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Original Articles

A Preliminary Report on the Nondestructive Examination of Ballpoint Pen Ink on Questioned Documents by FT-IR Spectroscopy

Pages 5-21 | Published online: 22 Nov 2013
 

ABSTRACT

The applicability of FT-IR microsampling techniques to the nondestructive analysis of ballpoint pen inks on questioned documents is discussed. Preliminary spectral results using conventional transmission FT-IR, micro-transmission/reflectance FT-IR, and diffuse reflectance infrared fourier transform (DRIFT) spectroscopy are presented. DRIFT spectroscopy may offer a viable, nondestructive method for the analysis of ballpoint pen inks on questioned documents.

RÉSUMÉ

Le présent article traite des techniques d'analyse de micro-échantillons d'encre de stylo à bille à l'aide de la spectroscopie à l'infrarouge avec transformation de Fourier (FT-IR). On y expose les résultats préliminaires de tests effectués à l'aide de la spectroscopie FT-IR par transmission, la spectroscopie FT-IR par micro-transmission/réflectance, et la spectroscopie FT-IR par réflectance diffuse (DRIFT). La spectroscopie DRIFT est une méthode non destructive et pourrait être appliquée à l'analyse des encres de stylo à bille sur les documents contestés.

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