亮绿SF-过氧化氢体系催化动力学光度法测定痕量钒

收稿日期: 2008-11-01

修回日期: 2009-01-24

刊出日期: 2009-08-28

Determination of Trace Vanadium by Catalytic Kinetic Spectrophotometry in Light Green SF-hydrogen Peroxide System

Received Date: 01 November 2008

Revised Date: 24 January 2009

Publish Date: 28 August 2009

摘要: 在硫酸介质中，痕量钒（Ⅴ）能明显催化过氧化氢氧化亮绿SF褪色，通过研究该反应的最佳实验条件和动力学参数，建立了测定痕量钒的新催化动力学光度法。该方法选择性强、操作简便、快速，其线性范围为0.0～40 ng/mL，检出限为5.2 ng/L。方法用于水样及茶叶中痕量钒（Ⅴ）的测定，结果满意。
- 亮绿SF； /
- 过氧化氢； /
- 催化动力学光度法； /
- 钒
Abstract: Based on the catalytic effect of vanadium on the discoloring reaction of light green SF oxidized by H2O2in medium of sulfuric acid, a new method for the determination of vanadium(Ⅴ) was proposed. The optimum determination condition and kinetic parameters have been investigated. The detection limit is 5.2 ng/L with linear range of 0.0～40 ng/mL for vanadium(Ⅴ). The method has been applied to the determination of trace vanadium in water and tea samples with satisfactory results.
- light /
- green /
- SF /