Spectrophone measurements of isotopes of water vapor and nitric oxide and of phosgene at selected wavelengths in the CO and CO_2 laser region

Abstract

Absorption coefficients are measured at CO and CO₂ laser wavelengths for the poison gas phosgene, CCl₂O, and the isotopic species H₂¹⁶O, H₂¹⁸O, HD¹⁶O, D₂¹⁶O, ¹⁴N¹⁶O, and ¹⁵N¹⁶O. The laser lines selected are those in near coincidence with absorption lines of the gases and vapors studied. These data should prove useful in analytical applications relating to pollution monitoring and control of phosgene or D₂O leaks. They also demonstrate the feasibility of determining certain important isotope abundances or ratios by simple and rapid infrared spectroscopic methods.