Evaluation of Shooting Distance by AFM and FTIR/ATR Analysis of GSR

Mou, Yongyan; Lakadwar, Jyoti; Rabalais, J. W.

doi:10.1111/j.1556-4029.2008.00854.x

Cited by 28 publications

(12 citation statements)

References 14 publications

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“…Consequently, AFM imaging will only have any value when combined to one of the indicated techniques. Such a combination of technologies has been reported to be successful to evaluate shooting distances based on the shape and size of GSR (Quesant Q-Scope 250 Nomad) [57]. D'Uffizi et al explored micromechanical and micromorphological features of gunshot residue particles deposited on bullets and hands of a shooter and collected with double-sided tape.…”

Section: Gunshot and Explosive Residuesmentioning

confidence: 99%

Forensic Potential of Atomic Force Microscopy with Special Focus on Age Determination of Bloodstains

Smijs¹,

Hosseinzoi²,

Galli³

2019

Atomic-Force Microscopy and Its Applications

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An important aspect of any crime scene investigation is to detect, secure and analyze trace evidence. In forensic examinations where topographic characterization is important like in fingermark, textile and document forgery examinations, the atomic force microscopy (AFM) imaging technique can be of value. However, it is the force spectroscopy that could make AFM a versatile tool in crime investigations. Particularly, the ability to measure changes in mechanical properties of forensic trace material over time makes this technology in potential interesting for forensic examinations. The usefulness of force measurements to evaluate the elasticity of red blood cells (RBCs) in relation to the age of a bloodstain is an interesting example. With minimally invasive AFM technology, timedependent alterations in the viscoelasticity of RBCs that occur during the aging of bloodstains can be featured. A discrimination between traces left by the perpetrator and other persons that have been present at the crime scene will thus be enabled. A recently obtained proof-of-concept demonstrating the usefulness of AFM for age estimation of bloodstains will be described. Additionally, the usefulness of AFM imaging and force spectroscopy for human hair, document forgery, textile fiber, fingermark and gunshot and explosive residue examinations will be discussed.

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Section: Gunshot and Explosive Residuesmentioning

confidence: 99%

Forensic Potential of Atomic Force Microscopy with Special Focus on Age Determination of Bloodstains

Smijs¹,

Hosseinzoi²,

Galli³

2019

Atomic-Force Microscopy and Its Applications

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“…Teknika hau batez ere tiro egin duen pertsonaren eta jomugaren artean dagoen distantzia ezagutzeko [34,35], balaren sarrerako zuloa identifikatzeko [35] eta munizio eta tiro-aztarnen karakterizaziorako erabili izan da (5. irudia) [36,37].…”

Section: Tiro-aztarna Organikoen Analisiaunclassified

Tiro-aztarnen identifikazioa, auzitegi-laborategien erronka

Unceta

Grijalba²,

Benito³

et al. 2015

EKAIA

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Laburpena: Azken urteotan, su-armen erabilera nabarmen handitu da gure gizartean eta horrek tiro egin ondoren sortutako partikulen analisirako metodologia berriak garatzea ekarri du. Krimenaren gertalekuan tiro-aztarnak (gunshot residue, GSR) osatzen dituzten konposatuen detekzioak eta identifikazioak su-armen erabileraren ebidentzia fidagarria eskaintzen dute. Tiro-aztarnak erretako eta erre gabeko partikulen multzoa dira, munizioa erretzen denean sortutakoak eta su-armak berak, jaurtigaiak eta kartutxoak askatutako konposatuez osatuak. Tiro egin ostean, partikulak tiroa gertatu den tokiaren inguruan jalkitzen dira, baina, batez ere, tiratzailearen gorputzean (eskuak, sudurra eta ilea) eta arropetan. Gaur egun, GSR partikulen ohiko analisia konposatu ez-organikoen identifikazioan oinarritzen da. Konposatu organikoen azterketak (organic gunshot residues, OGSR) lagin baten froga-balioa indartu dezake. Hala ere, gutxi dira OGSRen dudarik gabeko identifikaziorako guztiz sentikorrak diren metodoak. Lan honetan, beraz, tiro-aztarnen lagin-biltzea eta analisirako teknika aipagarrienak laburbildu eta berrikusten dira. Hitz-gakoak:Auzitegiko zientzia, tiro-aztarna ez-organikoak (IGSR), tiro aztarna organikoak (OGSR), lagin-biltzea, metodo analitikoak. Abstract:In the last years, the use of firearms has increased considerably in our society which has raised the development of new analytical methodologies in order to detect the particles formed during shooting. The detection and identification of compounds consistent with gunshot residues (GSR) in a crime scene provides forensic evidence of the use of firearms. These particles are a set of burned and unburned particles formed as a result of the combustion process of ammunition and contain components expelled from the firearm itself, the projectile and the cartridge case. After the discharge, particles are deposited on all surfaces in the vicinity where the shot has taken place but mainly in shooter's body (hands, nose and hair) and clothing. Currently, conventional analysis of GRS is focused on inorganic components. The study of organic components may strengthen the probative value of a sample. However, only a few studies propose analytical methods sensitive enough to identify OGSR. The cur-

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“…On the other hand, vibrational spectroscopic techniques like infrared and Raman have acquired special significance whereas they merge a variety of features (Doty et al 2016;Mou et al 2008). Recently, Fourier transform infrared (FTIR) spectroscopy is now being incorporated as a genuinely valuable GSR evaluation method with sufficient precision and flexibility for the detection of organic compounds in GSRs (Bueno et al 2012;López-López et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Vibrational spectroscopy and chemometrics in GSR: review and current trend

Jain

Yadav²

2021

Egypt J Forensic Sci

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Background This review represents many significant methods of chemometrics applied as data assessment methods originated by many hyphenated analytical techniques containing their application since its origin to today. Main body of the abstract The study has been divided into many parts, which contain many multivariate regression methods. The main aim of this study is to investigate the chemometrics tools used in GSR (gunshot residue) or forensic ballistics. Short conclusion As a final point, the end of part of this review deals with the applicability of chemometric methods in forensic ballistics. We select to give an elaborate description of many significant tools established with their algorithm in admire of utilizing and accepting them by researchers not very aware with chemometrics.

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Evaluation of Shooting Distance by AFM and FTIR/ATR Analysis of GSR

Cited by 28 publications

References 14 publications

Forensic Potential of Atomic Force Microscopy with Special Focus on Age Determination of Bloodstains

Forensic Potential of Atomic Force Microscopy with Special Focus on Age Determination of Bloodstains

Tiro-aztarnen identifikazioa, auzitegi-laborategien erronka

Vibrational spectroscopy and chemometrics in GSR: review and current trend

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