Printed artificial sweat as replacement for natural fingermarks: Qualitative and quantitative approach considering an amino acid reagent.

Détails

ID Serval
serval:BIB_0BB7191BE84B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Printed artificial sweat as replacement for natural fingermarks: Qualitative and quantitative approach considering an amino acid reagent.
Périodique
Science & justice
Auteur(s)
Jeanneret Ambre, Anthonioz Alexandre, Bécue Andy
ISSN
1876-4452 (Electronic)
ISSN-L
1355-0306
Statut éditorial
Publié
Date de publication
05/2021
Peer-reviewed
Oui
Volume
61
Numéro
3
Pages
249-259
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
The study presented in this paper aims at assessing how printed fingermarks can be used to generate realistic latent marks bearing varying quantities of materials to be detected. Considering dilution series of artificial sweat (eccrine secretion) and 1,2-indanedione/zinc as amino acid reagent, we assessed how printed marks behave in comparison to natural fingermarks provided by a set of 30 donors. The results were assessed in terms of relative intensity (contrast, luminescence) and expert grading (ridge details, overall quality). With regards to the set of 30 donors, this study brought a quantitative look to the influence of intra- and inter-variability on the relative intensity values observed when processing natural fingermarks. This provided new data to further understand the concept of "donorship". With regards to the use of printed marks, it has been illustrated how dilution series of a concentrated solution allows covering a range of cases: unnatural marks (intensity values well above those obtained with donors), rich marks (corresponding to fingermarks left by good donors), and faint marks (associated with the kind of results observed with poor donors). Such a range of detection performance offers the possibility to generate fine-tuned detection exercises of varying difficulty levels. Printed items made of artificial sweat could hence constitute a valuable alternative to natural secretions in the context of education and proficiency testing.
Mots-clé
1,2-Indanedione, Chemical printer, Eccrine secretion, Fingerprint, Forensic science, Simulant
Pubmed
Web of science
Open Access
Oui
Création de la notice
05/07/2021 10:43
Dernière modification de la notice
10/07/2021 6:33
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