Forensic analysis of C4 explosive residues on post blast hair samples

The occurrence of crimes involving high explosives in Malaysia in recent years has warrant the need for the analysis of high explosives in post blast samples, particularly residues that could be found on hairs of victims. This study reports on the detection of post blast residues of C4 explosives on...

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التفاصيل البيبلوغرافية
المؤلف الرئيسي:	Abu Bakar, Noor Hidayat
التنسيق:	أطروحة
اللغة:	English
منشور في:	2012
الموضوعات:	Q Science (General)
الوصول للمادة أونلاين:	http://eprints.utm.my/id/eprint/36559/5/NoorHidayatAbuBakarMFS2012.pdf
الوسوم:	إضافة وسم لا توجد وسوم, كن أول من يضع وسما على هذه التسجيلة!

id	my-utm-ep.36559
record_format	uketd_dc
spelling	my-utm-ep.365592018-05-27T08:12:44Z Forensic analysis of C4 explosive residues on post blast hair samples 2012-01 Abu Bakar, Noor Hidayat Q Science (General) The occurrence of crimes involving high explosives in Malaysia in recent years has warrant the need for the analysis of high explosives in post blast samples, particularly residues that could be found on hairs of victims. This study reports on the detection of post blast residues of C4 explosives on human head hairs. Natural and dyed human head hairs were selected as hair sample in this research. The identification of human head hair on its medullary index (MI) was conducted by using microscopic examination. All hair samples gave MI values of 0.13 µm to 0.29 µm indicative of human head hairs. Prior to a simulated explosion, a bundle of hair (200 strands) was tightly bound to a metal hook at each point of several pre-determined distances from the blast point. Hair samples containing post blast residues were extracted by ultrasonication using acetonitrile. Two analytes of interest, cyclotrimethylenetrinitramine (RDX) and pentaerythritol tetranitrate (PETN) were successfully separated using gas chromatography with electron capture detector (GC-ECD) on an HP5-MS capillary column. It was found that the amount of explosive residues decreased with increasing distance from the point of blast. At the nearest specified distance of 2.5 m, the amount of PETN residues deposited on hair was much less compared to that of RDX residues 2012-01 Thesis http://eprints.utm.my/id/eprint/36559/ http://eprints.utm.my/id/eprint/36559/5/NoorHidayatAbuBakarMFS2012.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Abu Bakar, Noor Hidayat Forensic analysis of C4 explosive residues on post blast hair samples
description	The occurrence of crimes involving high explosives in Malaysia in recent years has warrant the need for the analysis of high explosives in post blast samples, particularly residues that could be found on hairs of victims. This study reports on the detection of post blast residues of C4 explosives on human head hairs. Natural and dyed human head hairs were selected as hair sample in this research. The identification of human head hair on its medullary index (MI) was conducted by using microscopic examination. All hair samples gave MI values of 0.13 µm to 0.29 µm indicative of human head hairs. Prior to a simulated explosion, a bundle of hair (200 strands) was tightly bound to a metal hook at each point of several pre-determined distances from the blast point. Hair samples containing post blast residues were extracted by ultrasonication using acetonitrile. Two analytes of interest, cyclotrimethylenetrinitramine (RDX) and pentaerythritol tetranitrate (PETN) were successfully separated using gas chromatography with electron capture detector (GC-ECD) on an HP5-MS capillary column. It was found that the amount of explosive residues decreased with increasing distance from the point of blast. At the nearest specified distance of 2.5 m, the amount of PETN residues deposited on hair was much less compared to that of RDX residues
format	Thesis
qualification_level	Master's degree
author	Abu Bakar, Noor Hidayat
author_facet	Abu Bakar, Noor Hidayat
author_sort	Abu Bakar, Noor Hidayat
title	Forensic analysis of C4 explosive residues on post blast hair samples
title_short	Forensic analysis of C4 explosive residues on post blast hair samples
title_full	Forensic analysis of C4 explosive residues on post blast hair samples
title_fullStr	Forensic analysis of C4 explosive residues on post blast hair samples
title_full_unstemmed	Forensic analysis of C4 explosive residues on post blast hair samples
title_sort	forensic analysis of c4 explosive residues on post blast hair samples
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2012
url	http://eprints.utm.my/id/eprint/36559/5/NoorHidayatAbuBakarMFS2012.pdf
_version_	1747816433834786816

Forensic analysis of C4 explosive residues on post blast hair samples

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