Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/235194
Type: Artigo
Title: Anti-theft device staining on banknotes detected by mass spectrometry imaging
Author: Correa, Deleon Nascimento
Zacca, Jorge Jardim
Rocha, Werickson Fortunato de Carvalho
Borges, Rodrigo
Souza, Wanderley de
Augusti, Rodinei
Eberlin, Marcos Nogueira
Vendramini, Pedro Henrique
Abstract: We describe the identification and limits of detection of ink staining by mass spectrometry imaging (MSI), as used in anti-theft devices (ATDs). Such ink staining is applied to banknotes during automated teller machine (ATM) explosions. Desorption electrospray ionization (DESI) coupled with high-resolution and high-accuracy orbitrap mass spectrometry (MS) and a moving stage device were applied to obtain 2D molecular images of the major dyes used for staining, that is, 1-methylaminoanthraquinone (MAAQ), rhodamine B (RB) and rhodamine 6G (R6G). MAAQ could not be detected because of its inefficient desorption by DESI from the banknote cellulose surface. By contrast, ATD staining on banknotes is perceptible by the human naked eye only at concentrations higher than 0.2μgcm(-2), whereas both RB and R6G at concentrations 200 times lower (as low as 0.001μgcm(-2)) could be easily detected and imaged by DESI-MSI, with selective and specific identification of each analyte and their spatial distribution on samples from suspects. This technique is non-destructive, and no sample preparation is required, which ensures sample preservation for further forensic investigations.
We describe the identification and limits of detection of ink staining by mass spectrometry imaging (MSI), as used in anti-theft devices (ATDs). Such ink staining is applied to banknotes during automated teller machine (ATM) explosions. Desorption electro
Subject: Ciências forenses
DESI-MS
Country: Irlanda
Editor: Elsevier
Citation: Forensic Science International. v. 260, p. 22-26, 2015-Oct.
Rights: embargo
Fechado
Identifier DOI: 10.1016/j.forsciint.2015.09.017
Address: https://www.sciencedirect.com/science/article/pii/S0379073815004090
Date Issue: 2016
Appears in Collections:IQ - Artigos e Outros Documentos

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