Kinetic Spectrophotometric Determination of Ruthenium by its Catalytic Effect on the Reduction of Spadns with Sodium Hypophosphite in Micellar Media

Zhi Rong Zhou; Li Zhen Zhang

doi:10.4028/www.scientific.net/AMM.204-208.4067

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Kinetic Spectrophotometric Determination of...

Kinetic Spectrophotometric Determination of Ruthenium by its Catalytic Effect on the Reduction of Spadns with Sodium Hypophosphite in Micellar Media

Abstract:

A simple kinetic spectrophotometric method was developed for the determination of trace amounts of Ru (III). The method is based on the reduction of spadns by sodium hypophosphite (NaH2PO2) in micellar media. The reaction was monitored spectrophotometrically by measuring the decrease in the absorbance of spadns at 515 nm with a fixed-time method. The decrease in the absorbance of spadns is proportional to the concentration of Ru (III) in the range 0.40–10.0 μg/L with a fixed time of 2.5–7.0 min from the initiation of the reaction. The limit of detection is 0.12 μg/L Ru (III). The relative standard deviation for the determination of 0.10 and 0.20 μg/25mL Ru (III) was 2.3 % and 2.0 %, respectively. The method was applied to the determination of Ru (III) in some ores and metallurgy products.

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Periodical:

Applied Mechanics and Materials (Volumes 204-208)

Pages:

4067-4070

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.204-208.4067

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Online since:

October 2012

Authors:

Zhi Rong Zhou, Li Zhen Zhang

Keywords:

Catalytic Spectrophotometriy, Micellar Media, Ruthenium (III), Sodium Hypophosphite, Spadns

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