The detection limits of Ce, Lu by using LEI spectrometry method is lower than AAS (atomic absorption) in flame and ICP-AES. The lowest detection limit of Ce obstained in this work was 4ng/ml and the lowest detection limit of Lu was 8ng/ml.

• 用LEI光谱方法测量的稀土元素Ce、Lu的检测限优于在火焰中的原子吸收光谱方法和ICP-AES方法,Ce、Lu、的检测限分别为4ng/ml、8ng/ml。