国内外发表的有关铝合金中稀土元素光谱分析文献极少见到。由于稀土光谱较复杂,灵敏度又不高,而钢铁中稀土含量一般较少,因此难于用固体试样法直接进行光谱分析。为了提高光谱分析灵敏度,大都采用先对稀土试样进行化学分离及富集的处理,然后进行光谱分析微量稀土元素的方法。在化学分离方面,一般可归纳为:(1)以有机溶剂萃取去铁后,使稀土成草 Domestic and foreign published rare earth elements in the aluminum spectral analysis of rare literature. Due to the complex spectrum of rare earths, the sensitivity is not high, and the rare earth content of steel is generally less, so it is difficult to use the solid sample method for direct spectral analysis. In order to improve the sensitivity of spectral analysis, most of the rare earth samples are used for chemical separation and enrichment of the first treatment, and then spectral analysis of trace rare earth elements. In chemical separation, the general can be summarized as follows: (1) extraction of organic solvent to the iron, the rare earth grass