Abstract
Fiber Optic Coupled Reflection/Absorption Infrared Spectroscopy (RAIRS) has been investigated as a potential technique for developing methodologies of detection and quantification of explosive residues on metallic surfaces. TNT, DNT, HMX, PETN, and Tetryl were detected at loading concentrations less than 400 ng/cm2. Data were analyzed using Chemometrics statistical analysis routines. In particular, partial least squares multivariate analysis (PLS) was used for quantification studies. Peak areas were also used for data analysis to compare with linear multivariate analysis. The measurements resulted in intense absorption bands in the fingerprint region of the infrared spectrum that were used to quantify the target threat chemicals and to calculate the limit of detection for each compound. Micro-RAIRS vibrational imaging was also used for characterization of the distribution and form of layers of explosives deposited on stainless steel sheets. The degree of homogeneity depended strongly on the method of deposition. The images were generated by calculating the area under vibrational signals of 15 μm × 15 μm grids with a separation of 15 μm. Histograms of the maps were generated and the homogeneity was evaluated by using standard deviations, mean kurtosis, skewness, and moments of distributions obtained. Methanol solutions of High Explosives (HE) resulted in the optimum distributions on the stainless steel surfaces tested and therefore, Methanol selected as the preferred solvent for the Fiber Optics Coupled-RAIRS experiments.
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References
Smith, B. (2000). Fundamentals of Fourier Transform Infrared Spectroscopy. Boca Raton, FL: CRC Press.
Umemura, J. (2002). Reflection–Absorption Spectroscopy of Thin Films on Metallic Substrates. In J. M. Chalmers & P. R. Griffiths (Eds.), Handbook of Vibrational Spectroscopy (pp. 982–998). New York, NY: John Wiley and Sons.
Kattner, J., & Hoffmann, H. (2002). External Reflection Spectroscopy of Thin Films on Dielectric Substrates. In J. M. Chalmers & P. R. Griffiths (Eds.), Handbook of Vibrational Spectroscopy (pp. 1009–1027). New York, NY: John Wiley and Sons.
Griffiths, P. R., & De Haseth, J. A. (1986). Fourier-Transform Infrared Spectrometry. New York, NY: John Wiley.
Melling, P. J., & Shelley, P. (2001). Spectroscopic accessory for examining films and coatings on solid surfaces. U.S. Patent 6,3,10,348, U.S. Patent and Trademark Office, Washington, DC.
Mehta, N. K., Goenaga-Polo, J. E., Hernandez-Rivera, S. P., Hernandez, D., Thomson, M. A., & Melling, P. J. Development of an in situ spectroscopic method for cleaning validation using mid-IR fiber optics. Bio Pharm, 15, 5 (2002); idem, Spectroscopy, 18(4), 14–19 (2003, April).
Urbanski, T. (1964). Chemistry and Technology of Explosives. New York: Macmillan Co.
Primera-Pedrozo, O. M., Pacheco-Londoño, L. C., De la Torre-Quintana, L. F., Hernández-Rivera, S. P., Chamberlain, R. T, & Lareau, R. T (2004). Use of fiber optic coupled FT-IR in detection of explosives on surfaces. Proceedings of the Society for Photo-Instrumentation Engineers, 5403, 237–245. doi:10.1117/12.542812.
Hamilton, M. L., Perston, B. B., Harland, P. W., Williamson, B. E., Melling, P. J., & Thomson, M. A. (2005). Grazing-angle fiber-optic IRRAS for in situ cleaning validation. Organic Process Research & Development, 9, 337–343. doi:10.1021/op040213z.
Lin-Vien, D. N. B., Colthup, Fateley, W. G., & Grasselli, J. G. (1991). The Handbook of Infrared and Raman Characteristic Frequencies of Organic Molecules (pp. 179–189). San Diego, CA: Academic Press.
Beebe, K., Pell, R., & Beth, M. (1998). Chemometrics: A Practical Guide. New York: John Wiley & Sons.
Payling, R. (2008). Detection Limit. Retrieved January 15, 2008, from http://www.thespectroscopynet.com/Educational/detection_limit.htm.
Thomsen, V., Schatzlein, D., & Mercuro, D. (2003). Limits of detection in spectroscopy. Spectroscopy, 18, 114.
Skoog, D. A., West, D. M., James Holler, F., & Crouch, S. R. (2004). Fundamentals of Analytical Chemistry. Belmont, CA: Thomson Brooks Cole.
Salleras, L., Donguez, A., Mata, E., Taberrer, J. L., Moro, I., & Salva, P. (1995). Epidemiologic study of an outbreak of clenbuterol poisoning in Catalonia, Spain. Public Health Reports, 110, 338–342.
Brambilla, G., Loizzo, A., Fontana, L., Strozzi, M., Guarino, A., & Soprano, V. (1997). Food poisoning following consumption of clenbuterol-treated veal in Italy. Journal of the American Medical Association, 278, 635. doi:10.1001/jama.278.8.635b.
Acknowledgments
This work was supported by the U.S. Department of Defense, University Research Initiative Multidisciplinary University Research Initiative (URI)-MURI Program, under grant number DAAD19-02-1-0257. The authors also acknowledge contributions from Scott Grossman and Aaron LaPointe of Night Vision and Electronic Sensors Directorate, Department of Defense.
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Primera-Pedrozo, O.M., Soto-Feliciano, Y.M., Pacheco-Londoño, L.C. et al. Detection of High Explosives Using Reflection Absorption Infrared Spectroscopy with Fiber Coupled Grazing Angle Probe/FTIR. Sens Imaging 10, 1–13 (2009). https://doi.org/10.1007/s11220-009-0042-1
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DOI: https://doi.org/10.1007/s11220-009-0042-1