||Application of Fourier transform spectroscopy to air pollution problems : interim report - 1977 /
Chang, Yoon S. ;
Shaw, H. H. ;
Niple, E. ;
Calvert, J. G. ;
Uselman., W. M.
||Ohio State Univ., Research Foundation, Columbus.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
|| U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory,
Fourier transform spectroscopy. ;
Fourier transform spectroscopy.
Infrared spectra ;
Gas analysis ;
Atmospheric composition ;
Reaction kinetics ;
Carbon monoxide ;
Nitrogen oxide(N2O) ;
Carbon dioxide ;
Chemical analysis ;
Air pollution ;
Absorption spectra ;
Numerical analysis ;
Test chambers ;
Fourier transform spectroscopy ;
Air pollution detection ;
Freon 12 ;
||Region 3 Library/Philadelphia, PA
||OCSPP Chemical Library/Washington,DC
||Research Triangle Park Library/RTP, NC
||Region 10 Library/Seattle,WA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||108 p. ; 28 cm.
An atlas of observed and calculated air spectra from 700 to 2300/cm has been prepared. Methods of analyzing air spectra to identify spectral features and to determine simultaneously the abundances of atmospheric gases such as CO, N2O, CH4, O3, H2O, and CO2 have been explored. These methods include ratioing observed and calculated spectra and correlation analysis of absorption bands to obtain abundances by linear regression and nonlinear least squares methods. Absorbing features of atmospheric gases such as O3, H2O, and N2O have been removed from solar spectra to isolate underlying features of F-12 near 1160/cm. Simulations of the reactions in a typical NOX-RH-RCHO-polluted atmosphere exposed to sunlight show that the theoretical rate of HO2NO2 generation is similar in magnitude to those expected (and observed in real atmospheres) for peroxyacylnitrates.
Caption title. "June 1978." "EPA-600/3-78-057."