Synthesis, Structural Characterization and Spectrophotometric  Determination of Ruthenium (VI) in Presence of Micellar  Medium Using 4–Hydroxy–3, 5–Dimethoxy Benzaldehyde  4–Hydroxy Benzoylhydrazone

Dr.D.Gopala Krishna; Dr.GV Krishna Mohan

Volume : III, Issue : VII, July - 2013

Synthesis, Structural Characterization and Spectrophotometric Determination of Ruthenium (VI) in Presence of Micellar Medium Using 4–Hydroxy–3, 5–Dimethoxy Benzaldehyde 4–Hydroxy Benzoylhydrazone

Dr. D. Gopala Krishna, Dr. Gv Krishna Mohan

Abstract :

A rapid, simple, sensitive and selective Spectrophotometric method has been developed for the determination of Ruthenium (VI) using 4–Hydroxy 3, 5–dimethoxy benzaldehyde 4–hydroxy benzoylhydrazone (HDMBHBH). Ruthenium (VI) forms a light pink coluored water–soluble complex with HDMBHBH in presence of C–TAB (5%) and the complex shows maximum absorbance while the reagent blank shows negligible absorbance at lmax 420 nm and at pH 5.5. Beer’s law was obeyed in the range 0.202–2.022 mg/mL and the optimum concentration range from ringbom plot was 0.404–1.819 mg/mL of Ruthenium (VI). The molar absorptivity and Sandell’s sensitivity for the coloured solution were found to be 3.00x104 L mol–1cm–1 and 0.0033–µg.cm–2 respectively. The interference effect of various diverse ions has been studied. The complex shows 1:1 [Ru (VI): HDMBHBH] stoichiometry with stability constant 3.4x106 . The standard deviation of the method in the determination of 1.011–µg ml–1 of Ruthenium (VI) was 0.002. First and second order derivative spectophotometric methods were developed at lmax 440 nm and 460 nm respectively for the determination of Ruthenium (VI), which was more sensitive than the zero order method. The developed method has been used for the determination of Ruthenium (VI) in environmental water and alloy samples.