Study on the Kinetic Analysis (Ⅲ)--KBrO3-V(Y)-Citric Acid-Bromophenol Blue System for Catalytic Spectrophotometric Determination of Trace Amount of Vanadium

Chem. J. Chinese Universities ›› 1989, Vol. 10 ›› Issue (3): 305.

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Study on the Kinetic Analysis (Ⅲ)--KBrO₃-V(Y)-Citric Acid-Bromophenol Blue System for Catalytic Spectrophotometric Determination of Trace Amount of Vanadium

Zhang Zhiqi, Xue Fenghe, Jiang Peixuan

Department of Chemistry, Shaanxi Normal University, Xian

Received:1987-07-05 Online:1989-03-24 Published:1989-03-24

Abstract

Abstract: A new catalytic spectrophotometric method has been developed for determination of trace amount of vanadium based on oxidation decoloration of bromophenol blue with potassium bromate in sulfuric acid (pH=2.2). Addition of citric acid could advance the sensitivity. The range of determination is 0.001 to 0.50μg/25mL vanadium (V). Combining with the separation technology of ionic exchange, the method was applied to determination of trace amount of vanadium in nature water.

Key words: Catalysis, Bromophenol blue, Decoloration, Activation, Spectropho-tometry

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Zhang Zhiqi, Xue Fenghe, Jiang Peixuan . Study on the Kinetic Analysis (Ⅲ)--KBrO₃-V(Y)-Citric Acid-Bromophenol Blue System for Catalytic Spectrophotometric Determination of Trace Amount of Vanadium[J]. Chem. J. Chinese Universities, 1989, 10(3): 305.

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Study on the Kinetic Analysis (Ⅲ)--KBrO₃-V(Y)-Citric Acid-Bromophenol Blue System for Catalytic Spectrophotometric Determination of Trace Amount of Vanadium

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