Journal
FORENSIC SCIENCE INTERNATIONAL
Volume 207, Issue 1-3, Pages 215-222Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.forsciint.2010.10.011
Keywords
Personal identification; Latent fingermaks; Aqueous electrolytes; Metals; Non-metals; Corrosion
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Funding
- Council of Scientific and Industrial Research, Human Resource Development Group, Govt. of India, New Delhi
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In this work we present our observations on the interaction between metallic (copper, aluminum, iron, brass, zinc) and non-metallic (glass and plastic) surfaces bearing latent fingermarks and several aqueous electrolytic solutions. Good quality fingermarks could be observed on some of the metallic and even on non-metallic surfaces after such treatment. The influence of factors such as time interval from deposition, pH of the electrolytes, wiping the latent marks prior to processing and the presence of a second metal on the quality and permanence of the developed impressions have been studied. As a rule, sebaceous marks provided much better quality impressions on all the surfaces. Initial explanations based on electrochemical processes are suggested. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
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