Forensic Application of X-ray Fluorescence Spectroscopy for the Discrimination of Authentic and Counterfeit Revenue Stamps-Reference-Cited by-同舟云学术

Forensic Application of X-ray Fluorescence Spectroscopy for the Discrimination of Authentic and Counterfeit Revenue Stamps

Published:2016-07-20 Issue:11 Volume:70 Page:1910-1915
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

Author:

Melendez-Perez Jose Javier¹,Correa Deleon Nascimento¹²,Hernandes Vinicius Veri¹,de Morais Damila Rodrigues¹,de Oliveira Rodrigo Borges³,de Souza Wanderley³,Santos Jandyson Machado¹,Eberlin Marcos Nogueira¹

Affiliation:

1. ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas—UNICAMP, Brazil

2. Technical-Scientific Police Superintendency, Criminalistic Institute Dr. Octávio Eduardo de Brito Alvarenga —IC-SPTC-SP, São Paulo, Brazil

3. National Institute of Metrology, Quality and Technology—INMETRO, Rio de Janeiro, Brazil

Abstract

Energy-dispersive X-ray fluorescence (ED-XRF) spectroscopy with data treatment via chemometric tools was explored as an analytical protocol to discriminate between authentic and counterfeit revenue stamps. Untreated samples were directly analyzed, and the discrimination was based on the characterization of constituent elements present in the inks and paper. Authentic samples and samples that were suspected of being counterfeit were analyzed at three different areas on their surfaces: the ink-printed area, the non-printed area, and the holographic area. Principal component analysis (PCA) was applied to the data to discriminate between authentic and counterfeit revenue stamps. Major differences in the elemental composition were noted (according to chemometrics and t-test, p < 0.05), and ED-XRF spectroscopy plus PCA protocol is proposed for use by non-specialist operators to screen for counterfeit stamps.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Link

http://journals.sagepub.com/doi/pdf/10.1177/0003702816645352

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