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Spectrophotometric Determination of Ir(III) with Leucine in Alkaline Medium

[ Vol. 8 , Issue. 4 ]

Author(s):

Shakunj Rajput * and Anjali Goel   Pages 303 - 308 ( 6 )

Abstract:


Background: A kinetic spectrophotometric method based on Ir (III) catalyzed the oxidation of leucine by hexacyanoferrate (III) in the aqueous alkaline medium has been developed for 0.99 µgcm-3 to 19.98 µgcm-3 determination of Ir(III).

Method: Molar absorptivity (1.05×103 to 1.50×103 Lmol-1cm-1), Sandell’s sensitivity (0.183 to 0.128 µgcm-3), correlation coefficient (-0.9872 to 0.9957) and effect of selected interferences have been worked out for developing the calibration curves in terms of absorbance or initial rate or pseudo-first-order rate constant vs. Ir(III) plot.

Conclusion: The method is simpler, more sensitive with improved detection limits in comparison to other reported methods and is useful in absence of expected interferants.

Keywords:

Hexacyanoferrate, iridium, leucine, oxidation, superconductor, corrosion.

Affiliation:

Department of Chemistry, Pt. L.M.S. Govt. P.G. College, Rishikesh, Dehradun, Uttarakhand, Department of Chemistry, Kanya Gurukul Campus, Gurukul Kangri Vishwavidyalaya, Haridwar

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