THE USE OF FT-IR SPECTROSCOPY FOR FIRE SCIENCE APPLICATIONS: THERMO SCIENTIFIC’S ANTARIS INDUSTRIAL GAS SYSTEM (IGS)

摘要

The analytical technique Fourier Transform Infrared (FTIR) spectroscopy offers keyrnadvantages in the analysis of gases evolved in the combustion of materials in fire science research. Itsrnwide energy range and high spectral resolution supports analysis of multiple components within arnsingle measurement, including toxic acids such as hydrogen chloride (HCl), hydrogen fluoride (HF),rnand hydrogen cyanide (HCN). Gas stream are sampled continuously from the smoke stream emittedrnduring combustion experiments, providing real-time concentration profiles on a second-by-secondrnbasis. The instrumental response of an FTIR spectrometer is very stable, eliminating the requirementsrnfor daily or weekly re-calibration of the analyzer. Finally, the raw data may be stored to disk, where itrncan be analyzed post-run for unexpected components or to verify unexpected results.