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Jurisch M, Vendramini PH, Eberlin MN, et al. Detection of Handwriting Forgery Made with Erasable Pens Using Desorption Electrospray Mass Spectrometry Imaging. J Am Soc Mass Spectrom. 2020;31(4):1000-1003doi: 10.1021/jasms.0c00007.
Jurisch, M., Vendramini, P. H., Eberlin, M. N., & Augusti, R. (2020). Detection of Handwriting Forgery Made with Erasable Pens Using Desorption Electrospray Mass Spectrometry Imaging. Journal of the American Society for Mass Spectrometry, 31(4), 1000-1003. https://doi.org/10.1021/jasms.0c00007
Jurisch, M, et al. "Detection of Handwriting Forgery Made with Erasable Pens Using Desorption Electrospray Mass Spectrometry Imaging." Journal of the American Society for Mass Spectrometry vol. 31,4 (2020): 1000-1003. doi: https://doi.org/10.1021/jasms.0c00007
Jurisch M, Vendramini PH, Eberlin MN, Augusti R. Detection of Handwriting Forgery Made with Erasable Pens Using Desorption Electrospray Mass Spectrometry Imaging. J Am Soc Mass Spectrom. 2020 Apr 01;31(4):1000-1003. doi: 10.1021/jasms.0c00007. Epub 2020 Mar 18. PMID: 32167767.
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J Am Soc Mass Spectrom. 2020 Apr 01;31(4):1000-1003. doi: 10.1021/jasms.0c00007. Epub 2020 Mar 18.

Detection of Handwriting Forgery Made with Erasable Pens Using Desorption Electrospray Mass Spectrometry Imaging.

Journal of the American Society for Mass Spectrometry

M Jurisch, P H Vendramini, M N Eberlin, R Augusti

Affiliations

  1. Federal University of Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte/MG 31270-901, Brazil.
  2. ThoMSom Mass Spectrometry Laboratory, Institute of Chemistry, State University of Campinas, Campinas/SP, CP 13083-970, Brazil.
  3. MackMass Laboratory, School of Engineering, Mackenzie Presbyterian University, São Paulo/SP 01222-010 Brazil.

PMID: 32167767 DOI: 10.1021/jasms.0c00007

Abstract

Documents with handwritten portions are often susceptible to adulteration, forgery, and addition of entries, raising a problem of social concern. In this study, DESI ionization with imaging capabilities is applied to identify fraud in handwritten documents made using erasable pens of the chemical method of erasing (other than the usual physical methods). A fraud procedure was simulated in which an original entry made in white office paper was erased and replaced with a new one. The areas were directly analyzed using a DESI-MSI ion source coupled to a Q-Extractive mass spectrometer. Chemical images were obtained mapping the intensity of selected ions, spelling out each part of the fraud process as irrefutable evidence of its occurrence. Thus, the potential application of DESI-MSI in detecting fraud in suspect documents is demonstrated as a useful, simple, and fast alternative for the traditional techniques employed in these situations.

Keywords: desorption electrospray ionization mass spectrometry imaging; detection of fraud; erasable pens; handwriting documents

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