Statistical discrimination of black gel pen inks analysed by laser desorption/ionization mass spectrometry

Détails

Ressource 1Télécharger: BIB_7E7A606A2ECD.P001.pdf (795.57 [Ko])
Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_7E7A606A2ECD
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Statistical discrimination of black gel pen inks analysed by laser desorption/ionization mass spectrometry
Périodique
Forensic Science International
Auteur(s)
Weyermann C., Bucher L., Majcherczyk P., Mazzella W., Roux C., Esseiva P.
ISSN
1872-6283 (Electronic)
ISSN-L
0379-0738
Statut éditorial
Publié
Date de publication
04/2012
Volume
217
Numéro
1-3
Pages
127-133
Langue
anglais
Notes
Original research paper
Résumé
Pearson correlation coefficients were applied for the objective comparison of 30 black gel pen inks analysed by laser desorption ionization mass spectrometry (LDI-MS). The mass spectra were obtained for ink lines directly on paper using positive and negative ion modes at several laser intensities. This methodology has the advantage of taking into account the reproducibility of the results as well as the variability between spectra of different pens. A differentiation threshold could thus be selected in order to avoid the risk of false differentiation. Combining results from positive and negative mode yielded a discriminating power up to 85%, which was better than the one obtained previously with other optical comparison methodologies. The technique also allowed discriminating between pens from the same brand.
Pubmed
Web of science
Open Access
Oui
Création de la notice
15/02/2012 16:26
Dernière modification de la notice
20/08/2019 14:39
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