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Ink dating methods

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Ink Dating is done in two primary forms. The first ink dating method is the static approach, which determines when the ink being examined was manufactured. The second ink dating method is the dynamic approach, this method is to determine when the writing occurred, or in simple terms, how long the ink has been on the paper. The ink dating static approach is typically more useful as the difference between the date on the document and the present time increases. Several different tests exist in this form of ink dating. These ink dating methods include the comparison of the examined ink to a known library of standards, commonly called the library approach, the detection of chemical date tags placed in the ink purposefully by the manufacturer, commonly called the date tag method, and also the determination of the type of ink writing instrument used.

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Two main approaches can be used for determining the age of an ink: indirect dating and direct dating.

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Indirect dating is based on the chemical analysis of an ink followed by comparison with known samples in a reference collection. The collection should contain information about the inks including the market introduction dates. This approach may allow for an anachronism to be detected. The second concept is based on measuring ink components that change with age.

Combination of a green and a traditional method for estimating relative and absolute ink age: a case study of ballpoint pen ink dating in vietnam

The analysis of solvents in ballpoint inks may be a useful parameter for determining the age of ink on paper. In a study, the authors demonstrated that thermal desorption of ink directly from paper, followed by chemical analysis using gas chromatography-mass spectrometry GC-MSis a promising procedure for characterizing ink-binder resins and solvents. Preliminary tests showed that monitoring the evaporation of ink solvent from ink on paper is not a suitable method for ink dating.

Thermal analysis of ink on paper in two steps revealed that fresh ink releases a relative amount of solvent at a certain low temperature in a defined period of time, which decreases as the ink ages.

As a consequence, this relative amount of solvent released at a certain low temperature, and its decrease with time, can be used to estimate ink age. This age-dependent parameter was studied in 85 different inks ranging in age from 1 week to 1. It was found that some inks showed a ificant decrease of this parameter up to an age of several months, and that the aging process can be monitored within this period.

Green analytical methods and nanomaterials for sample preparation

For other inks, however, the age-dependent parameter decreases relatively fast, e. Based on thesea general procedure for assessing the age of ballpoint pen inks on paper was developed. Please enable it to take advantage of the complete set of features! Clipboard, Search History, and several other advanced features are temporarily unavailable. Search: Search.

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Similar articles Characterization of ballpoint pen inks by thermal and desorption and gas chromatography-mass spectrometry. J Forensic Sci. PMID: Dynamic of the ageing of ballpoint pen inks: quantification of phenoxyethanol by GC-MS. Lociciro S, et al. Sci Justice. Weyermann C, et al. Forensic Sci Int. Epub Aug 9. Tebbett IR. Forensic Sci Rev. PMID: Review. Chromatographic and electrophoretic approaches in ink analysis. Zlotnick JA, et al. See all similar articles.

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Relative ink age comparison tests – ink dating

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