高等学校化学学报

高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (8): 686.

• 研究论文 • 上一篇    下一篇

2-(2'-噻唑偶氮)-5-二甲基氨基酚与Fe(Ⅱ)的分光光度研究及其应用

冯建章, 张宝新   

  1. 北京大学化学系
  • 收稿日期:1984-05-28 出版日期:1985-08-24 发布日期:1985-08-24

The Spectrophotometric Study on TAM with Fe(Ⅱ) and Its Application

Feng Jianzhang, Zhang Baoxin   

  1. Department of Chemistry, Peking University, Beijing
  • Received:1984-05-28 Online:1985-08-24 Published:1985-08-24

PDF (PC)

被引次数

5

摘要： 本文研究了TAM与Fe(Ⅱ)的显色反应,测定了试剂的离解常数,确定了络合物的组成比为2:1,稳定常数β=1.04×1012。结果表明;TAM与Fe(Ⅱ)在pH6.0—9.5范围内形成紫红色络合物,在558nm、752nm处有两个吸收峰。以752nm为工作波长,可选择测定铁,方法简便,灵敏度比邻二氮菲法高3倍。

Abstract: The properties of 2-(2'-thia2olylazo)-5-dimethyIamino phenol(TAM) and its complex formation reaction with iron were studied. Asimple, sensitive and selective spectrophotometric method for the determination of the micro amounts of iron has been developed. The method has been applied successfully to the determination of iron in the biological and environmental samples,and excellent results were obtained.

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