Spectrophotometric Micro Determination of Ceric Ion using 2, 6 – diamino toluene

. 2 6 - (0.5 ) 500 103x4.04 . -1.-1. 0.500 .-2. 1.267-0.558% %0.215-0.086. . .A simple, rapid and sensitive spectrophotometric method has been developed for the determination of ceric ion in aqueous solution. The method is based on the reaction of ceric ion with 2, 6- diamino toluene as reagent in acidic solution (0.5 M Sulphuric acid) forming an intense violet colour water soluble and has maximum absorption at 500 nm. The molar absorptivity was 4.04 x 103 l.mol-1.cm-1 Sandell sensitivities 0.0500. g. cm-2., relative error of 1.267-0.558% and relative standard deviation of 0.215-0.086%.The optimum conditions and the interference of foreign organic compounds have been investigated. The proposed method does not require temperature control or solvent extraction step.