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随着稀土在原子能工业、冶金工业、石油化工和电子工业等方面应用的日益广泛,迫切要求找到一种快速、简便地测定各单一稀土,特别是相邻单一稀土元素的方法。由于各稀土元素的物理性质和化学性质极其相似,目前,一般的分光光度法还只能测定稀土总量和轻重稀土分量。由于性质相似元素的混合物与同一试剂的反应速率差别较大,因此速差动力学分析方法
With the increasing application of rare earth in atomic energy industry, metallurgical industry, petrochemical industry and electronic industry, it is urgent to find a rapid and simple method for the determination of each single rare earth, especially the adjacent single rare earth element. Due to the extremely similar physical and chemical properties of rare earth elements, at present, the general spectrophotometric method can only determine the total amount of rare earths and the light and heavy rare earth components. Due to the large difference between the reaction rates of the same kind of mixture and the same kind of reagent, the method of differential kinetic analysis