Air Quality Monitoring by Open Path Fourier Transform Infrared (FTIR) Spectrometry 972391

The feasibility of using open path Fourier transform infrared (OP-FTIR) spectrometry as an ambient air sensor on spacecraft was examined. OP-FTIR is a valuable monitoring technique because the sensor requires no sample preparation or separations and compositional information obtained is along a path rather than at a sampling point. OP-FTIR monitors and quantitates in real-time, offers high sensitivity, and detection is compound-specific. The data analysis, data reduction, and hardware requirements were investigated and potential applicability of chemometric methods and state-of-the-art commercial hardware systems were discussed.


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