A NEW METHOD FOR THE DIRECT DETERMINATION OF Fe(II) AND Fe(III) FROM WATER SAMPLES THROUGH COMP.....

For the direct determination of Fe(II) and Fe(III) in water samples, a new, simple, accurate, and selective approach has been established. The approach is based on the complexation of ferrous and ferric ions with N,NI- ethylenebis (salicylideneimine) to form reddish brown and light green metal complexes, respectively. The molar absorptivity of the reddish brown Fe(II) complex is 4.24 x 104 Lmol-1cm-1, whereas the molar absorptivity of the light green Fe(III) complex is 3.45 x 104 Lmol-1cm-1. The limit of detection was determined to be 0.001 g/mL, whereas Sandell sensitivity was 0.011 g/mL. Calibration graphs were linear in the range of 0.1 – 20.0 g/mL. The liquid-liquid extraction method uses low-cost chemicals and has simple methods that may be employed in the field.

Please see the link :- https://www.ikprress.org/index.php/JACSI/article/view/2856