Download or read book The Analysis of Explosives by Tandem Mass Spectrometry written by SA. McLuckey and published by . This book was released on 1985 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data obtained via tandem mass spectrometry are reported for ions derived from several explosives and related compounds. Electron impact ionization, isobutane chemical ionization, and negative chemical ionization methods were used to form ions from each of the compounds studied. These compounds include o-, m-, and p-nitrotoluene; m-dinitrobenzene; 2,4-dinitrotoluene; 2,4,6-trinitrotoluene; 2,4-dinitrophenol; picric acid; 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX); 1,3,5,7-tetranitro-1,3,5,7-tetra-azacyclooctane (HMX); nitroglycerin; pentaerythritol tetranitrate (PETN); and ethylene glycol dinitrate (EGDN) For a given ionization method each class of compounds (that is, nitrobenzenes, heterocyclic nitramines, and nitrate esters) shows common decompositions. This promises to facilitate rapid screening for particular types of explosives by the neutral loss scanning procedure. Of the three ionization methods employed, electron impact ionization is least suitable for analysis of explosives by tandem mass spectrometry. Positive and negative chemical ionization methods, in contrast, tend to generate the types of ions most useful for analysis by tandem mass spectrometry.

Download or read book The Analysis of Explosives written by Jehuda Yinon and published by Elsevier. This book was released on 2013-10-22 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Analysis of Explosives surveys the principles of the various analytical methods, describes how these methods are used for the analysis of explosives, and reviews the major analytical work carried out in this field. Organized into 15 chapters, this book begins with the classification of explosives. Subsequent chapters discuss the different methods for the analysis of explosives. The detection and identification of explosive residues and hidden explosives are also explained. This monograph will be useful as a reference book for chemists in analytical and forensic laboratories, as well as a textbook for graduate students in analytical chemistry and forensic sciences.

Download or read book Modern Methods and Applications in Analysis of Explosives written by Jehuda Yinon and published by John Wiley & Sons. This book was released on 1996-08-06 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date handbook, with the latest advances including all the various methods and techniques for analyzing explosives. Explosive compounds and mixtures, residues--their recovery and clean-up procedures--chromatography, polarography, spectroscopy, environmental analysis and mass spectroscopy are among the topics covered.

Download or read book Development of a Liquid Chromatography tandem Mass Spectrometry LC MS MS Method for the Analysis of Peroxide Explosive Residues on Building Materls written by Monica Lee Vermillion and published by . This book was released on 2011 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aspects of Explosives Detection written by Maurice Marshall and published by Elsevier. This book was released on 2011-07-28 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detection and quantification of trace chemicals is a major thrust of analytical chemistry. In recent years much effort has been spent developing detection systems for priority pollutants. Less mature are the detections of substances of interest to law enforcement and security personnel:in particular explosives. This volume will discuss the detection of these, not only setting out the theoretical fundamentals, but also emphasizing the remarkable developments in the last decade. Terrorist events—airplanes blown out of the sky (PanAm 103 over Lockerbie) and attacks on U.S. and European cities (Trade Center in New York and the Murrah Federal Building in Oklahoma City, railways in London and Madrid)--emphasize the danger of concealed explosives. However, since most explosives release little vapor, it was not possible to detect them by technology used on most organic substances. After PanAm 103 was downed over Scotland, the U.S. Congress requested automatic explosive detection equipment be placed in airports. This volume outlines the history of explosive detection research, the developments along the way, present day technologies, and what we think the future holds. Written by experts in the field who set out both the scientific issues and the practical context with authority Discusses and describes the threat Describes the theoretical background and practical applications of both trace and bulk explosives detection

Download or read book Advances in Analysis and Detection of Explosives written by Jehuda Yinon and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents a collection of papers presented at the 4th International Symposium on Analysis and Detection of Explosives held at the Mitzpeh Rachel Kibbutz Guesthouse in Jerusalem, September 7 to 10, 1992. The Symposium was attended by 150 participants from 20 countries and 50 lectures were given including 4 invited keynote lectures. The purpose of the Symposium, as the previous Symposia, was to present and to discuss new approaches, new applications, new methods and techniques in analysis and detection of explosives. The Symposium was, according to the feedback received from many participants, very successful and met the anticipated expectations. New collaborative initiatives between various laboratories from different countries were formed, which is a necessity in our common goals of law enforcement, aviation security and environmental quality, issues which are closely related to the analysis of explosives. I would like to extend my thanks to the Weizmann Institute of Science and the Israel National Police for sponsoring the Symposium, to the contributing Institutions and Agencies for making this Symposium financially possible, and to the members of the International Committee for helpful advice. I am most thankful to my colleagues from the Organizing Committee, especially Dr. Joseph Almog and Dr. Shmuel Zitrin from the Israel National Police, for helping in the organization of this Symposium.

Download or read book Development of a Liquid Chromatography tandem Mass Spectrometry LC MS MS Method for the Analysis of Peroxide Explosive Residues on Building Materials written by Monica L. Vermillion and published by . This book was released on 2011 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forensic and Environmental Detection of Explosives written by Jehuda Yinon and published by John Wiley & Sons. This book was released on 1999-09-09 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Das erste Buch, das forensische und umweltspezifische Aspekte von Explosivstoffen miteinander verbindet! Dieser Leitfaden für Polizei, Umwelt- und gerichtsmedizinische Labors und fortgeschrittene Studenten der einschlägigen Fachrichtungen beschäftigt sich mit dem Nachweis von Explosivstoffen in Luftfrachtgütern, Gepäck, Fahrzeugen, verdächtigen Personen sowie in Boden- und Wasserproben. (08/99)

Download or read book Trace Analysis of Peroxide Explosives by High Performance Liquid Chromatography Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry HPLC APCI MS MS for Forensic Applications written by X. Xu and published by . This book was released on 2004 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: An HPLC-APCI-MS(/MS) method for the (trace) analysis of the most commonly encountered peroxide explosives, hexamethylenetriperoxidediamine (HMTD) and triacetonetriperoxide (TATP), has been developed. With this method, HMTD and TATP have been analyzed in the same run. (Pseudo-)molecular ions of these peroxides have been obtained as base peak under the same condition. A series of product ions was produced from these pseudo-molecular ions ([HMTD-1]+ and [TATP + NH4]+) in the MS/MS analysis. We also pioneeredin showing that TATP molecular ion [TATP-H]+ can be observed with HPLC-MS/MS. The limit of detection for HMTD and TATP was 0.26 and 3.3 ng, respectively, on column by HPLC-MS in the Full Scan mode and 0.08 and 0.8, respectively, by HPLC-APCI-MS/MS in Selected Reaction Monitoring (single ass unit) mode. The method presented has been applied successfully for the identification of peroxides in the bulk solid state (powder sample), as well as in post-blast extracts originating from a forensic case. For the post-blast extracts, the use of tandem MS has been shown clearly to be of crucial importance for the identification and detection of the peroxide explosives.

Download or read book The Analysis of Explosives written by Jehuda Yinon and published by Pergamon. This book was released on 1981-01-01 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forensic Applications of Mass Spectrometry written by Jehuda Yinon and published by CRC Press. This book was released on 2020-11-25 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forensic Applications of Mass Spectrometry combines the most current developments in applications of mass spectrometry techniques to forensic analyses. The techniques discussed include: capillary-GC/MS thermospray-LC/MS tandem mass spectrometry (MS/MS) pyrolysis-GC/MS isotope ratio mass spectrometry The applications include: analysis of body fluids and hair for drugs of abuse drug testing in sports analysis of accelerants in fire debris detection of hidden explosives in luggage and mail identification of explosives in post-explosion debris examination of evidential materials (paints, fibers, synthetic polymers) authentication of regulated products (flavoring substances, fruit juices) protection of industrial products by isotopic signature

Download or read book Advances in Forensic Applications of Mass Spectrometry written by Jehuda Yinon and published by CRC Press. This book was released on 2003-12-29 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in analytical instrumentation have had an enormous influence on forensic analysis. The mass spectrometer is now an integral part of every forensic laboratory, resulting in greater analytical accuracy, more reliable identification, and lower detection limits. As the instrumental method of choice among forensic analysts, the mass

Download or read book Analysis of Explosives by Liquid Chromatography Thermospray Mass Spectrometry written by DW. Berberich and published by . This book was released on 1988 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have investigated the application of liquid chromatography/thermospray/mass spectrometry (LC/TSP/MS) to the separation and identification of commercial and military explosives. The LC was performed using a reverse phase column with an isocratic mobile phase and a flow rate of 1.5 mL/min. These conditions resulted in retention times of less than 3 min for common explosives, permitting rapid analysis. The TSP was operated in the filamenton ionization mode which yielded unique spectra for the following explosive compounds: 1,3,5-trinitrotriazacyclohexane (RDX), 1,3,5,7-tetranitro-1,3,4,7-tetraazacyclooctane (HMX), trinitrotoluene (TNT), dinitrotoluene (DNT), pentaerythritoltetranitrate (PETN), nitroglycerin (NG), diphenylamine (DPA), and monomethylaminenitrate (MMAN) The majority of explosives yielded only negative ion thermospray mass spectra, which exhibited a strong [M + CH3COO]−; however, components of double-based smokeless powders also yielded positive ion spectra. An important forensic science application of this work is the identification of commercial and military explosives. Spectra which were obtained from the residues of improvised explosive devices of military C4 and a double-based smokeless powder allowed identification of the pure explosive compounds, LC/TSP(filament-on)/MS provided limits of detection less than 2.5 picograms for PETN.

Download or read book Development of Methods for Analysis of Explosives by Mass spectrometry and Electron Capture Detector written by Stephanie Lynn Arsenault and published by . This book was released on 2005 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Opportunities to Improve Airport Passenger Screening with Mass Spectrometry written by Committee on Assessment of Security Technologies for Transportation and published by National Academies Press. This book was released on 2004-05-26 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protection of the traveling public from terrorist threats involving explosives is a major goal of the Transportation Security Administration (TSA). For 20 years, the TSA (and the Federal Aviation Administration before it) have been investing in technologies to meet that goal. To support that activity, the TSA has asked the NRC to assess a variety of technological opportunities for offering such protection. The NRC is approaching this assignment by issuing a series of reports on chosen technology applications. This is the first of that series and presents an assessment of mass spectrometry for enhanced trace detection (ETD) of chemicals contained in explosives. The report describes limitations of trace detection in general and the current technologies in particular. It then presents a discussion of the potential for mass spectrometry to improve EDT including challenges faced by such a system, recommendations for starting a program to take advantage of mass spectrometry, and recommendations for a phased implementation plan.

Download or read book Ion Chromatography mass Spectrometry Analysis of Explosives and Explosives Residue written by Robert W. Gillette and published by . This book was released on 2006 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Explosives by Liquid Chromatography Negative Ion Chemical Ionization Mass Spectrometry written by CE. Parker and published by . This book was released on 1982 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: On-line high performance liquid chromatography (HPLC)-negative ion chemical ionization (NCI) mass spectrometry has been used for the analysis of explosives mixtures. The liquid chromatography-mass spectrometry (LC/MS) interface used was a commercial direct liquid introduction interface allowing about 1% of the solvent/sample effluent into the ion source. The HPLC mobile phases were acetronitrile/water (50:50) and methanol/water (50:50), which served also as NCI reagent gases. Standard mixtures containing 2,4,6-trinitrotoluene (TNT), cyclonite (RDX), tetryl, and pentaerythritol tetranitrate (PETN), and a military explosive, tetrytol, have been analyzed by the LC/MS system. The minimum detectable amount of TNT was 100 ng injected on column, or approximately 1 ng to the ion source.