Spectrophotometric determination of micro amount of mercury (II) using an (Azo) derivative in the presence of surfactant

Abstract

Imidazole azo ligand (DPIDA), one of the azo compounds, was prepared and tested in the sample. In addition to the regular azoth protocol. Because of their ability to form stable complexes with metal ions in some oxidation states, imidazole azo ligands are important heterocyclic azo ligands in coordination chemistry. The complexation of the imidazole azo ligand (DPIDA) was accomplished by adding 4,5-diphenyl imidazole and N1, N1-dimethylbenzene1,4-diamine dihydrochloride. Measurements of 1HNMR, IR, UV-Vis, and molarity Their conductivity demonstrates their octahedral geometry with a bidentate ligand coordinated from an (N3) atom of the imidazole ring and one nitrogen atom of the azo group. The thesis also looked at using this reagent was used to do spectroscopy with the mercury (II) ion in binary water solution, and it was revealed that the reagent is difficult with the ion and has the highest sensitivity. The exact wavelength of absorption is (554) nm (pH = 6). Even though the pH was higher in the concentration range of (0.1 – 6.0 g /mL) with adherence to Beer's law, it was revealed to be a dynamic mercury pair reagent with the stability of more than (24 hours).