Gun shot residue thesis

Q-MS is one of the most commonly used analytical techniques due to its relatively low cost [ 21 ]. Association of Firearm and Toolmark Examiners Journal, 21 2: They are used to increase the stability and workability and to modify the burn rate [ 1323 ].

Essay Paper on Criminals-tic Info

Article posted January 30, Volatile compounds in GSR can be used for the investigation of time since discharge. A range of different ratios can be scanned by varying the magnetic field strength. Fingers, teeth, and feet are, technically, tools which can also leave impressions or marks on victims or other substrates at a crime scene.

However, strong absorption of MC onto the injection tube and the instrument increased the detection limit [ 29 ]. The developed method was able to distinguish between 10 shooters and 10 nonshooters by the analysis of their hands for MC and EC.

Gunshot Residues (Gsr)

Association of Firearm and Toolmark Examiners Journal, 6 4: However, the presence or absence of components may provide valuable information for the inclusion or exclusion of an ammunition type or manufacturer. Characterization Elements It was in ten yearwhen Law Enforcement Technology, 25 3: To determine who may have shot the firearm, the Trace section performs gunshot residue GSR analysis.

Hogg Jane's Ammunition Handbook. It should be mentioned that the other 12 elements of interest only gave low results. The limits of detection for all compounds tested were between 0. We evaluated whether this compositional change could be used to provide an estimate of the time of firing.

Journal of Forensic Sciences, 39 4: Multiple firings were made using two different 9 mm semiautomatic weapons. This master thesis investigates the use of chemically exfoliated graphene, CdSe/CdS/ZnS quantum dots and graphene quantum dots for fluorescence based detection of gunshot residue and explosives.

Specifically, nitroglycerine is chosen as the target substance in gunshot residue and the nitroaromatic compounds trinitrotoluene and dinitrotoluene are chosen as target explosives. Gunshot residue (GSR) is produced during a firearm discharge and its recovery from the hands of a suspect may be used to support an inference that the suspect discharged a firearm.

Gunshot/Explosive Residue Detection from Sirchie. Sirchie is the world leader in criminal investigation and forensic supplies, including gun shot residue, serial number restoration, trace metals supplies and gunshot/explosive residue detection.

Creating an Extended Outline

indicative of gunshot residue (GSR) while finding three of the three is considered unique to a firearm discharge and not naturally occurring.1 The toxicity of these elements varies, and future formulations of non-toxic ammunition may no longer contain all three analytical markers.

This recent trend toward lead-free ammunition, Burleson said, has decreased reliability of gun shot residue analysis and created the need for smarter tests to identify more diverse components of residue in gunpowder, including elements like stabilizers and plasticizers, which are added in the powder during the manufacturing process for safety.

To determine who may have shot the firearm, the Trace section performs gunshot residue (GSR) analysis. To figure out how far the shooter may have been from the victim, the Firearms section performs shooting distance determination.

Gun shot residue thesis
Rated 5/5 based on 69 review
Homeland Security Digital Library