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化学学报
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化学学报 ›› 1963, Vol. 29 ›› Issue (4): 288-290. 上一篇    下一篇

研究简报

砷偶氮Ⅲ用作鈦的分析试剂——Ⅰ.鈦(Ⅳ)的检定

徐鍾雋, 潘教麥   

  1. 华东师范大学化学系
  • 投稿日期:1962-07-25 修回日期:1963-01-20 发布日期:2013-06-03

USE OF ARSENAZO Ⅲ AS AN ANALYTICAL REAGENT FOR TITANIUM——Ⅰ. DETECTION OF TITANIUM(Ⅳ)

HSU CHUNG-GIN, PAN TSAO-MAI   

  1. Department of Chemistry, East China Normal University
  • Received:1962-07-25 Revised:1963-01-20 Published:2013-06-03

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砷偶氮Ⅲ与釱(Ⅳ)在硫酸溶液中形成紫色絡合物.此反应可用于舦的检定,其灵敏度較常用的过氧化氫法为高.检出限为0.25微克Ti,稀度限1:200,000.在检定釱的反应条件下,有多种离子干扰,其界限比均分別求出.如应用适当的隐蔽剂和(或)分离可避免其影响.

In this paper, the color reaction between titanium and Arsenazo Ⅲ is studied.The purple coloration formed in sulfuric acid medium may be used for detection of titanium (Ⅳ).The limit of identification and dilution limit are found to be 0.25 μg Ti and 1:200,000 respectively.Many ions interfere with the reaction.Their limiting proportions has been found experimentally.The interference caused by foreign ions can be easily eliminated by masking and/or by simple separations.