Title :

Has your ancient stamp been regummed with synthetic glue? A FT-NIR and FT-Raman study

Author(s) :

Simonetti, R. [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Oliveri, P. [Auteur correspondant]
Henry, A. [Auteur]
Laboratoire de Génie civil et Géo-environnement [LGCgE]
Duponchel, Ludovic [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Lanteri, S. [Auteur]

Journal title :

Talanta

Pages :

250 - 256

Publisher :

Elsevier

Publication date :

2016

ISSN :

0039-9140

English keyword(s) :

Stamp gum
Philately
NIR spectroscopy
Raman spectroscopy
Principal component analysis (PCA)
Data fusion

HAL domain(s) :

Chimie/Chimie théorique et/ou physique

English abstract : [en]

The potential of FT-NIR and FT-Raman spectroscopies to characterise the gum applied on the backside of ancient stamps was investigated for the first time. This represents a very critical issue for the collectors' market, ...
Show more >The potential of FT-NIR and FT-Raman spectroscopies to characterise the gum applied on the backside of ancient stamps was investigated for the first time. This represents a very critical issue for the collectors' market, since gum conditions heavily influence stamp quotations, and fraudulent application of synthetic gum onto damaged stamp backsides to increase their desirability is a well-documented practice. Spectral data were processed by exploratory pattern recognition tools. In particular, application of principal component analysis (PCA) revealed that both of the spectroscopic techniques provide information useful to characterise stamp gum. Examination of PCA loadings and their chemical interpretation confirmed the robustness of the outcomes. Fusion of FT-NIR and FT-Raman spectral data was performed, following both a low-level and a mid-level procedure. The results were critically compared with those obtained separately for the two spectroscopic techniques.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Laboratoire Génie Civil et géo-Environnement (LGCgE) - ULR 4515

Source :

Harvested from HAL