用色散率不大的光谱仪测定矿石中稀土元素时,大量铈族稀土元素的存在,由于它们的强烈光谱对钇族稀土元素的测定带来谱线干扰和背景影响,有必要进行分组分离。有人研究了稀土元素在强碱性阴离子交换树脂上与硝酸-脂肪醇之间的离子交换行为,用适当浓度的上述混合溶液可以使钇、镥、镱、铥、铒、钬、镝、铽、钆、铕、钐与钕、镨、铈、镧相互分离。 When the rare earth elements in ore are determined by the spectrometer with little dispersion rate, the presence of a large number of rare earth elements in the cerium group is necessary because of the spectral interference and the background effect caused by the strong spectra of the rare earth elements. Some people have studied the rare earth elements in the strong base anion exchange resin with nitric acid - fatty alcohol ion exchange between the use of the appropriate concentration of the mixed solution can yttrium, 镥, ytterbium, 铥, erbium, holmium, dysprosium, terbium, Gadolinium, europium, samarium and neodymium, praseodymium, cerium, lanthanum are separated from each other.