Estimation of iron (iii) in industrial effluents

Solvent extraction of Iron (III) from aqueous ortho phosphoric and perchloric acid solutions by Tri-benzyl amine (TBA) in chloroform has been studied. Effect of several variables like concentration of the extractant, metal ion, acidity, foreign ions etc. were studied on the extraction. The extractions are nearly quantitative from both the acid solutions employed in the study. Based on the results obtained, the probable extracted species are also suggested. The results were compared with the estimation of iron using other reagents. Attempts were made to apply the method successfully for the estimation of iron in alloys and industrial effluents.