طیف‌سنجی و آشکارسازی مواد منفجره و آلی از راه دور از طریق تولید پلاسمای جریان مستقیم

نوع مقاله : مقاله پژوهشی کامل

نویسندگان

1 گروه فیزیک، دانشکدۀ علوم، دانشگاه شهید چمران اهواز، اهواز، ایران

2 مرکز تحقیقات لیزر و پلاسما، دانشگاه شهید چمران اهواز، اهواز، ایران

3 گروه شیمی، دانشکدۀ علوم، دانشگاه شهید چمران اهواز، اهواز، ایران

چکیده

روش "طیف‌سنجیِ از راه دور پلاسمای مواد" می‌تواند برای آشکارسازی و تشخیص مواد زیانبار به‌ویژه مواد منفجره، از فواصل دور مورد استفاده قرار گیرد. پلاسمای مواد را می‌توان از طریق تابش پرتو لیزر با چگالی توان به اندازۀ کافی بالا یا از طریق اعمال ولتاژ بالا ایجاد کرد. در این مقاله، برای تولید پلاسمای مواد، از ولتاژ مستقیم و در حدود kV 2 درون لامپ‌های Tـ شکل در اتمسفر آرگون استفاده شده است. دو مادۀ منفجرۀ، 2 و 4 و 6- تری نیترو تولوئن و پیکریک‌اسید و دو مادۀ آلی، 3 و 5 ـ دی‌نیتروبنزوئیک اسید و 4 ـ نیتروبنزوئیک اسید با مقادیر mg 35، پس از تولید پلاسما، از فواصل مختلف 55/1، 2 و 31/2 متری از طریق طیف‌سنجی، آشکارسازی شدند. طیف پلاسمای این مواد در ناحیۀ 200 تا 800 نانومتر شامل انواع خطوط گسیل C2، H، O، N و Ar است. حد آشکارسازی این مواد، در فاصلۀ 2 متری تعیین شد. در نهایت، با استفاده از دو روش، مواد آلی از مواد منفجره تفکیک شدند و نمودار کالیبراسیون آن‌ها تهیه شد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Remote Spectrometry and detection of organic and explosive materials through the generation of DC plasma

نویسندگان [English]

  • Elham Pouyanimehr 1
  • Mohammad Sabaian 1 2
  • Roya Azadi 3
  • Fatima Matroodi 1 2
1 Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2 Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran|Center for Research on Laser and Plasma, Shahid Chamran University of Ahvaz, Ahvaz, Iran
3 Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
چکیده [English]

Remote spectroscopy of material plasmas can be used well to detect and identify the material identity especially the explosive and organic materials. The plasma can be generated either through the applying high power density laser radiations or high DC voltages in the vacuum circumstance. In this paper, to generate the material plasmas, a high DC voltage of 2 kV was applied in the T-shaped lamp with argon atmosphere. The plasmas of two explosive materials of TNT and picric acid and two organic materials of 4-nitrobenzoic acid and 3,5-dinitrobenzoic acid in quantities of 35 mg were at first generated and then their spectra were measured from distances of 1.55, 2, and 2.31 meters. The spectra of material plasmas ranged from 200 nm to 800 nm consisting of lines C2, H, O, N, and Ar. The limit-of-detection from a distance of 2 m was determined consequently. Finally, with the use of two methods, the explosive materials were distinguished from the organic ones and the calibration curve was also prepared.

کلیدواژه‌ها [English]

  • Stand-off spectroscopy
  • explosive materials
  • DC plasma

[1] J.R. Lakowicz, principles of fluorescence spectroscopy, Plenum Press (1983) 111-150.

[2] S. Casamento, B. Kwok, C. Roux, M. Dawson, P. Doble, Optimization of the separation of organic explosives by capillary electrophoresis with artificial neural networks, Journal of Forensic Sciences 48 5 (2003) 1075-1083.

[3] F. Gholamian, M. Chaloosi, W.S. Husain, Separation of conformers of nitramines by high performance liquid chromatography (HPLC), Propellants, Explosives, Pyrotechnics 27 1 (2002) 31-33.‏

[4] X.Lu, H. Qi, X. Zhang, Z. Xue, J. Jin, X. Zhou, X. Liu, Highly dispersive Ag nanoparticles on functionalized graphene for an excellent electrochemical sensor of nitroaromatic compounds, Chemical Communications 47 46 (2011) 12494-12496. DOI: 10.1039/c1cc15697g

[5] C.L. Rhykerd, D.W. Hannum, D.W. Murray, J.E. Parmeter, Guide for the Selection of Commercial Explosives Detection Systems for Law Enforcement Applications Series: Law Enforcement and Corrections Standards and Testing Program, National Contest Journal 20531 (1999).

[6] J.L. Gottfried, F.C. De Lucia Jr, Laser-induced breakdown spectroscopy: Capabilities and Applications, Army research lab aberdeen proving ground md weapons and materials research directorate (2010) (No. ARL-TR-5238).

[7] J.I. Steinfeld, J. Wormhoudt, Explosives detection: a challenge for physical chemistry, Annual Review of Physical Chemistry 49 1 (1998) 203-232. DOI: 10.1146/annurev.physchem.49.1.203

[8] J.L. Anderson, A.A. Cantu, A.W. Chow, P.S. Fussell, R.G. Nuzzo, J.E. Parmeter, W. Trogler, Existing and potential standoff Explosives Detection Techniques, National Research Council of the National Academies, The National Academies Press, Washington, (2004).

[9] M.E. Walsh, determination of nitroaromatic, nitroamine and nitrate ester explosive in soil by gas chromatography and electron capture detector, Talanta 54 (2001) 427-483. DOI: 10.1016/s0039-9140(00)00541-5

[10] J.C. Carter, S.M. Angel, M. Lawrence-Snyder, J. Scaffidi, R.E. Whipple, J.G. Reynolds, Standoff detection of high explosive materials at 50meters in ambient light conditions using a small Raman instrument, Applied Spectroscopy 59 6 (2005) 769-775 DOI:10.1366/0003702054280612.

[11] R.G. Ewing, D.A. Atkinson, G.A. Eiceman, G.J. Ewing, A critical review of ion mobility spectrometry for the detection of explosive related compounds, Talanta 54 (2001) 515-529. DOI: 10.1016/s0039-9140(00)00565-8

[12] C.L. Rhykerd, D.W. Hannum, D.W. Murray, J.E. Parmeter, Guide for the selection of commercial explosive systems for low enforcement application, National Institute of Justice (1999).

[13] J. Cabalo, R. Sausa, Detection of hexahydro-1, 3, 5-trinitro-1, 3, 5-triazine (RDX) by laser surface photofragmentation-fragment detection spectroscopy, Applied spectroscopy 57 9 (2003)1196-1199. https://doi.org/10.1366/00037020360696099

[14] O.M. Primera-Pedrozo, N. Rodríguez, L. Pacheco-Londoño, S.P. Hernández-Rivera, Detection of 2, 4, 6-trinitrotoluene on non-traditional surfaces using fiber optic coupled grazing angle probe: FTIR, In Defense and Security Symposium International Society for Optics and Photonic‏ (2007) 65423J-65423J. DOI: 10.1117/12.720405

[15] D.A. Cremers, A.K. Knight, Handbook of Laser Induced Breakdown Spectroscopy, Chichester, Wiley (2006).

[16] J.P. Singh, S.N. Thakur, Laser-induced breakdown spectroscopy, Elsevier (2007).

[17] J.L. Gottfried, F.C. De Lucia, C.A. Munson, A.W. Miziolek, Laser-induced breakdown spectroscopy for detectionof explosives residues: a review of recent advances, challenges and future prospects, Analytical and Bioanalytical Chemistry 395 2 (2009) 283-300.

[18] J. Yinon, Forensic and Environmental Detection of Explosives, John Wiley and Sons (1999).

[19] J. Sneddon, Y.I. Lee, Novel and recent applications of elemental determination by laser-induced breakdown spectrometry, 32 (1999) 2143-2162.

[20] D.A. Cremers, L.J. Radziemski, History and fundamentals of LIBS, A.W. Miziolek, V. Palleschi, I. Schechter, Cambridge University Press ( 2006).

[21] S.J. Mousavi, M.H. Farsani, S.M.R Darbani, N. Asadorian, M. Soltanolkotabi, A.E. Majd, Identification of atomic lines and molecular bands of benzene and carbon disulfide liquids by using LIBS, Applied Optics 54 7 (2015)1713-1720.

[22] M. Dong, J. Lu, S. Yao, Z. Zhong, J. Li, J. Li, W. Lu, Experimental study on the characteristics of molecular emission spectroscopy for the analysis of solid materials containing C and N, Optics express 19 18 (2011) 17021-17029.

[23] A.H. Farhadian, M.K. Tehrani, M.H. Keshavarz, S.M. Darbany, M. Karimi, A.H. Rezayi, Application oflaser induced breakdown spectroscopyas nondesductrive and safe analysis method for composite solid propellants, Chemistry: Bulgarian Journal of Science Education 24 5 (2015).

[24] C.A. Munson, F.C De Lucia, T. Piehler, K.L. McNesby, A.W. Miziolek, Investigation of statistics strategies for improving the discriminating power of laser-induced breakdown spectroscopy for chemical and biological warfare agent simulants, Spectrochimica Acta Part B: Atomic Spectroscopy 60 7 (2005) 1217-1224.

[25] C. Lopez-Moreno, S. Palanco, J.J. Laserna, F. DeLucia Jr, A. W.Miziolek, J.Rose, A.I. Whitehouse, Test of a stand-off laser-induced breakdown spectroscopy sensor for thedetection of explosive residues on solid surfaces, Journal of Analytical Atomic Spectrometry 21 1 (2006) 55-60.