Comparison of the discriminating power of Raman and surface-enhanced Raman spectroscopy with established techniques for the examination of liquid and gel inks

S.E.J. Bell; S.P. Stewart; Y.C. Ho; B.W. Craythorne; S.J. Speers

doi:10.1002/jrs.4202

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Comparison of the discriminating power of Raman and surface-enhanced Raman spectroscopy with established techniques for the examination of liquid and gel inks

Journal article

Peer reviewed

Comparison of the discriminating power of Raman and surface-enhanced Raman spectroscopy with established techniques for the examination of liquid and gel inks

S.E.J. Bell, S.P. Stewart, Y.C. Ho, B.W. Craythorne and S.J. Speers

Journal of Raman Spectroscopy, Vol.44(4), pp.509-517

2013

DOI: https://doi.org/10.1002/jrs.4202

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Abstract

The ability to discriminate between inks is important for forensic document analysis. Here, Raman spectroscopy (RS) and surface‐enhanced RS have been compared to the traditional document examination techniques of video spectral comparison and thin layer chromatography on a population of blue and black‐coloured liquid and gel inks. It was found that in most cases, the Raman techniques provided a similar or better discriminating power than the conventional methods. Importantly, this study allowed us to determine whether the same underlying changes in composition were being exploited by the different methods to discriminate between samples. It was found that there was indeed a high degree of commonality in the sample pairs being discriminated by the various techniques. This work can therefore underpin introduction of Raman methods into standard operating procedures for ink analysis since it not only measures the extent of discrimination between samples but can also explain the origin of the spectral changes that are used to distinguish between them.

Details

Title: Comparison of the discriminating power of Raman and surface-enhanced Raman spectroscopy with established techniques for the examination of liquid and gel inks
Authors/Creators: S.E.J. Bell (Author/Creator)
S.P. Stewart (Author/Creator)
Y.C. Ho (Author/Creator)
B.W. Craythorne (Author/Creator)
S.J. Speers (Author/Creator)
Publication Details: Journal of Raman Spectroscopy, Vol.44(4), pp.509-517
Publisher: Wiley
Identifiers: 991005544148907891
Copyright: © 2013 John Wiley & Sons Ltd and Crown
Murdoch Affiliation: Murdoch University
Language: English
Resource Type: Journal article

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Citation topics: 2 Chemistry; 2.244 Chemometrics; 2.244.1784 Forensic Spectroscopy
Web Of Science research areas: Spectroscopy
ESI research areas: Chemistry