Influence of the type of fabric on the collection efficiency of gunshot residues

Charles, Sébastien; Lannoy, Marc; Geusens, Nadia

doi:10.1016/j.forsciint.2013.02.022

Cited by 27 publications

(21 citation statements)

References 11 publications

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“…However, it must also be borne in mind that the nature of the fabric is important. Charles et al [23] have shown that the recovery of 3-component particles from leather is approximately three times more efficient than from cotton and approximately five times more efficient than from wool. The clothing worn by the shooters in Brozek-Mucha's experiments was primarily cotton shirts and jackets as well as jeans [19].…”

Section: Discussionmentioning

confidence: 99%

“…To assign P(E/Hp) the question asked is: What is expected in this situation if X is the person who fired the shot? There are quite a number of articles giving numbers of characteristic particles recovered from hands and clothing of shooters in various situations [10,[19][20][21][22][23][24]. The most recent and comprehensive study was carried out by Brozek-Mucha [19] who examined the deposition of characteristic particles on the hands and clothing of five persons who had each fired one shot from a semiautomatic pistol using Luger 9mm FMJ Sellier & Bellot ammunition, and the persistence of the particles over nine time intervals ranging from 30 to 240 minutes.…”

Section: Lr = P(e/hp)/p(e/hd)mentioning

confidence: 99%

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Evaluation of gunshot residue (GSR) evidence: Surveys of prevalence of GSR on clothing and frequency of residue types

Hannigan

McDermott

Greaney

et al. 2015

Forensic Science International

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Section: Discussionmentioning

confidence: 99%

Section: Lr = P(e/hp)/p(e/hd)mentioning

confidence: 99%

Evaluation of gunshot residue (GSR) evidence: Surveys of prevalence of GSR on clothing and frequency of residue types

Hannigan

McDermott

Greaney

et al. 2015

Forensic Science International

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“…The GSR transfer processes demonstrated in experimental scenarios represent 'extreme' cases where contact has been made immediately after firearm discharge. In reality, the number of GSR particles undergoing secondary transfer may be influenced by a number of additional factors: these may include the frequency of shooting (64), environmental conditions (20), the passage of time, shedding potential (70), and the material of the substrate (78,79). Interpretation based upon experimental data should be approached with caution.…”

Section: Additional Methods Of Transfermentioning

confidence: 99%

“…The sheddability of a fabric may influence the number of GSR particles detected over time. Charles et al (78) noted that the collection efficiency of GSR was more efficient for smoother fabrics such as leather, due to the rate at which the substrate saturated the sampling tape. At t=0 a strong relationship between the sheddability of a fabric and the collection efficiency of GSR was found, with the collection efficiency found to be five-fold higher for leather, compared to wool.…”

Section: Gsr Detection Windowmentioning

confidence: 99%

“…Table 5 highlights the impact that the firearm type, analysis technique, the number of shots, the type of surface and the activity level can have upon the times up to which GSR particles are detectable on a surface. Poor reproducibility in both particle counts and particle distribution between samples taken using the same ammunition and firearm has been reported (29,78,106,110). The difficulty of generalising the period of GSR retention is apparent (6).…”

Section: Gsr Detection Windowmentioning

confidence: 99%

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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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The relevance of gunshot residues in forensic science

Minzière

Gassner

Gallidabino

et al. 2022

WIREs Forensic Science

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Gunshot residues (GSR) are routinely exploited by forensic scientists in the investigation of firearm-related events. While many new techniques are daily reported in the literature for the analysis of GSR, there is still a significant lack of data on the transfer, persistence, and prevalence of GSR. Such fundamental knowledge is essential to fully exploit the information potential of GSR for investigation or in Court. This article provides an overview of the relevant questions related to GSR, more particularly to infer about the trace's origin (i.e., is it from a firearm discharge?) and the activity that caused transfer (e.g., primary, secondary, or subsequent transfer). GSR production and composition will be briefly described, considering both inorganic and organic components. Then, the available knowledge about the primary transfer, the secondary transfer, and the persistence of GSR will be outlined, as well as the prevalence (background level) of the targeted elements and/or compounds in the environment, more particularly on the hands of people unrelated to firearm incidents. Finally, the methods developed for the collection, analysis, and interpretation of GSR will be discussed. A holistic approach combining fundamental forensic science knowledge about GSR transfer, persistence, and prevalence together with other available information is discussed as a path forward to increase the relevance and value of the GSR trace in practice.

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Influence of the type of fabric on the collection efficiency of gunshot residues

Cited by 27 publications

References 11 publications

Evaluation of gunshot residue (GSR) evidence: Surveys of prevalence of GSR on clothing and frequency of residue types

Evaluation of gunshot residue (GSR) evidence: Surveys of prevalence of GSR on clothing and frequency of residue types

The fate and behaviour of gunshot residue: recreational shooter distribution

The relevance of gunshot residues in forensic science

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