Dual-wavelength dual-indicator catalytic kinetic spectrophotometry for determination of trace Ru（Ⅲ）
来源期刊：Rare Metals2013年第6期
论文作者：Hai-Yan Chen Yu-Jing Chen Ming Zhang
文章页码：605 - 608
摘 要：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 and610 nm,respectively.Under the optimum conditions,the linear range of determination is 0–0.12 lgáml-1and the detection limit is 1.21 9 10-4lgáml-1.The method was applied for the determination of trace Ru（III）in ore samples with satisfactory results.
摘要：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 and610 nm,respectively.Under the optimum conditions,the linear range of determination is 0–0.12 lgáml-1and the detection limit is 1.21 9 10-4lgáml-1.The method was applied for the determination of trace Ru（III）in ore samples with satisfactory results.
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