A quantitative infrared spectral library of vapor phase chemicals: applications to environmental monitoring and homeland defense

Steven W. Sharpe; Timothy J. Johnson; Robert L. Sams

doi:10.1117/12.578275

14 December 2004 A quantitative infrared spectral library of vapor phase chemicals: applications to environmental monitoring and homeland defense

Steven W. Sharpe, Timothy J. Johnson, Robert L. Sams

Author Affiliations +

Proceedings Volume 5584, Chemical and Biological Standoff Detection II; (2004) https://doi.org/10.1117/12.578275
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

The utility of infrared spectroscopy for monitoring and early warning of accidental or deliberate chemical releases to the atmosphere is well documented. Regardless of the monitoring technique (open-path or extractive) or weather the spectrometer is passive or active (Fourier transform or lidar) a high quality, quantitative reference library is essential for meaningful interpretation of the data. Pacific Northwest National Laboratory through the support of the Department of Energy has been building a library of pure, vapor phase chemical species for the last 4 years. This infrared spectral library currently contains over 300 chemicals and is expected to grow to over 400 chemicals before completion. The library spectra are based on a statistical fit to many spectra at different concentrations, allowing for rigorous error analysis. The contents of the library are focused on atmospheric pollutants, naturally occurring chemicals, toxic industrial chemicals and chemicals specifically designed to do damage. Applications, limitations and technical details of the spectral library will be discussed.

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Steven W. Sharpe, Timothy J. Johnson, and Robert L. Sams "A quantitative infrared spectral library of vapor phase chemicals: applications to environmental monitoring and homeland defense", Proc. SPIE 5584, Chemical and Biological Standoff Detection II, (14 December 2004); https://doi.org/10.1117/12.578275

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