Kinetic Spectrophotometric Determination of Tin by its Catalytic Effect on the Oxidation of Arsenazo M by Potassium Bromate

Cheng Jie Cai; Zhi Rong Zhou; Su Ping Chen; Yan Ling Fang

doi:10.4028/www.scientific.net/AMM.361-363.1075

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 361-363Kinetic Spectrophotometric Determination of Tin by...

Kinetic Spectrophotometric Determination of Tin by its Catalytic Effect on the Oxidation of Arsenazo M by Potassium Bromate

Abstract:

Based on the catalytic effect of trace tin on discoloring reaction of arsenazo M (AsA M) with potassium bromate in 0.08 mol/L sulphuric acid solution, a method for the determination of trace tin by kinetic spectrophotometry was studied. The results show that the maximum absorption of AsA M is at 540 nm and the detection limit of the method for tin is 0.22 μg/L. Beers law is obeyed for tin in the range of determination is 0.7210.0 μg/L. Combined with tributyl phosphate (TPB) chromatographic separation, the method has been applied to the determination of trace tin in rock samples with satisfactory results.

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Periodical:

Applied Mechanics and Materials (Volumes 361-363)

Pages:

1075-1078

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.361-363.1075

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Online since:

August 2013

Authors:

Cheng Jie Cai, Zhi Rong Zhou, Su Ping Chen, Yan Ling Fang

Keywords:

Arsenazo m, Kinetic Spectrophotometry, Potassium Bromate, TiN

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