Jump to main content
Jump to site search

Issue 23, 2016
Previous Article Next Article

Detection of signature forgery with erasable pens using paper spray mass spectrometry (PS-MS)

Author affiliations

Abstract

Paper spray mass spectrometry (PS-MS) is applied to a fast, sensitive and reproducible detection of forgery in signatures made with erasable pens that use a chemical method to remove inks (other than the usual physical methods). A forgery process was simulated by signing over a previously erased signature and triangular sections were cut out of the paper in order to perform the PS-MS analysis. No sample preparation was required as the analysis was conducted directly on the triangular paper by simply wetting it with methanol and applying high voltage. Analysis of the original, erased and forged signatures was made following the same procedure. The results show that the original and the forged signatures were promptly distinguished by their mass spectrometry profiles (fingerprints). Hence, the appearance of diagnostic ions (of m/z 172 and m/z 321) in the mass spectrum of the counterfeit signature can be used to quickly and reliably characterize this novel and potentially harmful type of forgery.

Graphical abstract: Detection of signature forgery with erasable pens using paper spray mass spectrometry (PS-MS)

Back to tab navigation

Publication details

The article was received on 18 Feb 2016, accepted on 25 Apr 2016 and first published on 26 Apr 2016


Article type: Paper
DOI: 10.1039/C6AY00487C
Citation: Anal. Methods, 2016,8, 4543-4546

  •   Request permissions

    Detection of signature forgery with erasable pens using paper spray mass spectrometry (PS-MS)

    M. Jurisch and R. Augusti, Anal. Methods, 2016, 8, 4543
    DOI: 10.1039/C6AY00487C

Search articles by author

Spotlight

Advertisements