Jump to main content
Jump to site search

Issue 4, 2010
Previous Article Next Article

Fingerprinting and aging of ink by easy ambient sonic-spray ionization mass spectrometry

Author affiliations

Abstract

Using easy ambient sonic-spray ionization mass spectrometry (EASI-MS), fast and non-destructive fingerprinting identification and aging of ballpoint pen ink writings have been performed directly from paper surfaces under ordinary ambient conditions. EASI-MS data obtained directly from the ink lines showed that pens from different brands provide typical ink chemical profiles. Accelerated ink aging has also been monitored by EASI-MS revealing contrasting degradation behaviors for six different common ink dyes. As demonstrated for Basic Violet 3, some dyes display a cascade of degradation products whose abundances increase linearly with time thus functioning as ‘chemical clocks’ for ink aging. Analysis of questionable documents has confirmed the ink aging capabilities of EASI-MS. The order of superimposition at a crossing point has also been determined by EASI-MS. For two superimposed ink lines, continuous EASI-MS analysis has also shown that the EASI spray is able to penetrate through the layers and therefore both ink layers could be characterized.

Graphical abstract: Fingerprinting and aging of ink by easy ambient sonic-spray ionization mass spectrometry

Back to tab navigation

Article information


Submitted
09 Nov 2009
Accepted
15 Jan 2010
First published
02 Feb 2010

Analyst, 2010,135, 745-750
Article type
Paper

Fingerprinting and aging of ink by easy ambient sonic-spray ionization mass spectrometry

P. M. Lalli, G. B. Sanvido, J. S. Garcia, R. Haddad, R. G. Cosso, D. R. J. Maia, J. J. Zacca, A. O. Maldaner and M. N. Eberlin, Analyst, 2010, 135, 745
DOI: 10.1039/B923398A

Social activity

Search articles by author

Spotlight

Advertisements