利用通常的显色反应,对混合稀土中单一组分进行测定是十分困难的。溶液中镧系配合物 f-f 跃迁光谱的研究,为考查单一稀土离子的性质提供了可靠的信息,属于超灵敏跃迁的吸收峰对于每个稀土离子来说互不重叠,且可以用此峰去表征单一稀土离子。若对此吸收峰求导数,则可用于混合稀土中单一稀土元素的测定,因为这是 f 电子所具有的特征峰,故干扰甚少。近期,我们曾对镧系-β-二酮-吡啶衍生 It is very difficult to measure a single component in a mixed rare earth by the usual color reaction. Studies of the ff transition spectra of lanthanide complexes in solution provide reliable information for examining the properties of a single rare earth ion. The absorption peaks belonging to the hyper-sensitive transition do not overlap for each rare earth ion and can be characterized using this peak Single rare earth ions. If this absorption peak derivative, it can be used for the determination of a single rare earth elements mixed rare earth, because this is the characteristic peak f electrons, so little interference. Recently, we have derived lanthanide-β-diketone-pyridine