Determination of N2O isotopomers with quantum cascade laser based absorption spectroscopy.
We present an analytical technique based on direct absorption laser spectroscopy for high precision and simultaneous determination of the mixing ratios of the most abundant nitrous oxide isotopic species: (14)N(15)N(16)O, (15)N(14)N(16)O and (14)N(2) (16)O. A precision of 0.5 ??? was achieved for the site specific isotope ratios of N(2)O at 90 ppm using an averaging time of 300 s.
ETH Zurich, Institute for Quantum Electronics, Laboratory for Laser Spectroscopy and Sensing, Schafmattstr. 16, 8093 Zurich, Switzerland.
Helen
H
Waechter
Joachim
J
Mohn
Bela
B
Tuzson
Lukas
L
Emmenegger
Markus W
MW
Sigrist
D053844:Lasers, Solid-State; D009587:Nitrogen Isotopes / Q000032:analysis* / Q000737:chemistry*; D009609:Nitrous Oxide / Q000032:analysis* / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*
D009587:Nitrogen Isotopes; D009609:Nitrous Oxide