A method for the determination of twelve rare earth impurities in the co-precipitates of cerium-gadolinium-terbium oxide by ICP-AES has been developed.

• 建立了电感耦合等离子发射光谱法(ICP-AES)测定高纯氧化铈钆铽共沉淀物中12种稀土杂质的分析方法。