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A simple, rapid and sensitive spectrophotometric method has been developed for the determination of Ru(III) by using 2-( 5Bromo -2-Oxoindolin-3-ylidene)Hydrazine Carbothioamide or HBITSC as an analytical reagent HBITSC has been synthesized and characterized by elemental and spectral analysis. HBITSC extracts Ru(III) quantitatively (99.52 %) into n-amyl alcohol from an aqueous solution of pH range 3.5-5.7 and in the presence of 3cm3 of acetate buffer (pH 4.6) and 3 cm3 of 1M LiCl. The n-amyl alcohol extract shows an intense peak at 505nm (λ max).Beer’s law is obeyed over the Ru(III) concentration range of 1.0-8.0 μg/cm3 The Sandell’s sensitivity and molar absorptivity for Ru-HBITSC system is 10.25 ngcm-2 and 9855.95L mole-1cm-1 respectively. The composition of extracted species is found to be 1:3 [Ru: HBITSC ] by Job’s Continuous Variation and Mole Ratio Method. Interference by various ions has been studied. The proposed method is rapid, sensitive, reproducible and has been successfully applied for determination of Ru(III) in alloy sample.

international journal of science and research

Extractive Spectrophotometric Determination of Ruthenium (III) Using 2-(5- Bromo-2-Oxoindolin-3-Ylidene) Hydrazine Carbothioamide as an Analytical Reagent