Social and Behavioral Sciences Commons^™

Positionally Dependent 15n Fractionation Factors In The Uv Photolysis Of N2o Determined By High Resolution Ftir Spectroscopy, Fred Turatti, D W. T Griffith, Stephen Wilson, Michael Esler, T Rahn, H Zang, G A. Blake

Faculty of Science, Medicine and Health - Papers: part A

Positionally dependent fractionation factors for the photolysis of isotopomers of N₂O in natural abundance have been determined by high resolution FTIR spectroscopy at three photolysis wavelengths. Fractionation factors show clear ¹⁵N position and photolysis wavelength dependence and are in qualitative agreement with theoretical models but are twice as large. The fractionation factors increase with photolysis wavelength from 193 to 211 nm, with the fractionation factors at 207.6 nm for ¹⁴N¹⁵N¹⁶O, ¹⁵N¹⁴N¹⁶O and ¹⁴N¹⁴N¹⁸O equal to −66.5±5‰,−27.1±6‰ and −49±10‰, respectively.