Monitoring Cl_2 using a differential absorption lidar system

Optical Remote Measurement of Toxic Gases

“…Chlorine has a broad spectrum, and it too has been measured using the DIAL technique. 95 The sensitivities for CS2 and HCHO are given as 1.33 ppbv and 0.51 ppbv, respectively, for a 1-km light path and an instrument absorbance sensitivity of 10~4. 94 Some other trace gases can be measured down to a 0.1 to 0.0002 ppbv concentration with the same pathlength and system sensitivity.…”

Indirect Determination of Molecular Chlorine by Fourier Transform Infrared Spectrometry

“…16 Spectroscopic techniques (e.g., ultraviolet (UV), Raman) are also capable of measuring molecular chlorine directly. An artificial chlorine cloud was investigated by Edner et al 17 by the differential absorption LIDAR (light detection and ranging) method.…”