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Now showing items 11-20 of 31
Synthesis of nanoparticles of iron oxide, silver and gold for photodegradation and detection of 2,4,6-trinitrotoluene
(2013)
Various nano-structured materials were synthesized to be used in the purification and detection of contaminants in water. Iron oxides and extruded polystyrene/TiO2 nanocomposites were synthesized, characterized and evaluated ...
Detection and discrimination of high explosives on human hair by Raman scattering
(2020-05-29)
High explosives (HE) represent a high risk to the safety and health of the general population. Therefore, there is an ongoing demand for methods of analysis with limits of detection at trace levels for these hazardous ...
Quantum cascade laser-grazing angle spectroscopy detection of high explosives deposited on various substrates using air spray
(2020-04-19)
The mid-infrared (MIR) laser reflectance of samples of high explosives (HEs) deposited on reflective and matte substrates using spray deposition was measured and used to generate multivariate (MVA) models for the analysis ...
Synthesis, formation mechanism and characterization of peroxide homemade explosives
(2013)
An important consideration in the area of homemade explosives, which are made from household products, is that it is difficult to control their production and use in terrorist activities. Therefore, security and defense ...
Cyclic organic peroxides identification and trace analysis by Raman microscopy and open-air chemical ionization mass spectrometry
(2009)
The persistent use of cyclic organic peroxides in explosive devices has increased the interest in study these compounds. Development of methodologies for the detection of triacetone triperoxide (TATP) and hexamethylene ...
Standoff laser-Induced thermal emission of explosives
(2013)
A laser mediated methodology for remote thermal excitation of analytes followed by standoff infrared (IR) detection is proposed. The goal of this study was to determine the feasibility of using laser induced thermal emission ...
Remote infrared spectroscopy detection of highly energetic materials
(2015-12)
An Open-Path Standoff Detection System was designed using a telescope coupled to a EM27 Fourier Transform infrared spectrometer equipped with a mercury cadmium telluride (MCT) cryocooled detector. Samples of highly energetic ...
Experimental and Dft Studies of the mechanism of cetone-peroxide formation reaction using Raman and nuclear magnetic resonance spectroscopies
(2009)
A mechanism for the reaction between acetone and hydrogen peroxide leading to the formation of the important homemade explosive Acetone Peroxide is postulated. The proposed mechanistic scheme is based on Raman and Nuclear ...
Dependence of active mode remote Ft-Ir sensing on angle of incidence, substrate type and analyte surface concentration
(2013-12)
A standoff detection scheme for a highly energetic material (HEM) and other threat chemicals deposited on substrates as contamination residues using Fourier transform infrared spectroscopy (FTIR) is described. The HEM used ...
Surface enhanced Raman spectroscopy of vegetative cells and endospores of Bacillus thuringiensis as a model for detection of biothreats
(2012-05)
The development of rapid and efficient techniques for biological detection, identification and classification has a positive impact in fields ranging medical, environmental and industrial microbiology to biological warfare ...