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Analysis of Ballpoint Pen Inks by Diffuse Reflectance Infrared Spectrometry

41 citations0/0 files storedJournal of Forensic Sciences

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Cultural Heritage Materials Analysis Spectroscopy Techniques in Biomedical and Chemical Research Forensic Fingerprint Detection Methods

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Abstract The primary method for the analysis of inks is thin-layer chromatography (TLC), which only permits comparison of dye components. Studies have been done on the usefulness of diffuse reflectance (DR) with Fourier transform infrared (FT-IR) spectrometry, using a direct deposit sampling technique for the analysis of ballpoint pen inks. This technique allows screening of a composite ink as a whole, including its dye components, resins, and other additives. A total of 184 ink samples were analyzed by FT-IR, and searchable spectral libraries were created of both whole and extracted inks. The results indicate that the additional information provided by the DR analysis, combined with the complementary information from the TLC analysis, provides enhanced value to the forensic examination of inks.

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2021Forensic analytical approaches to the dating of documents: An overview 1996Microreflectance FTIR Techniques Applied to Materials Encountered in Forensic Examination of Documents 1995A Microspectrophotometric Method for Dating Ballpoint Inks—A Feasibility Study 2002A Survey of Methods Used for the Identification and Characterization of Inks 2018A study into the ageing and dating of blue ball tip inks on paper using in situ visible spectroscopy with chemometrics 2014Application of Micro‐Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy to Ink Examination in Signatures Written with Ballpoint Pen on Questioned Documents 2018Identification of dye content in colored BIC ballpoint pen inks by Raman spectroscopy and surface‐enhanced Raman scattering 2002Use of Synchrotron Reflectance Infrared Spectromicroscopy as a Rapid, Direct, Nondestructive Method for the Study of Inks on Paper

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