Chemical agent detection by surface-enhanced Raman spectroscopy

Stuart Farquharson; Alan Gift; Paul Maksymiuk; Frank E. Inscore; Wayne W. Smith; Kevin Morrisey; Steven D. Christesen

doi:10.1117/12.511940

8 March 2004 Chemical agent detection by surface-enhanced Raman spectroscopy

Stuart Farquharson, Alan Gift, Paul Maksymiuk, Frank E. Inscore, Wayne W. Smith, Kevin Morrisey, Steven D. Christesen

Proceedings Volume 5269, Chemical and Biological Point Sensors for Homeland Defense; (2004) https://doi.org/10.1117/12.511940
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

Abstract

In the past decade, the Unites States and its allies have been challenged by a different kind of warfare, exemplified by the terrorist attacks of September 11, 2001. Although suicide bombings are the most often used form of terror, military personnel must consider a wide range of attack scenarios. Among these is the intentional poisoning of water supplies to obstruct military operations in Afghanistan and Iraq. To counter such attacks, the military is developing portable analyzers that can identify and quantify potential chemical agents in water supplies at microgram per liter concentrations within 10 minutes. To aid this effort we have been investigating the value of a surface-enhanced Raman spectroscopy based portable analyzer. In particular we have been developing silver-doped sol-gels to generate SER spectra of chemical agents and their hydrolysis products. Here we present SER spectra of several chemical agents measured in a generic tap water. Repeat measurements were performed to establish statistical error associated with SERS obtained using the sol-gel coated vials.

Citation Download Citation

Stuart Farquharson, Alan Gift, Paul Maksymiuk, Frank E. Inscore, Wayne W. Smith, Kevin Morrisey, and Steven D. Christesen "Chemical agent detection by surface-enhanced Raman spectroscopy", Proc. SPIE 5269, Chemical and Biological Point Sensors for Homeland Defense, (8 March 2004); https://doi.org/10.1117/12.511940

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