The invention provides a system and method utilizing, among other things, fluorescence spectroscopy in the ultraviolet portion of the electromagnetic spectrum to determine chemical species and concentrations. The basic measuring system includes optics, a spectrograph, a detector, and an energy source...http://www.google.com/patents/US7154102?utm_source=gb-gplus-sharePatent US7154102 - System and methods for detection and identification of chemical substances
