potentiometric studies on the interaction of environmentally hazard zinc (II)‎, cadmium (II)‎ and lead (II)‎ ions with nitrilotriacetic acid and some tetrazoles

الملخص EN

-The interaction of Zn(II), Cd(II) and Pb(II) ions with nitrilotriacetic acid (NTA) as a primary ligand, 5-aminotetrazole, 1-H tetrazole and 5-mercapto-1-methyletetrazole, 1,10-phenanthroline and 2,2’-bipyridyl as secondary ligands has been studied in aqueous medium at room temperature.

The formation constants for all metal complexes were evaluated using potentiometric titration data.

The stability constants were found to depend markedly on the basicity as well as the steric effect of the ligands.