This article deals with ion exchange separation-EDTA complexometric determination of lanthanum in rare earth alloys, The optimal conditions of ion exchange separation and elution were given.

• 本文阐述了离子交换分离-edta络合滴定法测定稀土合金中镧的分析方法。试验选择了交换,分离,洗脱的最佳条件。