Study about complex formed between lanthanium (III)‎ and organic reagent 2-[(4-bromo)‎ phenyl azo]-4, 5-diphenyl imidazole

الملخص EN

The research include spectrophotometric method for determination Lanthanum (III) by use organic reagent -2 [(-4 bromo phenyl) azo] - 4, 5 diphenyl imidazole, pH (10) was favorable for complication reaction to with stoichiometry 1: 3 (metal : ligand) and maximum absorbance at lmax 508 nm and molar absorptivity 6 x 104 L.mol-1.cm-1.

Calibration curves of this complex were constructed.

Beers law was obeyed in the range (0.2 – 0.8) ppm, this complex identified by using F.T.I.R and UV-Vis Techniques, best conditions for the determination of this ion were employed, such as volume of reagent solution, period of time, temperature degree.

The precision and accuracy of the analytical procedure showed that (Erel, Re , R.S.D ) % were found to be (-1.23, 98.7, 0.12 ) % respectively , finely the interferences of some ions were studied.