ISSN: 0022-1198
CODEN: JFSCA
Page Count: 3

Forensic Examination of “Slightly Soluble” Ink Pigments Using Thin-Layer Chromatography
Aginsky, VN
Senior Research Chemist, Forensic Science Center, Ministry of the Interior,

(Received 8 September 1992; accepted 24 March 1993)

Abstract

A three-step thin-layer chromatographic procedure for examining colored components of printing and writing inks and other marking materials is described. The procedure uses the original stage of separating phthalocyanine pigments and other “slightly soluble” organic pigments.

Experimental conditions are given.

Keywords:
questioned documents, printing inks, artists' paints, toners, counterfeits, phthalocyanines, organic pigments, dyes, thin-layer chromatography, dimethylformamide (DMF), chloroform, concentrated sulfuric acid

Paper ID: JFS13516J
DOI: 10.1520/JFS13516J
ASTM International is a member of CrossRef.