||Remote Measurement of Sulfur Dioxide Emissions Using an Ultraviolet Light Sensitive Video System.
McElhoe, H. B. ;
Conner, W. D. ;
||Northrop Services, Inc., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
||EPA-68-02-2566 ;EPA-68-02-4033; EPA600/J-86/323;
Sulfur dioxide ;
Air pollution ;
Particle size ;
Electromagnetic absorption ;
Light(Visible radiation) ;
Air pollution sampling
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Remote measurements of sulfur dioxide emissions were made using a portable ultraviolet (UV) light sensitive video system. The instrument system measures the UV light attenuation caused by sulfur dioxide in the effluent plume and relates this absorption to the sulfur dioxide concentration. Laboratory and field tests were conducted to establish the potential for using the technique for rapid surveillance of sulfur dioxide emissions. The laboratory studies included testing by viewing cells containing known concentrations of sulfur dioxide and measuring the emissions from a modified smoke generator. The field study was performed in two stages. Sulfur dioxide emissions were measured at a typical coal-fired power plant (concentrations ranged from 80 to 365 ppm). The elevated concentrations were obtained by reducing flue gas scrubber efficiencies. The second stage involved participation in an urban particulate modeling study which involved routine sulfur dioxide emissions measurements at 12 industrial sites. (Copyright (c) 1986 Air Pollution Control Association.)