Fourier Transform Infrared Absorption Spectroscopy for Quantitative Analysis of Gas Mixtures for Homeland Security Applications

摘要: Chemical detectors are crucial tools for first responders during emergency-response scenarios and continuous monitoring of public spaces general safety. For those who depend upon chemical safety security, ensuring that alarm at specified levels is critical. During detector performance evaluation, the accurate delivery known concentrations target to a key aspect test. Referee methods enable analyte test concentration associated uncertainties in be validated by independent analysis, which especially important reactive analytes. This work demonstrates method use Fourier transform infrared (FT-IR) absorption spectroscopy quantitatively evaluating composition vapor streams containing hazardous materials acute exposure guideline (AEGL) under conditions defined recently published standard specifications detectors. The described covers primary reference spectra establish concentrations, generation secondary suitable measuring testing environments, referee feedback compensate depletion analyte. Important benefits this approach included verification with characterized situ measurements co-located test, near-real-time feedback, broad applicability toxic industrial chemicals.