The effect of products containing high concentration corrosive substances on the recovery of fingermarks from non-porous surfaces.

Autor: Bleay S; School of Applied Sciences, London South Bank University, 103 Borough Road, London SE1 0AA, United Kingdom. Electronic address: bleays@lsbu.ac.uk., Smart H; School of Applied Sciences, London South Bank University, 103 Borough Road, London SE1 0AA, United Kingdom., Sorensen J; School of Applied Sciences, London South Bank University, 103 Borough Road, London SE1 0AA, United Kingdom., Sears P; School of Chemistry and Chemical Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom.
Jazyk: angličtina
Zdroj: Science & justice : journal of the Forensic Science Society [Sci Justice] 2024 Sep; Vol. 64 (5), pp. 521-532. Date of Electronic Publication: 2024 Aug 06.
DOI: 10.1016/j.scijus.2024.08.003
Abstrakt: Fingermark recovery plays a crucial role in investigating corrosive substance attacks, which are becoming increasingly common. Building upon previous research, this study aimed to identify effective visualization processes for recovering fingermarks from diverse substrates exposed to wide range of commercially available corrosive materials. The study investigated glass, PVC and HDPE substrates with fingermarks deposited 1 day and 2 weeks before exposure to the corrosive substance, and used commercially available substances at concentrations higher than any previous study. It was found that fingermarks could still be recovered from all substrates studied after exposure to most of the corrosive substances, although in general exposure to corrosive substances was detrimental to the quality of marks recovered. The most detrimental corrosive substances were found to be those based on concentrated sulfuric acid. Black and white powder suspensions were the most effective of all processes used in this study, with the highest recovery rates observed from the glass substrate. Age of mark was not found to have a significant effect on recovery rates. Overall the results show that fingermarks may survive exposure to even the most concentrated acids used in this study and provide the initial basis for guidance on processes that could be used on materials used in corrosive substance attacks.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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