CO2-laser photoacoustic spectroscopy of deuterated ammonia
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Photoacoustic (PA) coincidence absorption spectra of ammonia and its deuterated forms with carbon-dioxide laser emission were obtained. In addition, a simple isotope synthesis procedure was developed for that purpose. The strongest coincidence for the NH, molecule was found with laser line 9R(30) at 1084.628 cm(-1). Laser PA spectra of samples with different deuterium content indicate that coincidences with laser lines 10R(14) and 10R(30) at 971.93 and 982.10 cm(-1) respectively, correspond to NH2D, while one with 10R(20) at 975.93 cm(-1) is attributed to NHD2. The data obtained are discussed in relation to their uses in isotope chemistry and analysis. They are in agreement with results published by other authors. (C) 1997 Elsevier Science B.V.
Извор:Infrared Physics and Technology, 1997, 38, 6, 331-336
ISSN: 1350-4495 (print)