Forensic analysis of explosives using isotope ratio mass spectrometry (IRMS) — Preliminary study on TATP and PETN

The application of isotopic techniques to investigations requiring the provision of evidence to a Court is limited. The objective of this research was to investigate the application of light stable isotopes and isotope ratio mass spectrometry (IRMS) to solve complex forensic cases by providing a level of discrimination not achievable utilising traditional forensic techniques.Due to the current threat of organic peroxide explosives, such as triacetone triperoxide (TATP), research was undertaken to determine the potential of IRMS to differentiate samples of TATP that had been manufactured utilising different starting materials and/or manufacturing processes. In addition, due to the prevalence of pentaerythritoltetranitrate (PETN) in detonators, detonating cord, and boosters, the potential of the IRMS technique to differentiate PETN samples from different sources was also investigated.Carbon isotope values were measured in fourteen TATP samples, with three definite groups appearing in the initial sample set based on the carbon data alone. Four additional TATP samples (in a second set of samples) were distinguishable utilising the carbon and hydrogen isotopic compositions individually, and also in combination with the oxygen isotope values. The 3D plot of the carbon, oxygen and hydrogen data demonstrated the clear discrimination of the four samples of TATP. The carbon and nitrogen isotope values measured from fifteen PETN samples, allowed samples from different sources to be readily discriminated.This paper demonstrates the successful application of IRMS to the analysis of explosives of forensic interest to assist in discriminating samples from different sources. This research represents a preliminary evaluation of the IRMS technique for the measurement of stable isotope values in TATP and PETN samples, and supports the dedication of resources for a full evaluation of this application in order to achieve Court reportable IRMS results.     

Forensic analysis of explosives using isotope ratio mass spectrometry (IRMS) — Discrimination of ammonium nitrate sources

An evaluation was undertaken to determine if isotope ratio mass spectrometry (IRMS) could assist in the investigation of complex forensic cases by providing a level of discrimination not achievable utilising traditional forensic techniques. The focus of the research was on ammonium nitrate (AN), a common oxidiser used in improvised explosive mixtures.The potential value of IRMS to attribute Australian AN samples to the manufacturing source was demonstrated through the development of a preliminary AN classification scheme based on nitrogen isotopes. Although the discrimination utilising nitrogen isotopes alone was limited and only relevant to samples from the three Australian manufacturers during the evaluated time period, the classification scheme has potential as an investigative aid.Combining oxygen and hydrogen stable isotope values permitted the differentiation of AN prills from three different Australian manufacturers. Samples from five different overseas sources could be differentiated utilising a combination of the nitrogen, oxygen and hydrogen isotope values. Limited differentiation between Australian and overseas prills was achieved for the samples analysed.The comparison of nitrogen isotope values from intact AN prill samples with those from post-blast AN prill residues highlighted that the nitrogen isotopic composition of the prills was not maintained post-blast; hence, limiting the technique to analysis of un-reacted explosive material.     

Philip Grubb

Dr Philip Grubb, the distinguished patent specialist and authorfound time to answer questions put to him by JIPLP. How did you first become interested in IP? In 1971, I was working as a research scientist at the CorporateResearch Laboratory of ICI in Runcorn, looking for alternativesto a lifetime career in research. A job in the small patentdepartment there was advertised internally. I considered thisbut thought ‘patentssounds difficult, you have to study     

The politics and mythology of organized crime: A Philadelphia case-study

Although much criticized, the “Cosa Nostra” theory of organized crime continues to exert considerable influence over lawmakers and law enforcement officials. This theory has been extensively studied on a national level, but few local case studies trace the transition from the multiethnic organized crime of the 1930s and 1940s to the (supposed) Italian hegemony of the years since 1960. Philadelphia provides an excellent opportunity for such a study, as the base of a strong Jewish-dominated structure before 1960 and a “Mafia town” thereafter.A major concern of this article is the manner in which the history of crime in the city was retroactively rewritten during the 1970s, in order to provide a basis for contemporary theories and bureaucratic needs.     

Results of the Corporate Affairs Survey 2004

The Corporate Affairs Survey 2004 confirms that companies with representation in Brussels continue to increase their communications expenditure. This confirms a trend already identified by the European Centre for Public Affairs in various publications¹ during the 1990s. Realising the importance of public opinion in policy making, the majority of companies are increasing the size of their Brussels staff, with a deliberate emphasis on communication and further resources in public affairs. As most companies recognise the special skill sets of consultants, many plan to continue relying on the latter, particularly in the area of public relations. Copyright © 2004 Henry Stewart Publications     

An Immunological Approach to Counter-Terrorism and Infrastructure Defense Law in Electronic Domains

The West’s increasing dependence upon telecommunicationsand information infrastructures puts at risk the economic, political,and military security of the free world. The purpose hereinis to gauge the extent to which the law properly supplementsand coordinates the defense of that information infrastructure. First undertaken is an overview of the telecommunications vulnerabilitiesand dependencies of the West. The nature of terrorism is thenexplored, and principles of counter-terrorism are examined andapplied specifically with reference to electronic domains. Thereafter,Immunological modeling and principles are surveyed. The analysis continues with an examination of the current postureof Western legal systems, and a comparison of the laws relatingto counter-terrorism in electronic domains before and afterthe events of 11 September. An exploration of continuing vulnerabilitiesthen follows. Finally, recommendations for future defensiveactions are promulgated with the aim of optimizing the roleof law in information infrastructure defense.