Method enables simultaneous concentration monitoring of atmospheric SO2, NO, and NO2. Fluorescing pollutant gases in sample are excited by visible output of dye laser and its second-harmonic ultraviolet frequencies. Three photomultipliers, each with suitable optical filters, view fluorescence. Method tests ambient air, stack emissions, and highway automotive exhausts.
Simultaneous measurement of three atmospheric pollutants
NASA Tech Briefs ; 5 , 3
1981-01-01
Miscellaneous
No indication
English
Remote measurement of atmospheric pollutants
NTRS | 1979
|Simultaneous measurement of different pollutants in Leipzig using LIDAR
British Library Online Contents | 1997
|Optical systems monitor atmospheric pollutants
British Library Online Contents | 1997
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