Ultraviolet Raman Spectra and Cross-Sections of the G-series Nerve Agents

Ultraviolet (UV) Raman spectroscopy is being applied to the detection of chemical agent contamination of natural and man-made surfaces. In support of these efforts, we have measured the UV Raman signatures of the G-series nerve agents GA (tabun), GB (sarin), GD (soman), GF (cyclosarin), and the agen...

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Bibliographic Details
Published in:	Applied spectroscopy Vol. 62; no. 10; pp. 1078 - 1083
Main Authors:	Christesen, Steven D., Jones, Jay Pendell, Lochner, Joseph M., Hyre, Aaron M.
Format:	Journal Article
Language:	English
Published:	London, England SAGE Publications 01-10-2008
Subjects:	Algorithms Chemical Warfare Agents - analysis Cholinesterase Inhibitors - analysis Organophosphorus Compounds - analysis Reproducibility of Results Sensitivity and Specificity Spectrophotometry, Ultraviolet - methods Spectrum Analysis, Raman - methods Chemical agents Contamination detection Raman spectroscopy Nerve agents Cross-sections Ultraviolet Raman spectroscopy
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Summary:	Ultraviolet (UV) Raman spectroscopy is being applied to the detection of chemical agent contamination of natural and man-made surfaces. In support of these efforts, we have measured the UV Raman signatures of the G-series nerve agents GA (tabun), GB (sarin), GD (soman), GF (cyclosarin), and the agent simulant diisopropyl methylphosphonate (DIMP) at 248 nm and 262 nm, as well as taking their UV Raman and UV absorption cross-sections. Of these chemicals, only GA exhibits any significant pre-resonance enhancement. We also show that reduction of the excitation wavelength from 262 nm to 248 nm effectively shifts the Raman spectrum away from a substantial sample fluorescence background, implying a significant improvement in detection capability.
ISSN:	0003-7028 1943-3530
DOI:	10.1366/000370208786049024