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REVISTA DE CHIMIE
https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie, Volume 64, Issue 1, pp. (2013)




Daniela Laura Feraru, Aurelia Meghea, Nicoleta Badea Forensic Discrimination of Ballpoint Pen Inks Based on Correlation of Data Obtained by Optical and Spectral Methods

Abstract:

In routine examination of inks used on questioned documents a series of the nondestructive analytical methods, such as microscopic and optical techniques have been previously applied. However, they are often insufficient to identify the inks used for the preparation of the document. The aim of this work was to evaluate the possibility of discrimination among different inks provided from various sources by corroborating the data obtained by optical and spectrometric methods, such as UV-Vis-NIR, FT-IR and Raman spectroscopy, all of them being recognized as techniques used in forensic science. Surface Enhanced Resonance Raman Scattering technique (SERRS) does not destroy the sample, so that it remains as a valuable nondestructive spectroscopic analysis. Ultraviolet visible near-infrared spectrometer (UV-Vis-NIR) has been used to discriminate a series of ballpoint pen inks within the same coloristic pallet with some degree of success, particularly by a detail use of chromatic analysis provided by CIE L*a*b* analysis. Keywords: ink analysis, reflectance, FT-IR and Raman spectroscopy, chromatic analysis

Issue: 2013 Volume 64, Number 1
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