(Received 8 September 1992; accepted 24 March 1993)
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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.
Senior Research Chemist, Forensic Science Center, Ministry of the Interior, Moscow,
Stock #: JFS13516J