Suryanshi Biswas*
Background: When we talk about the age of documents, finding the age of ink on that document is the better option. Previously, many researches took place on various kind of inks and how to identify the age of that ink. It is called ink dating. Through this research we wanted to find out if we can perform ink dating with ultraviolet-visible spectroscopy as it is cheaper than any other instrumentation techniques and all the current techniques are not enough to accurately predict the age of the documents, they can only approximately predict the age of the document. Most have many limitations and most of the technique are destructive in nature. We need more research and development to find a technique which can reduce error rate as well as cost. Current technique can only measure the age to wide range like 1000 years old-10 years old but these technique fails if we try to find the age of document of 5 or less year old.
Result: In this research, we collected sample of ink of different age, written on same kind of paper with same ink brand. The pens are manufactured at same batch of ink. Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (FTIR-ATR) was performed on the sample to identify the component of the ink to find the maximum absorption of these components. The ink samples of different aged ink were examined through UV-Visible spectroscopy after the ink isolation by Solvent extraction method and when the samples were examined through UV-Vis Spectrophotometer, no direct relation was found between the results i.e., the readings of the spectrophotometer were random at two different wavelengths 500 nm and 600 nm.
Conclusion: After this experiment, we can conclude that it is not possible to estimate the age of the ink using only UV-Visible spectrophotometer.
PDFShare this article
Journal of Forensic Research received 2328 citations as per Google Scholar report
