The analysis of latent fingermarks on polymer banknotes using MALDI-MS

SCOTCHER, K and BRADSHAW, Robert (2018). The analysis of latent fingermarks on polymer banknotes using MALDI-MS. Scientific reports, 8 (1), p. 8765.

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In September 2016, the UK adopted a new Bank of England (BoE) £5 polymer banknote, followed by the £10 polymer banknote in September 2017. They are designed to be cleaner, stronger and have increased counterfeit resilience; however, fingermark development can be problematic from the polymer material as various security features and coloured/textured areas have been found to alter the effectiveness of conventional fingermark enhancement techniques (FETs). As fingermarks are one of the most widely used forms of identification in forensic cases, it is important that maximum ridge detail be obtained in order to allow for comparison. This research explores the use of matrix-assisted laser desorption/ionisation mass spectrometry (MALDI-MS) profiling and imaging for the analysis of fingermarks deposited on polymer banknotes. The proposed methodology was able to obtain both physical and chemical information from fingermarks deposited in a range of scenarios including; different note areas, depletion series, aged samples and following conventional FETs. The analysis of forensically important molecular targets within these fingermarks was also explored, focussing specifically on cocaine. The ability of MALDI-MS to provide ridge detail and chemical information highlights the forensic applicability of this technique and potential for the analysis of fingermarks deposited onto this problematic surface.

Item Type: Article
Additional Information: ** From PubMed via Jisc Publications Router. ** History: received 12-02-2018; accepted 18-05-2018.
Research Institute, Centre or Group - Does NOT include content added after October 2018: Biomedical Research Centre
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Page Range: p. 8765
SWORD Depositor: Margaret Boot
Depositing User: Margaret Boot
Date Deposited: 21 Jun 2018 09:19
Last Modified: 18 Mar 2021 11:52

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