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稀土金属具有优异的性能,在我国资源又极为丰富。近两年来,应用发展得很快,在钢铁和其他金属材料中,已收到了显著的技术经济效果,相随的黑色金属中总稀土的分析,也有了较快的进展,出现了一些既快速又准确的化学分析方法。由合成偶氮胂Ⅲ和相继不断的改进和应用以后,国内已广泛使用,由于其选择性和灵敏度均胜过偶氮胂Ⅰ,故对快速测定总稀土创造了条件。对于铁和稀土的分离,方法众多,有铜铁试剂——氯仿
Rare earth metals with excellent performance, in our country is extremely rich in resources. In the past two years, the application has developed rapidly. In steel and other metal materials, significant technical and economic effects have been received. The analysis of total rare earths in ferrous metals accompanying the rapid progress has also shown some rapid progress And accurate chemical analysis. From the synthesis of arsenazo Ⅲ and the continuous improvement and application later, it has been widely used in China, because of its selectivity and sensitivity than arsenazo Ⅰ, so the rapid determination of total rare earth to create the conditions. For the separation of iron and rare earth, there are many ways, with copper and iron reagent - chloroform