Transfer of triazine-iron(II) chromic complexes left by iron items on textile background and human skin

The research is focused on the detection and transfer of iron traces left by iron items on clothing and human skin. The method is based on the formation of colored complexes between ferrous ions and five synthesized, mostly new triazines. Iron traces originally were left by iron rings on slightly wetted (artificial sweat) cotton fabrics and subsequently transferred to a separate textile substrate. Prior to the use of trazines the contact spots were treated with a new inorganic reducing agent (Sn(2+)) to reduce Fe(3+) to Fe(2+). The method is sensitive to detect iron traces on wetted canvas after 10 min contact with iron items. More spectacular results were obtained for traces left on human palm even after very short contact (10 sec). The new iron-trace-transfer method eliminated the contact of triazines solutions with human skin. Transmission visible spectra of Fe(II)-triazine complexes were determined.