Determination of the postexplosion residues of nitro group containing explosives in soil with GC-MS and GC-TEA

Download

index.pdf

Date

2007

Author

Dursun, Hayrettin

Metadata

Show full item record

Item Usage Stats

262
views

131
downloads

There is an increase in bombing assaults in recent years in our country. Determining the explosive material used in these cases by the quick and correct analysis of the evidence obtained after the explosions, is an important starting point for the investigations which are done to reach the perpetrators. The forensic chemistry investigations have to be correct, exact and rapid in order to reach the right criminal. In this study, the Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography-Thermal Energy Analyser (GC-TEA) methods which are being used for the determination of the explosive materials’ residues used in bombing attacks are optimized with the standard solutions of 2,4,6-Trinitrotoluene (TNT) and 1,3,5-trinitro-1,3,5-triazocyclohexane (RDX) and standard mixture solution. The two methods were compared by analysing the postexplosion soil samples. Also an efficient and applicable sample preparation procedure was developed. The results showed that both methods are efficient and sensitive for the postexplosion investigations. It is seen that GC-TEA has lower detection limit and simple chromatograms due to its selectivity against only nitro group containing explosives. However it is concluded that there is a need for a reliable and sensitive method like GC-MS which provides identification and library search, for the determination of the organic components which can not be identified with GC-TEA

Subject Keywords

Analytical Chemistry.

URI

http://etd.lib.metu.edu.tr/upload/2/12609014/index.pdf
https://hdl.handle.net/11511/17337

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

The Dynamic response of steel beam-column elements under blast loading Gevrek, Mebrure Itır; Yılmaz, Çetin; Department of Civil Engineering (2016) The intensity of terrorist activities and threats have become a major problem in modern world. Several factors in the way modern societies live have made easier to conduct terrorism activities. Developed societies are dependent on complex and vulnerable systems that could be target, such as railways, pipelines, large shopping areas, airlines, subway systems and large business/trade centers. The increase in the number of domestic and international terrorist activities by each passing day have forced research...
SURVEILLANCE IN GERMANY AFTER 9/11 The case of immigrants from Turkey Topal, Çağatay (2008-01-01) After the terrorist attacks on September 11, 2001, surveillance pressure on immigrants increased considerably. The trend was the globalization of surveillance of the world population but especially of immigrants. 9/11 was not a turning point, however, since surveillance was already headed towards being globalized. The post-9/11 context accelerated this process. The economic and political developments that have taken place after 9/11 demonstrate that the processes of globalization, immigration and surveillan...
Does Income Inequality Derive the Separatist Terrorism in Turkey? Derin Güre, Pınar (Informa UK Limited, 2014-05-04) Separatist terrorism has been a severe problem for Turkey since the mid-1980s. The conventional wisdom contends that economic deprivation in southeastern Turkey is the fundamental reason for the long-running battle against the Kurdish rebels. Considering that there is limited empirical literature on the roots of terrorism in Turkey, yielding conflicting results about the claim that the main cause of terrorism is deprived economic conditions, this study aims to answer whether there is a causal relationship b...
A Hadoop solution for ballistic image analysis and recognition Kocakulak, Hakan; Taşkaya Temizel, Tuğba (2011-07-08) The importance of ballistic applications has been recently recognized due to the increasing crime and terrorism threats and incidents around the world. Ballistic image analysis is one of the application areas which requires immediate response with high precision from large databases. Here, the microscopic markings on cartridge case of a bullet obtained in a crime scene are compared with that of images on ballistic databases for similarity in order to find out whether it is fired from any of the firearms wit...
Damage analysis and assessment in bridge like structures due to high explosive blast load Erdolu, Ömer; Kayran, Altan; Department of Aerospace Engineering (2016) In recent years, number of explosion attacks on civilian structures is on rise. Fast methods for damage analysis of civilian structures exposed to external blast loads are especially important in the preliminary design stage of structures to implement frequent design changes to come up with more resistant structures. Single degree of freedom (SDOF) approach is a preferable method for fast damage analysis of structures exposed to blast loads. In this thesis, a new damage level calculation tool for external b...

Citation Formats

H. Dursun, “Determination of the postexplosion residues of nitro group containing explosives in soil with GC-MS and GC-TEA,” M.S. - Master of Science, Middle East Technical University, 2007.