Dating paper age

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Sauzier curtin. 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 Dating paper age 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.

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Sauzier, J. McGann, Simon W. Lewis and W. Methods, 10DOI: This article is d under a Creative Commons Attribution 3. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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For Members. For Librarians. RSS Feeds. Chemistry World. Education in Chemistry. Open Access. Historical Collection. Issue 47, Article Next Article. From the journal: Analytical Methods. Lewis ab and Wilhelm van Bronswijk a. This article is Open Access. Please wait while we load your content Something went wrong. Try again? Cited by. Back to tab Download options Please wait Supplementary information PDF K. Download Citation. Request permissions. A study into the ageing and dating of blue ball tip inks on paper using in situ visible spectroscopy with chemometrics G.

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Dating paper age

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PAPER FORENSICS & AGE DATING