The fate and behaviour of gunshot residue: recreational shooter distribution

Blakey, Lauren S.; Sharples, George P.; Chana, Kal; Birkett, Jason W.

doi:10.1080/00450618.2019.1569148

Cited by 5 publications

(4 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When a firearm has been fired, there are at least three particles (Sb, Pb, and Ba) of characteristic morphology determined. Consistent particles are two-component particles that can be originated from the environment [12]. The consistent category formation, such as Pb and Sb or Pb and Ba, has been determined in a few occupational residues.…”

Section: Resultsmentioning

confidence: 99%

GSR Analysis by Spectrophotometry Method in Forensic Chemistry

TEKİN,

SEYHAN,

AYDIN

et al. 2023

Dicle Üniversitesi Fen Bilimleri Enstitüsü Dergisi

View full text Add to dashboard Cite

This study was conducted to analyze residual shots from forensic chemistry applications. The entire analysis process was evaluated with Scanning Electron Microscopy/Energy Dispersive X-Ray Spectroscopy (SEM/EDS) and, Graphite Furnace Atomic Absorption Spectrometry (GFAAS)devices, which are among the methods for obtaining efficient results, and positive results were tried to be obtained by comparison. Following the study, it was discussed which results were more appropriate; in particular, the samples' appropriateness for reanalysis was underlined. The presence of shot residues on all samples was determined in the analyses performed with the SEM/EDS device. When the same samples were analyzed with the GFAAS device, the results remained below the threshold value of 10 μg/L, which is the antimony concentration indicating the presence of shot residues. It should be noted that the values we obtained may vary with the size and weight of the shot residue particles. Due to the ease of sample collection, the capacity to identify elements other than gunshot residues on the sample under examination, and the circumstances surrounding the determination of particles below the threshold value, the analysis method utilizing the SEM/EDS device has been deemed more suitable despite its higher cost.

show abstract

Section: Resultsmentioning

confidence: 99%

GSR Analysis by Spectrophotometry Method in Forensic Chemistry

TEKİN,

SEYHAN,

AYDIN

et al. 2023

Dicle Üniversitesi Fen Bilimleri Enstitüsü Dergisi

View full text Add to dashboard Cite

show abstract

“…After firmly fixing both sides of samples with carbon conductive adhesive, the samples were sputtered with gold layer in a vacuum coater. The experimental process was implemented in accordance with ASTM E1588 (2017) [ 25 ], and the sample morphological characteristics were observed using QUANTA 200 SEM system under an accelerating voltage of 30 kV.…”

Section: Methodsmentioning

confidence: 99%

Effects of wood fiber impulse-cyclone drying process on the UV-accelerated aging properties of wood-plastic composites

Chen²,

Sang³

2022

PLoS ONE

View full text Add to dashboard Cite

The impulse-cyclone drying and the silane coupling agent (A187) modification are applied to treat wood fibers under the following conditions: 180°C, 180°C+A187, 200°C+A187, 220°C+A187 and 240°C+ A187. Then, HDPE/wood fiber composites are fabricated with a two-stage plastic extruder, and the effects of impulse-cyclone drying technique on the UV-accelerated aging properties of composites are investigated. Fourier-transform infrared spectroscopy (FTIR) reveals that the silane coupling agent chemically reacts with the hydroxyl groups on the wood fiber surfaces, the anti-UV aging properties of composites is enhanced. Mechanical test shows that during the 0–3000 h of UV aging process, the mechanical properties of samples tend to increase initially and then decrease within a period of time. After 3000 h of UV aging, the specimen 4 exhibits the least loss of mechanical properties, with flexural modulus, flexural modulus and impact strength of 65.40 Mpa, 2082.08 Mpa and 12.85 Mpa, respectively. The effects of impulse-cyclone drying technique on the UV-accelerated aging properties of composites are investigated through Spectrophotometry and Surface microstructure observation. indicates that the ΔL* and ΔE* values increase greatly at the stage of 0–1000 h aging, which though tend to stabilize after 1000 h. The degree of discoloration changes little for specimen 4,and the number of surface cracks is relatively small, which exhibits the optimal aging resistance. In conclusion, the addition of wood fibers treated by impulse-cyclone drying (220°C) and A187 modification is effective in enhancing the anti-UV aging properties of HDPE/wood fiber composites. Nevertheless, such enhancing effect turns to decline when the temperature of impulse-cyclone drying treatment is excessively high.

show abstract

“…Various volatile chemicals such as nitroglycerine, nitro guanine, and others make up the organic component, while heavy metals such as Sb, Pb, Ba, and others make up the inorganic component (Maitre et al, 2018;Shrivastava et al, 2021). These gunshot residues, which are often spherical and have distinct characteristics, might get up on the person carrying the gun's hands, face, or clothing (Dalby et al, 2010;Rijnders et al, 2010;Maitre et al, 2018;Blakey et al, 2019;Rosengarten et al, 2021). There are a variety of ways for collecting GSR samples, and choosing the best one is critical to maintaining optimal collection efficiency.…”

Section: Introductionmentioning

confidence: 99%

Çeşitli İş Kollarında Çalışanların Ellerinden Elde Edilen Yanıltıcı Kalıntı Varlığının Araştırılması

Mert

HİLAL²

2023

Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü Dergisi

View full text Add to dashboard Cite

Handswap analysis is carried out in criminal laboratories in order to illuminate the crime scenes in which firearms are used. The reliability of the results obtained from the analyzes is the subject of the chemistry department and is based on sample reliability. In this study, the hand swabs of people working in fifteen various business lines were obtained using transfer kit in order to acquire a scientific response to the issue of whether there would be shot residues in the hands of people in everyday life. Collected samples were first examined by Scanning Electron Microscopy (SEM-EDS). The elements of Sb&Ba&Pb, as well as their combinations, were investigated in the samples. After SEM-EDS analysis, all samples were analyzed using graphite furnace atomic absorption spectrometry (GFAAS) method to determine the amount of antimony element. According to the results, antimony element was detected on the surface of the caliper used in the printing house via GFAAS. Sb&Ba&Pb particles were also detected by SEM-EDS analysis in the swabs taken from the hands of the automobile battery repairman and the market cashier.

show abstract

The fate and behaviour of gunshot residue: recreational shooter distribution

Cited by 5 publications

References 68 publications

GSR Analysis by Spectrophotometry Method in Forensic Chemistry

GSR Analysis by Spectrophotometry Method in Forensic Chemistry

Effects of wood fiber impulse-cyclone drying process on the UV-accelerated aging properties of wood-plastic composites

Çeşitli İş Kollarında Çalışanların Ellerinden Elde Edilen Yanıltıcı Kalıntı Varlığının Araştırılması

Contact Info

Product

Resources

About