研究了稀土元素Ｌａ~（３＋）、Ｇｄ~（３＋）、Ｙｂ~（３＋）、Ｌｕ~（３＋）、Ｙ~（３＋）及Ｓｃ~（３＋）对Ｅｕ－２－（２－二苯乙酰基）－１，３－茚二酮－阳离子表面活性剂体系的荧光增强效应，结果表明，在上述增强离子存在下，体系的荧光强度分别增加１０、１３０、３０、５０、５２和２０倍，利用标准加入法测定了混合稀土氧化物中的铕，铕浓度在１．０×１０~（－１０）～６．０×１０~（－７）ｍｏｌ／Ｌ范围内与荧光强度呈线性关系，最低检出限为６．０×１０~（－１２）ｍｏｌ／Ｌ。 The effects of rare earth elements La ~ (3 +), Gd ~ (3 +), Yb ~ (3 +), Lu ~ (3 +), Y ~ (3+) and Sc ~ (3+) The results showed that the fluorescence intensity of the system increased by 10, 130, 30, 50, 52 and 20 times respectively in the presence of the above mentioned enhanced ions, The europium in mixed rare earth oxides was determined by standard addition method. The concentration of europium showed a linear relationship with the fluorescence intensity in the range of 1.0 × 10 -10 ~ 6.0 × 10 -7 mol / L, The lowest detection limit was 6.0 × 10 ~ (-12) mol / L.