importance to air pollution problems, obtained under controlled conditions covering the region from 700 to 1500/cm, are presented. Progress in the construction of a cell, coolable to -60 C, and capable of being irradiated at wavelengths down to 170nm, is described. |
| Notes |
Caption title. "August 1977." "EPA-600/3-77-025." |
