变色酸双偶氮稀土显色剂进展

Recent Development of Bi azo chromotropic Acids for Rare Earth Elements Determination

介绍１９９０年以来变色酸双偶氮显色剂在稀土分析中应用的进展，着重介绍了新出现的显色剂。

In this paper,the development of using bi azo chromotropic acids as chromogenic reagents in RE determination was reviewed,especially the new reagents introduced after 1990.