The using SH, NH-active 1,2,4-triazoles as ligands for instrumental detection of heavy metals in environment

Abstract

We have synthesized two the most effective triazole–containing ligands (structure I, II) for selective & sensetive determination of such heavy metals, as: Hg, Pb, Cd, Cu, Zn, Bi, Cr, and Ni, which is based on spectrophotometric measurement of metal-ligand-(dye-stuff) ionic associate. The ionic associates were prepared in simple mixing of probe with the organic solvent solutions of chelating agent and dye-stuff with next extraction with toluene. The sensetivity of metal detection for the proposed methods is (0.5-1.2)•105 L mol-1•sm-1; that is why they can be successfully used for metal determination in environment.