Open AccessCarbon isotope ratio analysis in CO2 based on Fourier transform infrared spectroscopy
Author(s) -
Xiangxian Li,
Mingliang Gao,
Liang Xu,
Tong Jingjing,
Xiuli Wei,
Min Feng,
Jin Liu,
Yaping Wang,
Jing Shi
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.030202
Subject(s) - hitran , fourier transform infrared spectroscopy , carbon dioxide , infrared , fourier transform , materials science , analytical chemistry (journal) , carbon fibers , infrared spectroscopy , spectroscopy , isotope , fourier transform spectroscopy , isotopes of carbon , absorption (acoustics) , absorption spectroscopy , chemistry , physics , mathematics , optics , environmental chemistry , mathematical analysis , quantum mechanics , composite number , composite material , organic chemistry
A new method to detect carbon isotope ratio of carbon dioxide is presented, which is developed based on Fourier transform infrared spectroscopy (FTIR)technique. The method to obtain the absorption coefficient from HITRAN is introduced in detail. The nonlinear least square algorithm to determine δ13CO2 value is studied. The total system and experimental procedure are shown in the paper. The temperature and pressure effect on δ13CO2 value determination are analyzed from both theory and experiment analysis. For the same CO2 standard gas, the δ13CO2 value is detected by both FTIR and IRMS technology, and the results are also comparatively analyzed and discussed. The difference in mean between both methods is only 0.25%. The experimental results show that the FTIR technique to detect carbon isotope ratio of carbon dioxide is viable.