许多有关稀土分析的著述,涉及反应的选择性,但专论选择性的很少,其实进行稀土分析时,不但要求排除非稀土元素的干扰,有时进一步要求排除稀土元素之间的干扰,对选择性要求比其它元素更严.近来稀土多元络合物研究进展迅速,从二元络合物反应发展成三元体系,在提高灵敏度方面作用显著,但选择性能否改善仍有不同看法.本文在总结前人工作的基础上认为:稀土多元络合物显色反应具有选择性优势,并且例举了利用稀土多元反应特点改善选择性 Many of the publications on rare earth analysis involve the selectivity of the reaction, but the monograph has few selectivities. In fact, the analysis of rare earths not only requires the elimination of non-rare earth elements, but sometimes further excludes the interference of rare earth elements, Sexual requirements more stringent than other elements.Recently, the rapid progress of the research on rare earth multi-complex, from the binary complex reaction into a ternary system, the role of significant increase in sensitivity, but the selectivity is still there to improve the different views.This paper Based on the previous work, it is concluded that the chromogenic reaction of the rare earth multi-complex has a selective advantage, and the use of rare earth multivariate reaction characteristics to improve the selectivity