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稀土—联吡啶和苦味酸混合体系中萃取稀土元素。不同的稀释剂对萃合物组成有影响。N503在不同稀释剂中萃合物的组成也会有变化,在相同浓度下N503—pic~-—Ln~(3+)体系中萃取稀土元素的萃取率大小顺序为:CH_3NO_3>CH_2Cl_2>CHCl_3>CCl_4
Rare earth - bipyridyl and picric acid mixed system extraction of rare earth elements. Different diluents have an impact on the composition of the extract. The composition of the extractives of N503 in different diluents will also change. The order of the extraction rates of rare earth elements in N503-pic ~ - Ln ~ (3 +) system is as follows: CH_3NO_3> CH_2Cl_2> CHCl_3> CCl_4