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采用8-羟基喹林/氯仿对高纯La_2O_3进行化学分离富集。将大量基体La分离掉.非稀土杂质元素被富集后进行火花源质谱法测定。测定下限ppb级,测定元素达20多种.相对标准偏差在5～25%之间。
Highly purified La_2O_3 was separated and enriched by 8-hydroxyquinoline / chloroform. A large number of matrix La separation.Non-rare earth impurities were enriched after spark mass spectrometry. Determination of the lower ppb level, the determination of elements of more than 20. Relative standard deviation of 5 to 25%.