Simultaneous Determination of Antimony and Lead in Gunshot Residue by Cathodic Adsorptive Stripping Voltammetric Methods

Erden, Sevcan; Durmuș, Z.; Kılıç, Esma

doi:10.1002/elan.201000612

Cited by 29 publications

(19 citation statements)

References 35 publications

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“…Partikula ez-organikoen analisirako erabili izan diren teknika analitikoak aktibazio neutroniko bidezko analisia (NAA) [20], xurgapen atomikoko espektroskopia (AAS) [21,22], foto-luminiszentzia [23,24], akoplamendu induktibozko plasma-emisio atomikoko espektrometria (ICP-AES) [25], akoplamendu induktibozko plasma-masa espektrometria (ICPMS) [26,27], ekorketa bidezko mikroskopia elektronikoa (SEM) [28] eta teknika elektrokimikoak dira [29].…”

Section: Tiro-aztarna Ez-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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Section: Tiro-aztarna Ez-organikoen Analisiaunclassified

Tiro-aztarnen identifikazioa, auzitegi-laborategien erronka

Unceta

Grijalba²,

Benito³

et al. 2015

EKAIA

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“…The most recent use of the HMDE for GSR analysis was in 2011 in the Kiliç group, where Erden et al. utilized cathodic adsorptive stripping voltammetry (CAdSV) for the simultaneous determination of Sb and Pb 28. Adsorptive accumulation of Sb and Pb in the presence of catechol was carried out on the surface the HMDE in Britton‐Robinson solutions at varying pH values, with prior de‐oxygenation using argon.…”

Section: Electroanalysis Of Gunshot Residuementioning

confidence: 99%

Electrochemical Detection of Gunshot Residue for Forensic Analysis: A Review

O’Mahony

Wang

2013

Electroanalysis

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Current demands for detection of Gunshot Residue (GSR) require a reliable and rapid decentralized detection system with high sensitivity and specificity. This article reviews the use of electrochemical devices for GSR detection over the last 35 years and highlights recent advances associated with the demands of GSR field detection such as portability, speed, cost and power. Anodic stripping voltammetry (ASV) has been widely implemented for the detection of the metallic components of GSR at a variety of working electrodes. Efforts toward the detection of the organic components of GSR have also been reported using cyclic-and square-wave voltammetry. The simultaneous detection of both organic and inorganic GSR constituents has recently been examined to increase the overall information content in a single voltammetric scan. As well as this, exploitation of screen-printing fabrication allows replacement of conventional electrochemical cells with easy-to-use sensor strips Sampling methods for electrochemical GSR analysis are also advancing from acid washes or swabs to simpler abrasive methods which integrate sampling and analysis obviating the need for intermediate processing steps. The latest direction of electrochemical detection of GSR involves chemometric treatment to evaluate data allowing for more objective conclusions and increasing the automation of the system. These advances indicate great promise for investigating firearm-related crimes, and bring significant changes to the detection of GSR making electroanalysis a powerful tool for decentralized forensic analysis.

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“…Many voltammetric studies, including stripping methods for determination of antimony, have focused on the modification of the electrode surface or use of a chelating/complexing agent to increase the detection limit. With this aim, different complexing reagents such as catechol [33,44], chloranilic acid [34,36], morin [35], gallocyanine [37], pyrogallol red [38], pyrogallol [39,41,42], alizarin red S [40], 4-(2-thiazolylazo)-resorcinol [43], quercetin [45], and quercetin-5 -sulfonic acid [46] have been successfully used for determination of Sb(III) on a mercurybased electrode. Recently, carbon-based electrodes have attracted attention in electroanalytical studies as an attractive alternative to mercury electrodes in stripping analysis due to their many advantages.…”

Section: Introductionmentioning

confidence: 99%

“…Mercury-based electrodes have been widely preferred as the working electrode in antimony determination. This is due to the ability of mercury to form amalgams with a number of metals on the electrode surface and to enhance the analytical signal associated with stripping analysis [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][52][53][54]. Many voltammetric studies, including stripping methods for determination of antimony, have focused on the modification of the electrode surface or use of a chelating/complexing agent to increase the detection limit.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, they are more portable than the aforementioned techniques . The stripping voltammetric techniques including anodic stripping voltammetry (ASV) [21][22][23][24][25][26][27][28][29][30][31] and adsorptive stripping voltammetry (AdSV), based on the interfacial accumulation and voltammetric determination of metal complexes [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51], are those most commonly employed in the determination of antimony due to their lower detection limits. Mercury-based electrodes have been widely preferred as the working electrode in antimony determination.…”

Section: Introductionmentioning

confidence: 99%

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