Provider: ingentaconnect
Database: ingentaconnect
Content: application/x-research-info-systems
TY - ABST
AU - Kozlov, Denis
AU - Besov, Alexey
TI - Method of Spectral Subtraction of Gas-Phase Fourier Transform Infrared (FT-IR) Spectra by Minimizing the Spectrum Length
JO - Applied Spectroscopy
PY - 2011-08-01T00:00:00///
VL - 65
IS - 8
SP - 918
EP - 923
KW - FT-IR SPECTROSCOPY
KW - FOURIER TRANSFORM INFRARED SPECTROSCOPY
KW - LONG-PATH GAS CELL
KW - WATER VAPOR SPECTRUM SUBTRACTION
N2 - A new method of spectral subtraction for gas-phase Fourier transform infrared (FT-IR) spectra was developed for long-path gas measurements. The method is based on minimization of the length of the spectrum that results from subtracting the spectrum of an individual component of a gas
mixture (water, CO_{2}, etc.) from the experimental spectrum of the mixture. For this purpose a subtraction coefficient (*k*
_{min}) is found for which the length of the resulting spectrum is minimized. A mathematical simulation with two Lorentzian absorption bands was
conducted and the limits of application for the proposed method were determined. Two experimental examples demonstrate that a successful result could be achieved in the case when the subtrahend spectrum contains a number of narrow absorption bands (such as the spectrum of water vapor).
UR - http://www.ingentaconnect.com/content/sas/sas/2011/00000065/00000008/art00016
M3 - doi:10.1366/11-06281
UR - http://dx.doi.org/10.1366/11-06281
ER -