Chapter 7: Latent Fingermark Aging: Chemical Degradation Over Time

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Etat: Public
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ID Serval
serval:BIB_D442414D18E9
Type
Partie de livre
Collection
Publications
Institution
Titre
Chapter 7: Latent Fingermark Aging: Chemical Degradation Over Time
Titre du livre
Technologies for Fingermark Age Estimations: A Step Forward
Auteur(s)
Frick Amanda A., Girod-Frais Aline, Moraleda Ana, Weyermann Céline
Editeur
De Alcaraz-Fossoul, Josep (Ed.) Springer
Statut éditorial
Publié
Date de publication
01/07/2021
Peer-reviewed
Oui
Langue
anglais
Résumé
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.
Mots-clé
Eccrine - Sebaceous - Amino acids - Lipids - Fatty acids - Squalene - Oxidation - Ozonolysis - Donor variation - Deposition - Environment - Fingerprints
Création de la notice
14/04/2021 21:44
Dernière modification de la notice
25/08/2021 6:37
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