With continuing improvements in both standoff- and point-sensing techniques, there is an ongoing need for high-quality infrared spectral databases. The Northwest Infrared Database (NWIR) contains quantitative, gas-phase infrared spectra of nearly 500 pure chemical species that can be used for a variety of applications such as atmospheric monitoring, biomass burning studies, etc. The data, recorded at 0.1 cm-1 resolution, are pressure broadened to one atmosphere (N2) in order to mimic atmospheric conditions. Each spectrum is a composite composed of multiple individual measurements. Recent updates to the database include over 60 molecules that are known or suspected biomass-burning effluents. Examples from this set of measurements will be presented and experimental details will be discussed in the context of the utility of NWIR for environmental applications.
Revised: September 29, 2014 |
Published: May 22, 2014
Citation
Brauer C.S., T.J. Johnson, T.A. Blake, S.W. Sharpe, R.L. Sams, and R.G. Tonkyn. 2014.The Northwest Infrared (NWIR) gas-phase spectral database of industrial and environmental chemicals: Recent updates. In Advanced Environmental, Chemical, and Biological Sensing Technologies XI, May 5, 2014, Baltimore, Maryland. Proceedings of the SPIE, edited by T Vo-Dinh, RA Lieberman and GG Gauglitz, 9106, Paper No. 910604. Bellingham, Washington:SPIE.PNNL-SA-102648.doi:10.1117/12.2053591