稀土-氨基J酸偶氮氯膦-氯代十四烷基吡啶-乙醇多元络合物的研究及分析应用

高等学校化学学报 ›› 1983, Vol. 4 ›› Issue (5): 553.

稀土-氨基J酸偶氮氯膦-氯代十四烷基吡啶-乙醇多元络合物的研究及分析应用

黎心懿, 陈震华, 曾云鹗

武汉大学化学系

收稿日期:1982-02-15 出版日期:1983-10-24 发布日期:1983-10-24

STUDIES ON COLOR REACTIONS OF THE POLYCOMPONENT COMPLEXES IN THE SYSTEM OF RARE EARTH ELEMENTS——AMINO-J ACID CHLOROPHOSPHONAZO-TPC-C₂H₅OH AND ITS APPLICATION IN ANALYTICAL CHEMISTRY

Li Xinyi, Chen Zhenhua, Zeng Yun'e

Department of Chemistry, Wuhan University, Wuhan

Received:1982-02-15 Online:1983-10-24 Published:1983-10-24

摘要/Abstract

摘要： 本文研究了氨基-J酸偶氮氯膦在阳离子表面活性剂存在下与稀土元素形成多元络合物的显色反应,并进行了实样分析。

Abstract: Color reactions of rare earths with high sensitivity and selectivity based on the formation of polycomponent complexes in the system of RE-amino-J acid chlorophosphonazo-TPC-C₂H₅OH have been investigated. In acid medium (0.1-0.3N HCl) in the presence of cationic surface-active agent TPC and ethyl alcohol, amino-J acid chlorophospho-nazo with rare earths reacts to form blue colored complexes.The maximum absorption of the complex of cerium was observed at 695nm. The molor absorptivity of the complex of cerium was 2.01×10⁵ 1^-1. mol-1. cm^-1. Under the same condition, heavier rare earths do not convert to corresponding complexes. The color remains stable for 1 hr. Beer's law is obeyed over the range 0-12 μg/25ml Ce. Many cations and ani-ons do not interfere. The method has been applied to the determination of RE in steel and the results of determination are found to be satisfactory.

TrendMD:

黎心懿, 陈震华, 曾云鹗. 稀土-氨基J酸偶氮氯膦-氯代十四烷基吡啶-乙醇多元络合物的研究及分析应用. 高等学校化学学报, 1983, 4(5): 553.

Li Xinyi, Chen Zhenhua, Zeng Yun'e . STUDIES ON COLOR REACTIONS OF THE POLYCOMPONENT COMPLEXES IN THE SYSTEM OF RARE EARTH ELEMENTS——AMINO-J ACID CHLOROPHOSPHONAZO-TPC-C₂H₅OH AND ITS APPLICATION IN ANALYTICAL CHEMISTRY. Chem. J. Chinese Universities, 1983, 4(5): 553.