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Dual-wavelength dual-indicator catalytic kinetic spectrophotometry for determination of trace Ru(III)

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Abstract

A new dual-wavelength dual-indicator catalytic kinetic spectrophotometric method for the determination of trace Ru(III) was studied. This method was based on Ru(III)-catalyzing oxidation of Arsenazo I and indigo carmine by potassium bromate in sulfuric acid. The absorbances of the catalytic and noncatalytic systems were measured at 510 and 610 nm, respectively. Under the optimum conditions, the linear range of determination is 0–0.12 μg·ml−1 and the detection limit is 1.21 × 10−4 μg·ml−1. The method was applied for the determination of trace Ru(III) in ore samples with satisfactory results.

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Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (No. 51273172).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China

    Hai-Yan Chen & Ming Zhang

  2. Department of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou, 225127, China

    Hai-Yan Chen

  3. School of Chemistry and Materials Science, Ludong University, Yantai, 264025, China

    Yu-Jing Chen

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  1. Hai-Yan Chen
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  2. Yu-Jing Chen
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  3. Ming Zhang
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Correspondence to Ming Zhang.

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Chen, HY., Chen, YJ. & Zhang, M. Dual-wavelength dual-indicator catalytic kinetic spectrophotometry for determination of trace Ru(III). Rare Met. 32, 605–608 (2013). https://doi.org/10.1007/s12598-013-0198-7

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  • DOI: https://doi.org/10.1007/s12598-013-0198-7

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