高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (4): 454.

• 论文 • 上一篇    下一篇

光化学-荧光分析法研究(Ⅱ)--水中Cr(Ⅵ)的光化学-荧光动力学分析法测定

郭祥群, 许金钩, 沈崑   

  1. 厦门大学化学系, 361005
  • 收稿日期:1989-12-29 出版日期:1991-04-24 发布日期:1991-04-24
  • 通讯作者: 郭祥群
  • 基金资助:

    福建省自然科学基金

Studies on the Photochemical-Fluorimetric Method (Ⅱ)--Detarmination of Trace Chromium (Ⅵ) in Water by Using Catalytic-Kinetic Photochemical Fluorimetry

Guo Xiang-qun, Xu Jin-gou, Shen Kun   

  1. Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1989-12-29 Online:1991-04-24 Published:1991-04-24

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被引次数

16

摘要： 根据Cr(Ⅵ)对利凡诺(R)光氧化反应的催化作用。提出了Cr(Ⅵ)的光化学荧光催化动力学分析新方法。该法灵敏度高、选择性较好,Cr(Ⅵ)含量在1～200ng/mL呈良好的线性关系。直接测定池塘水和污水中Cr(Ⅵ)效果良好。对该反应机制进行了初步探讨,确立了反应动力学方程。

关键词: 铬(Ⅵ)测定, 光化学荧光法, 动力学

Abstract: Anew catalytic-kinetic photochemical fluorimetry for the determination of Cr(Ⅵ) in water is discrtibed. The method is based on the catalytic effect of Cr(Ⅵ) on the photo-oxidation reaction of Rivanol. Abetter linear relationship curve was obtained over the range of 1-200 ng/mL Cr(Ⅵ) and the relative standard deviation of the determination was 2. 3. This method has been applied to the direct determination of trace amounts of Cr(Ⅵ) in water with a good result. The mechanism for the photo-oxidation reaction of Rivanol catalyzed by Cr(Ⅵ) was discussed and a kinetic equation was given.

Key words: Determination of chromium(Ⅵ), Photochemical fluorimetry, Kinetic

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