Journal Published Online: 01 September 1993
Volume 38, Issue 5

Some New Ideas for Dating Ballpoint Inks—A Feasibility Study

CODEN: JFSCAS

Abstract

This paper introduces four techniques developed with the goal of estimating the age of ballpoint inks. These techniques are based on using the microspectrophotometric determination of the rates of color changing in inks as a result of the reaction with chemicals—the older the ink the less the rate (procedure 1); a combination of gas chromatographic (GC) and spectrophotometric methods for determining the masses' ratios “volatile component/dye component” in ink that decrease with the age of inks (procedure 2); a GC method of determining the extent of extraction of ink volatile components that decreases as ink ages on paper (procedure 3); a thin-layer chromatographic method for determining age changes in resins and other colorless nonvolatile ballpoint ink components: these changes are detected by observing the resulting thin-layer chromatograms under UV illumination and can be evaluated by using scanning densitometry (procedure 4). Suggestions for further work are proposed.

Author Information

Aginsky, VN
Forensic Science Center, Ministry of the Interior, Moscow, Russia
Pages: 17
Price: $25.00
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Details
Stock #: JFS13517J
ISSN: 0022-1198
DOI: 10.1520/JFS13517J