The evaluation of solid phase micro-extraction fibre types for the analysis of organic components in unburned propellant powders

Dalby, Oliver; Birkett, Jason W.

doi:10.1016/j.chroma.2010.09.012

Cited by 43 publications

(68 citation statements)

References 26 publications

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“…Esate baterako, gas-kromatografiaren kasuan, energia termikoaren detektagailuarekin (TEA) [41], elektroi harrapaketaren detektagailuarekin (ECD) [42] eta masa-espektrometriarekin (MS) [43,44] batera erabili dira. Halere, gas-kromatografian erabiltzen diren tenperatura altuek nitroglizerinaren eta nitrosodifenilaminen degradazioa eragiten dute [3,27,45].…”

Section: Tiro-aztarna Organikoen Analisiaunclassified

Tiro-aztarnen identifikazioa, auzitegi-laborategien erronka

Unceta

Grijalba²,

Benito³

et al. 2015

EKAIA

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Laburpena: Azken urteotan, su-armen erabilera nabarmen handitu da gure gizartean eta horrek tiro egin ondoren sortutako partikulen analisirako metodologia berriak garatzea ekarri du. Krimenaren gertalekuan tiro-aztarnak (gunshot residue, GSR) osatzen dituzten konposatuen detekzioak eta identifikazioak su-armen erabileraren ebidentzia fidagarria eskaintzen dute. Tiro-aztarnak erretako eta erre gabeko partikulen multzoa dira, munizioa erretzen denean sortutakoak eta su-armak berak, jaurtigaiak eta kartutxoak askatutako konposatuez osatuak. Tiro egin ostean, partikulak tiroa gertatu den tokiaren inguruan jalkitzen dira, baina, batez ere, tiratzailearen gorputzean (eskuak, sudurra eta ilea) eta arropetan. Gaur egun, GSR partikulen ohiko analisia konposatu ez-organikoen identifikazioan oinarritzen da. Konposatu organikoen azterketak (organic gunshot residues, OGSR) lagin baten froga-balioa indartu dezake. Hala ere, gutxi dira OGSRen dudarik gabeko identifikaziorako guztiz sentikorrak diren metodoak. Lan honetan, beraz, tiro-aztarnen lagin-biltzea eta analisirako teknika aipagarrienak laburbildu eta berrikusten dira. Hitz-gakoak:Auzitegiko zientzia, tiro-aztarna ez-organikoak (IGSR), tiro aztarna organikoak (OGSR), lagin-biltzea, metodo analitikoak. Abstract:In the last years, the use of firearms has increased considerably in our society which has raised the development of new analytical methodologies in order to detect the particles formed during shooting. The detection and identification of compounds consistent with gunshot residues (GSR) in a crime scene provides forensic evidence of the use of firearms. These particles are a set of burned and unburned particles formed as a result of the combustion process of ammunition and contain components expelled from the firearm itself, the projectile and the cartridge case. After the discharge, particles are deposited on all surfaces in the vicinity where the shot has taken place but mainly in shooter's body (hands, nose and hair) and clothing. Currently, conventional analysis of GRS is focused on inorganic components. The study of organic components may strengthen the probative value of a sample. However, only a few studies propose analytical methods sensitive enough to identify OGSR. The cur-

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Section: Tiro-aztarna Organikoen Analisiaunclassified

Tiro-aztarnen identifikazioa, auzitegi-laborategien erronka

Unceta

Grijalba²,

Benito³

et al. 2015

EKAIA

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“…This results in signi icantly faster extraction times for stir bars coated with monolithic materials (up to a few hours [7,14]) than for stir bars coated with a thick layer of a material, such as polydimethylsiloxane (PDMS) (up to 72 hours [20]). Monotrap TM is suitable for non-polar to polar compounds [19] and it requires only 200 μL of solvent to perform the extraction, which is both environmentally and economically advantageous [4]. MonoTrap TM is available in a silica type and in a type in which the silica frame contains activated carbon that acts as an adsorptive medium.…”

Section: Monotrapmentioning

confidence: 99%

“…The ability to extract a wide range of OGSR compounds is demonstrated using a standard solution. The selection of the compounds included in the standard is based on previous work, in which relevant compounds associated with propellant are highlighted [4,21]. A comprehensive list of organic compounds associated with propellant and GSR can be found elsewhere [22].…”

Section: Monotrapmentioning

confidence: 99%

“…The vials were sonicated for 1 hour [4], after which the supernatant was centrifuged for 15 minutes and then iltered through a 45 μm PTFE ilter.…”

Section: Methanol Extractions Of Propellant Powdermentioning

confidence: 99%

“…Recently, several methods for the characterisation of OGSR compounds in smokeless propellant powders have been developed [3][4][5]. Both solvent extraction and solid-phase microextraction (SPME) have been employed for this purpose.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Organic compositional analysis of propellant powders using monolithic material sorption extraction (MSSE)-a feasibility study

JW¹

2017

J Forensic Sci Res

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The application of monolithic material sorption extraction, specifi cally MonoTrap TM , to the extraction of organic gunshot residue (OGSR) compounds from unburnt propellant powders is described. Four different MonoTraps were assessed for their capability to extract OGSR compounds from two different ammunition types. Extracts were analysed using gas chromatography-mass spectrometry. Results indicated that the carbon disc was suitable for the extraction of OGSR compounds from unburnt propellant powders. Quantities for major compounds were comparable to methanol extractions. The method was successfully used to detect a wide range of OGSR compounds, including nitrotoluenes, nitroglycerin, diphenylamines and centralites and is expected to be applicable to a wide range of ammunition types.

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Surface denitration structure on dynamic combustion performance and muzzle flame of mixed nitrate gun propellant

Chen

Liu

et al. 2023

Propellants Explo Pyrotec

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The gun propellant is an inaccessible energy and fuel for projectile to achieve destructive capability in a weapon system. Nitrocellulose/nitroglycerine/triethylene glycol dinitrate(NC/NG/TEGDN) based gun propellant with higher energy level than single‐based gun propellant can meet the demands of modern warfare. Currently, deterring strategy is commonly used to improve the combustion progressivity of NC/NG/TEGDN based gun propellant, together with aggravating the harmful emission phenomena such as muzzle smoke and flame. Therefore, it is essential to design and fabricate NC/NG/TEGDN based gun propellant with both good combustion progressivity and low characteristic signal. In this work, a gradiently denitrated NC/NG/TEGDN based gun propellant was successfully prepared by denitration strategy, whose structure was confirmed by FT‐IR, Raman and SEM. Here, closed bomb vessel test and interior ballistic test were conducted. The results showed that the gradiently denitrated NC/NG/TEGDN based gun propellant exhibited better combustion progressivity and interior ballistic performance than raw gun propellant, and these properties can be controlled by modulating the degree of denitration. Meanwhile, the change laws of the muzzle smoke and flame of the gradiently denitrated NC/NG/TEGDN based gun propellant were investigated by the smoke box method and high‐speed photography. Furthermore, a lower characteristic signal for the gradiently denitrated NC/NG/TEGDN based gun propellant was found compared to the deterred gun propellant by theoretical calculations. This work provides a new idea for preparing and applying a gun propellant with excellent comprehensive performance, including high energy, good combustion progressivity and low characteristic signal.

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The evaluation of solid phase micro-extraction fibre types for the analysis of organic components in unburned propellant powders

Cited by 43 publications

References 26 publications

Tiro-aztarnen identifikazioa, auzitegi-laborategien erronka

Tiro-aztarnen identifikazioa, auzitegi-laborategien erronka

Organic compositional analysis of propellant powders using monolithic material sorption extraction (MSSE)-a feasibility study

Surface denitration structure on dynamic combustion performance and muzzle flame of mixed nitrate gun propellant

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