Document Type

Article

Publication Date

7-2006

Journal or Book Title

Journal of Forensic Sciences

Volume

51

Issue

4

First Page

915

Last Page

918

DOI

10.1111/j.1556-4029.2006.00162.x

Abstract

Writing ink analysis is used in establishing document authenticity and the sources and relative ages of written entries. Most analytical methods require removing samples or visibly altering the document. Nondestructive, in situ analysis of writing inks on paper without visible alteration is possible using mass spectrometry with a new ion source called Direct Analysis in Real Time. Forty-three different black and blue ballpoint, black fluid, and black gel inks were examined. Both dyes and persistent but thermally labile components of the inks contribute to the mass spectra, principally as protonated molecules [M1H]1. Numerous ink components were identified from the spectra. The spectra were placed in a searchable library, which was then challenged with two spectra from each of the 43 inks. The best match for each of the challenge spectra was correct for all but one ink, which matched with a very similar ink by the same manufacturer.

Comments

This is the peer reviewed version of the following article: Journal of Forensic Science 54 (2006): 915, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/j.1556-4029.2006.00162.x. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving.

Copyright Owner

Roger W. Jones, et al

Language

en

File Format

application/pdf

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