Raman spectrometry portable

Selection of on-site analytical techniques involves evaluation of many factors including the specific objectives of this work. Numerous instrumental techniques, GC, GC-MS, GC-MS-TEA, HPLC, HPLC-MS-MS, IR, FTIR, Raman, GC-FTIR, NMR, IMS, HPLC-UV-IMS, TOF, IC, CE, etc., have been employed for their laboratory-based determination. Most, however, do not meet on-site analysis criteria, (i.e., are not transportable or truly field portable, are incapable of analyzing the entire suite of analytes, cannot detect multiple analytes compounded with environmental constituents, or have low selectivity and sensitivity). Therefore, there exists no single technique that can detect all the compounds and there are only a few techniques exist that can be fielded. The most favored, portable, hand-held instrumental technique is ion mobility spectrometry (IMS), but limitations in that only a small subset of compounds, the inherent difficulty with numerous false positives (e.g., diesel fumes, etc.), and the length of time it takes to clear the IMS back to background are just two of its many drawbacks. 

Microfluidics and miniaturization include the development of small and microscale devices to permit chemical measurements, with the objective of field portability or bedside use. Examples include Raman spectroscopy and mass spectrometry. The category also includes devices that employ small-scale fluidics to provide automated sample processing, chemical reactions, separation, and measurement in devices popularly called lab-on-a-chip. 

Current Status of Munitions Assessment and Processing System (MAPS), Portable Isotopic Neutron Spectroscopy (PINS), Secondary Ion Mass Spectrometry (SIMS), and Raman Spectroscopy Ed Doyle and Bill Brankowitz PMNSCM... 

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