title: Methodology for detection of carbon monoxide in hot, humid media by telecommunication distributed feedback laser-based tunable diode laser absorption spectrometry.
abstract: Detection of carbon monoxide (CO) in combustion gases by tunable diode laser spectrometry is often hampered by spectral interferences from H2O and CO2. A methodology for assessment of CO in hot, humid media using telecommunication distributed feedback lasers is presented. By addressing the R14 line at 6395.4  cm(-1), and by using a dual-species-fitting technique that incorporates the fitting of both a previously measured water background reference spectrum and a 2f-wavelength modulation lineshape function, percent-level concentrations of CO can be detected in media with tens of percent of water (c(H2O)≤40%) at T≤1000 °C with an accuracy of a few percent by the use of a single reference water spectrum for background correction.
authors.affiliation: Department of Physics, Umeå University, SE-901 87 Umeå, Sweden.
authors.forename: Lemthong
authors.initials: L
authors.lastname: Lathdavong
authors.forename: Jie
authors.initials: J
authors.lastname: Shao
authors.forename: Pawel
authors.initials: P
authors.lastname: Kluczynski
authors.forename: Stefan
authors.initials: S
authors.lastname: Lundqvist
authors.forename: Ove
authors.initials: O
authors.lastname: Axner