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Raman spectroscopy in the analysis of fire gases
Author(s) -
Alden M.,
Blomqvist J.,
Edner H.,
Lundberg H.
Publication year - 1983
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/fam.810070104
Subject(s) - raman spectroscopy , raman scattering , polystyrene , analytical chemistry (journal) , materials science , work (physics) , detection limit , environmental science , chemistry , optics , composite material , environmental chemistry , thermodynamics , chromatography , physics , polymer
Raman scattering is a possible technique for analysing gas mixtures. In the work here described Raman scattering was used for detection of gases extracted from different model fires, where wood, polymethylmetachrylate (PMMA) and polystyrene were used as test materials. Raman spectra of gas samples from differently ventilated model fires are presented as well as the variation of O 2 , CO 2 and CO concentrations as a function of time with an effective time constant of less than 5 s. The sensitivity of the experimental set‐up was estimated to be about 1000 ppm, but suggestions are given how to reach a detection limit of about 1 ppm. The feasibility of the technique and various ways of improving it are briefly discussed.