研究了铕(Ⅲ)-TTA(邻-A噻吩甲酰三氟丙酮)体系在有机溶剂和邻菲啰啉衍生物存在下的荧光性质,发现醇类有机溶剂能使Eu(Ⅲ)-TTA体系荧光强度大幅度提高;三种邻菲啰啉衍生物中,4,7-二苯基-2,9-二甲基-1,10-邻菲啰啉的加入也能提高体系灵敏度,优化了反应条件,并用此法研究了小麦根施Eu~(3+)数天后,Eu~(3+)在根和叶片细胞膜和细胞内的分布定位,为稀土元素的植物代谢研究提供了一种重要的辅助研究手段. The fluorescence properties of europium (Ⅲ) -TTA (o-A-butanamide trifluoroacetone) system in the presence of organic solvents and phenanthroline derivatives were investigated. It was found that the alcoholic organic solvents can make Eu (Ⅲ) -TTA system Fluorescence intensity is greatly improved. The addition of 4,7-diphenyl-2,9-dimethyl-1,10-phenanthroline to the three kinds of phenanthroline derivatives can also improve the sensitivity of the system and optimize Reaction conditions were studied. The distribution of Eu 3+ in the cell membrane and cell of roots and leaves after Eu 3+ was applied for several days in wheat, which provided important information for plant metabolism of rare earth elements Auxiliary research tools.