三氯偶氮胂与锆络合反应及锆的分光光度测定

Photometric Determination of Zr with Trichloroarsenazo

应用三氯偶氮胂为显色剂测定稀土,文献上已有刊载。但用三氯偶氮胂光度法测定锆目前尚未见报导。本文试验了三氯偶氮胂与锆显色反应的条件和性质,以及在光度分析中应用的可能性。

Zirconium forms a purple complex with trichloroarsenazo in 0.45-0.96N HC1,ε=5.1×10^(4).A new spectrophotometric method of Zr was developed on the basis of the reaction.Zr and light rare earths can be separated by ion exchange and determined satisfactorily by the same reagent.The method is simple and rapid.