New sampling methods for Raman handheld instruments

Keith Carron; Bryan Ray; Shane Buller; Aaron Strickland

doi:10.1117/12.2228420

12 May 2016 New sampling methods for Raman handheld instruments

Keith Carron, Bryan Ray, Shane Buller, Aaron Strickland

Proceedings Volume 9824, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVII; 98240H (2016) https://doi.org/10.1117/12.2228420
Event: SPIE Defense + Security, 2016, Baltimore, MD, United States

Abstract

The realization of global terrorism after the September 11 attacks led immediately to a need for rapid field analysis of materials. Colorimetric test kits existed, but they are very subjective to interpret and they require contact with the sample. A push for handheld spectrometers quickly led to FTIR systems with ATR sampling, handheld IMS systems, and handheld Raman spectrometers. No single technique solves all of the problems of field detection. We will discuss the development of Raman instrumentation and, in particular, cover the advantages and the problems that are inherent in Raman portability. Portable Raman instrumentation began with a limited number of accessories: a point-and-shoot and some sort of vial adaptor. Currently this has expanded to stand-off attachments for measurements at a distance, air sampling to look for toxic gasses or aerosols, Orbital Raster Scan (ORS) to spatially average over samples, SERS attachments for trace detection, and fiber optic probes.

Citation Download Citation

Keith Carron, Bryan Ray, Shane Buller, and Aaron Strickland "New sampling methods for Raman handheld instruments", Proc. SPIE 9824, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVII, 98240H (12 May 2016); https://doi.org/10.1117/12.2228420

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