Statistical Challenges in the Quantification of Gunshot Residue Evidence

Gauriot, Romain; Gunaratnam, Lawrence; Moroni, Rossana; Reinikainen, Tapani; Corander, Jukka

doi:10.1111/1556-4029.12179

Cited by 22 publications

(10 citation statements)

References 14 publications

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“…The recommendation on the securing clothing of the suspects due to a rapid loss of the GSR particles from people's hands appears to be right also for increasing the possibility of detection of a greater number of particles, when examining more evidence items. The value of analytical findings as a group of particles revealing defined chemical and morphological characteristics rather than solely their number was also demonstrated by Gauriot et al [21]. …”

Section: Resultsmentioning

confidence: 78%

Scanning Electron Microscopy and X-Ray Microanalysis for Chemical and Morphological Characterisation of the Inorganic Component of Gunshot Residue: Selected Problems

Brożek‐Mucha

2014

BioMed Research International

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Chosen aspects of examinations of inorganic gunshot particles by means of scanning electron microscopy and energy dispersive X-ray spectrometry technique are presented. The research methodology of particles was worked out, which included a precise and repeatable procedure of the automatic detection and identification of particles as well as the representation of the obtained analytical data in the form of the frequencies of occurrence of particles of certain chemical or morphological class within the whole population of particles revealed in a specimen. On this basis, there were established relationships between the chemical and morphological properties of populations of particles and factors, such as the type of ammunition, the distance from the gun muzzle to the target, the type of a substrate the particles sediment on, and the time between shooting and collecting the specimens. Each of these aspects of examinations of particles revealed a great potential of being utilised in casework, while establishing various circumstances of shooting incidents leads to the reconstruction of the course of the studied incident.

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Section: Resultsmentioning

confidence: 78%

Scanning Electron Microscopy and X-Ray Microanalysis for Chemical and Morphological Characterisation of the Inorganic Component of Gunshot Residue: Selected Problems

Brożek‐Mucha

2014

BioMed Research International

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“…Raman spectroscopic analysis of GSR has the potential to ameliorate several drawbacks presently facing the field. Currently, suspects are linked to shooting incidents by probabilistic determinations, dependent upon the number of GSR particles identified on a suspect . The concept is based on the fact that the distribution and volume of GSR particles decreases as distance increases from the firearm discharge.…”

Section: Trace Evidencementioning

confidence: 99%

What can Raman spectroscopy do for criminalistics?

Doty

Muro

Bueno

et al. 2015

J Raman Spectroscopy

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For decades Raman spectroscopy has been used as a specialized tool in a variety of fields. Forensic science is one discipline in particular that has greatly benefited from the application of Raman spectroscopic research. Here, studies using Raman spectroscopy for analyzing criminalistic evidence, including body fluids, human tissue, bones, gunshot residue, fibers, and hair, are reviewed. Many of these methods demonstrate the significance of incorporating chemometrics for data analysis to provide more reliable and quantitative results with associated errors. Currently, there are only a few branches of forensic science that use Raman spectroscopy in practice, despite its wide range of advantages. However, many more applications have been developed in the research setting and are presented here. These studies showcase the versatility and dependability of Raman spectroscopy, specifically for criminalistic purposes. The advantages of developing and transitioning these techniques to be used in practice are also discussed, including the tremendous benefits of portable instrumentation. Raman spectroscopy can easily become an established analytical technique for many criminalistics disciplines because it allows for obtaining real‐time, rapid, impartial, statistically confident results. Consequently, the improvements to forensic science as a whole will be revolutionary. Copyright © 2015 John Wiley & Sons, Ltd.

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“…As the use of likelihood ratios and the Bayesian approach is not the focus of this review, we refer the reader to the wide discussion of the topic in the available literature (e.g. (68,74)).…”

Section: Discussionmentioning

confidence: 99%

The fate and behaviour of gunshot residue: recreational shooter distribution

Blakey

Sharples

Chana

et al. 2019

Australian Journal of Forensic Sciences

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The fate and behaviour of gunshot residue: recreational shooter distribution http://researchonline.ljmu.ac.uk/id/eprint/10305/ Article LJMU has developed LJMU Research Online for users to access the research output of the University more effectively. ABSTRACTA review of the literature concerning the fate and behaviour of gunshot residue (GSR) is presented.A number of concomitant parameters including firearm and ammunition type, plume and GSR material characteristics, travel distances, chemical composition and GSR morphology are critically discussed in relation to their effects on the distribution and deposition, transfer and persistence processes of GSR. The underlying mechanisms associated with such processes are also considered.Knowledge of these processes on GSR materials could provide valuable information concerning scene preservation and subsequent forensic sampling. The number of GSR particles deposited can vary significantly with each firearm discharge, highlighting the potential to produce distinctive data in each individual case. With the continual development and compositional changes of new ammunition types, further evaluation of the effect these processes may have on GSR evidence and their possible influence on the interpretation of the analytical results should be given due consideration.

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Statistical Challenges in the Quantification of Gunshot Residue Evidence

Cited by 22 publications

References 14 publications

Scanning Electron Microscopy and X-Ray Microanalysis for Chemical and Morphological Characterisation of the Inorganic Component of Gunshot Residue: Selected Problems

Scanning Electron Microscopy and X-Ray Microanalysis for Chemical and Morphological Characterisation of the Inorganic Component of Gunshot Residue: Selected Problems

What can Raman spectroscopy do for criminalistics?

The fate and behaviour of gunshot residue: recreational shooter distribution

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