Application of luminescent markers to ammunition encoding in forensic routine using a Video Spectral Comparator (VSC)

Caroline R. Carneiro; Carolina S. Silva; Maria Fernanda Pimentel; Márcio Talhavini; Ingrid T. Weber

doi:10.1016/j.microc.2020.105362

Application of luminescent markers to ammunition encoding in forensic routine using a Video Spectral Comparator (VSC)

Caroline R. Carneiro
, Carolina S. Silva
, Maria Fernanda Pimentel
, Márcio Talhavini
, Ingrid T. Weber^*

^*Corresponding author for this work

Not published at VTT

Research output: Contribution to journal › Article › Scientific › peer-review

6 Citations (Scopus)

Abstract

Gunshot residue (GSR) is an important part of forensic evidence. The implementation of non-toxic ammunition (NTA) hampers GSR characterization by conventional techniques. As an alternative, the incorporation of luminescent markers to ammunition has been proposed. The possibility of aggregation of different markers into gunpowder enables the possibility of ammunition encoding. Thus, the main objective of this study was to differentiate and evaluate for forensic use two previously studied ammunition markers based on europium ion (Eu(BTC) and Eu(BDC)) by employing a Video Spectral Comparator (VSC), well-known and widely used in scientific police laboratories. Chemometric methods demonstrated an unequivocal identification of the LGSR tested samples resulting in a 100% correct classification rating using Partial Least Squares Discriminant Analysis (PLS-DA).

Original language	English
Article number	105362
Journal	Microchemical Journal
Volume	159
DOIs	https://doi.org/10.1016/j.microc.2020.105362
Publication status	Published - Dec 2020
MoE publication type	A1 Journal article-refereed

Funding

The authors would like to acknowledge the funding agencies INCTAA (Processes n°.: CNPq 573894/2008-6 ; FAPESP 2008/57808-1 ), NUQAAPE –FACEPE (APQ-0346-1.06/14), Núcleo de Estudos em Química Forense – NEQUIFOR (CAPES AUXPE 3509/2014, Call PROFORENSE 2014), CNPq (428891/2018-7), FACEPE (BFP-0800-1.06/17) and CAPES.

Keywords

Ammunition encoding
Chemometrics
Emission spectroscopy
Gunshot residue (GSR)
Luminescent markers
Video Spectral Comparator (VSC)

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10.1016/j.microc.2020.105362

Cite this

@article{b74471e5c7d4453682281a54de3b4700,

title = "Application of luminescent markers to ammunition encoding in forensic routine using a Video Spectral Comparator (VSC)",

abstract = "Gunshot residue (GSR) is an important part of forensic evidence. The implementation of non-toxic ammunition (NTA) hampers GSR characterization by conventional techniques. As an alternative, the incorporation of luminescent markers to ammunition has been proposed. The possibility of aggregation of different markers into gunpowder enables the possibility of ammunition encoding. Thus, the main objective of this study was to differentiate and evaluate for forensic use two previously studied ammunition markers based on europium ion (Eu(BTC) and Eu(BDC)) by employing a Video Spectral Comparator (VSC), well-known and widely used in scientific police laboratories. Chemometric methods demonstrated an unequivocal identification of the LGSR tested samples resulting in a 100\% correct classification rating using Partial Least Squares Discriminant Analysis (PLS-DA).",

keywords = "Ammunition encoding, Chemometrics, Emission spectroscopy, Gunshot residue (GSR), Luminescent markers, Video Spectral Comparator (VSC)",

author = "Carneiro, \{Caroline R.\} and Silva, \{Carolina S.\} and Pimentel, \{Maria Fernanda\} and M{\'a}rcio Talhavini and Weber, \{Ingrid T.\}",

year = "2020",

month = dec,

doi = "10.1016/j.microc.2020.105362",

language = "English",

volume = "159",

journal = "Microchemical Journal",

issn = "0026-265X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Application of luminescent markers to ammunition encoding in forensic routine using a Video Spectral Comparator (VSC)

AU - Carneiro, Caroline R.

AU - Silva, Carolina S.

AU - Pimentel, Maria Fernanda

AU - Talhavini, Márcio

AU - Weber, Ingrid T.

PY - 2020/12

Y1 - 2020/12

N2 - Gunshot residue (GSR) is an important part of forensic evidence. The implementation of non-toxic ammunition (NTA) hampers GSR characterization by conventional techniques. As an alternative, the incorporation of luminescent markers to ammunition has been proposed. The possibility of aggregation of different markers into gunpowder enables the possibility of ammunition encoding. Thus, the main objective of this study was to differentiate and evaluate for forensic use two previously studied ammunition markers based on europium ion (Eu(BTC) and Eu(BDC)) by employing a Video Spectral Comparator (VSC), well-known and widely used in scientific police laboratories. Chemometric methods demonstrated an unequivocal identification of the LGSR tested samples resulting in a 100% correct classification rating using Partial Least Squares Discriminant Analysis (PLS-DA).

AB - Gunshot residue (GSR) is an important part of forensic evidence. The implementation of non-toxic ammunition (NTA) hampers GSR characterization by conventional techniques. As an alternative, the incorporation of luminescent markers to ammunition has been proposed. The possibility of aggregation of different markers into gunpowder enables the possibility of ammunition encoding. Thus, the main objective of this study was to differentiate and evaluate for forensic use two previously studied ammunition markers based on europium ion (Eu(BTC) and Eu(BDC)) by employing a Video Spectral Comparator (VSC), well-known and widely used in scientific police laboratories. Chemometric methods demonstrated an unequivocal identification of the LGSR tested samples resulting in a 100% correct classification rating using Partial Least Squares Discriminant Analysis (PLS-DA).

KW - Ammunition encoding

KW - Chemometrics

KW - Emission spectroscopy

KW - Gunshot residue (GSR)

KW - Luminescent markers

KW - Video Spectral Comparator (VSC)

UR - https://www.scopus.com/pages/publications/85089800228

U2 - 10.1016/j.microc.2020.105362

DO - 10.1016/j.microc.2020.105362

M3 - Article

AN - SCOPUS:85089800228

SN - 0026-265X

VL - 159

JO - Microchemical Journal

JF - Microchemical Journal

M1 - 105362

ER -

Application of luminescent markers to ammunition encoding in forensic routine using a Video Spectral Comparator (VSC)

Abstract

Funding

Keywords

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