高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (5): 526-528.

• 研究简报 • 上一篇    下一篇

碱土金属与多卤代偶氮氯膦类试剂显色反应的研究

赵也平1, 任英1, 余席茂2   

  1. 1. 中国科学院长春应用化学研究所;
    2. 武汉大学化学系
  • 收稿日期:1988-11-14 出版日期:1990-05-24 发布日期:1990-05-24
  • 通讯作者: 任英
  • 基金资助:

    国家自然科学基金

Studies on the Colour-Producing Reactions of Alkaline Earth Metals with Polyhalogcnated Bisazo Derivatives of Chromotropic Acid Containing-PO3H2

Zhao Yeping1, Ren Ying1, Yu Ximao2   

  1. 1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun;
    2. Department of Chemistry, Wuhan University, Wuhan
  • Received:1988-11-14 Online:1990-05-24 Published:1990-05-24

摘要: 近年来合成的多卤代偶氮氯膦类试剂有希望成为一类有效的碱土金属显色剂[1~3]。本文研究了此类试剂与钙、锶、钡所生成配合物的吸收光谱、显色酸度、选择性、灵敏度和配合物的组成,以及试剂结构与性能的关系等。说明了不同取代助色基对显色反应各方面的影响。

关键词: 碱土金属, 多卤代偶氮氯膦, 显色反应

Abstract: The title reagents can form colour complexes with alkaline earth metal. In this paper, the absorption spectrum, the optimum ranges of acidity, the sensitivity and selectivity for the colour reactions of these reagents with alkaline earth metal as well as the composition of complexes were studied. Both Chlorophosphouazo-TB and Chlorophosphouazo-DBC are excellent Chromogenic reagents in the spectrophotametuc determination of strontium, barium and calcium.

Key words: Alkaline earth metal, Polyhalogenated chlorophosphonazo, Colour reaction