Chapter 7: Latent Fingermark Aging: Chemical Degradation Over Time

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Serval ID
serval:BIB_D442414D18E9
Type
A part of a book
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Publications
Institution
Title
Chapter 7: Latent Fingermark Aging: Chemical Degradation Over Time
Title of the book
Technologies for Fingermark Age Estimations: A Step Forward
Author(s)
Frick Amanda A., Girod-Frais Aline, Moraleda Ana, Weyermann Céline
Publisher
De Alcaraz-Fossoul, Josep (Ed.) Springer
Publication state
Published
Issued date
01/07/2021
Peer-reviewed
Oui
Language
english
Abstract
This chapter aims at presenting an overview of the current knowledge regarding the chemical composition of fingermarks and its modification as a function of time, focusing primarily on the compounds targeted in fingermark detection and/or age estimation purposes. As numerous studies have been published regarding these constituents in various contexts, this discussion will pertain mainly to fingermarks and human skin secretions, with some in vitro experiments where relevant additional information is provided.
Thus, chemical degradation of the main eccrine (e.g., water, amino acids, proteins, lactic acid) and sebaceous (e.g., fatty acids, triglycerides, wax esters) components will be detailed, including illustrations of molecular structures, degradation mechanisms, and products. Four main factors affecting the chemical degradation of fingermark components will also be described, namely, the initial chemical composition (i.e., variations due to interactions between fingermark components, donors’ characteristics, and transfer conditions), the
nature of the substrate, the environment (i.e., variations due to light, air flow, water and ambient humidity, temperature, and microbial activity), and time. Finally, key elements to be considered when conducting fingermark aging studies will be discussed.
Keywords
Eccrine - Sebaceous - Amino acids - Lipids - Fatty acids - Squalene - Oxidation - Ozonolysis - Donor variation - Deposition - Environment - Fingerprints
Create date
14/04/2021 21:44
Last modification date
25/08/2021 6:37
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