||Feasibility study of the use of resonance scattering for the remote detection of SO2 /
Fowler, Michael C. ;
Berger., Paul J.
||United Aircraft Research Labs., East Hartford, Conn.;National Environmental Research Center, Research Triangle Park, N.C.
|| U.S. Environmental Protection Agency, National Environmental Research Center,
||PB-257 838; EPA-650/2-74-020; UARL-N921480-18; EPA-68-02-0656
Nuclear magnetic resonance spectroscopy. ;
Sulfur compounds--Spectra. ;
Sulfur dioxide ;
Gas analysis ;
Remote sensing ;
Air pollution ;
Light scattering ;
Ultraviolet radiation ;
Raman spectroscopy ;
Electron transitions ;
Dye lasers ;
Air pollution detection ;
Laser spectroscopy ;
Laser induced fluorescence
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||51 p. : ill. ; 28 cm.
An analytical and experimental investigation has been carried out to determine the feasibility of using the scattering of ultraviolet radiation by SO2 as a probe of the concentration of that molecule in stationary source emissions. Both ordinary fluorescence and resonant Raman scattering were considered and experimentally it was found that the latter component was present in the scattered radiation with sufficient magnitude to reduce significantly the degrading effect that ordinary fluorescent quenching has on this scattering technique. Further analysis revealed that current state-of-the-art dye lasers deliver sufficient ultraviolet pulse energy to permit SO2 concentration determination in practical situations but that fluorescent scattering from particulates presents a possible constraint to the validity of this technique. A field program is recommended to investigate the latter.
Contract No. 68-02-0656. "January 1974." Includes bibliographical references.