Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 47, 2018
Previous Article Next Article

A study into the ageing and dating of blue ball tip inks on paper using in situ visible spectroscopy with chemometrics

Author affiliations

Abstract

This paper presents a study into the potential of visible spectroscopy with chemometrics as an approach to dating blue ball tip inks on paper documents. Analysis of six inks left under various conditions found that the majority of those kept in the dark could still be matched to the source pen after 32 months of ageing. Conversely, the majority of those exposed to light exhibited rapid spectral changes that continued throughout the 32 month period. Partial least squares regression (PLSR) was used to generate dating models for inks aged with exposure to light. Evaluation using an external test set found absolute dating to be challenging for these ink deposits within the first 2–6 months of ageing. However, predictive accuracy was found to improve for long-term ageing, with two-year old samples yielding age estimates with a maximum error of 6 months. This rapid, non-destructive methodology could assist document examiners in the relative ageing or approximate age determination of questioned documents, as well as the identification of document alterations.

Graphical abstract: A study into the ageing and dating of blue ball tip inks on paper using in situ visible spectroscopy with chemometrics

Back to tab navigation

Supplementary files

Article information


Submitted
27 Jun 2018
Accepted
22 Oct 2018
First published
23 Oct 2018

This article is Open Access

Anal. Methods, 2018,10, 5613-5621
Article type
Paper

A study into the ageing and dating of blue ball tip inks on paper using in situ visible spectroscopy with chemometrics

G. Sauzier, J. McGann, Simon W. Lewis and W. van Bronswijk, Anal. Methods, 2018, 10, 5613
DOI: 10.1039/C8AY01418C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements