The use of passive Fourier Transformation Infrared Spectrometry (FT/IR) is a way for the fast recognition and identification of airborne pollutants. In studies done by the Department of Safety Engineering/Environmental Protection at the University of Wuppertal a passive FT/IR was used to show the possibilities of such a system. The fast identification of accidentally released substances is a very important hint in finding leaks and stopping the release. This gives not only the chance of a recognition of leaks; it although shortens the time to find the point of release and sealing the leak. At least the released mass of a substance is reduced. The study shows, that a passive FT/IR is an easy to deploy system for the fast detection, identification and visualization of airborne pollutants. It can be used for the continuous monitoring of plants, dumpsites, production lines or other points of interest.