二苯基二硫代膦酸对镅和稀土元素萃取行为的研究

THE EXTRACTION OF Am AND Ln(Ⅲ) WITH DIPHENYLDITHIOPHOSPHINIC ACID

摘要: 研究了二苯基二硫代膦酸 (DPDTPI) /二甲苯溶液在HClO4 NaClO4 体系中对镅和 13种稀土元素的萃取行为 ,测定了各元素的分配比。结果表明 ,DPDTPI对镅和其它 13种稀土元素的萃取能力较弱 ,但镅与铕的分离因数达到 4 4。

Abstract: The extraction behavior of americium(Ⅲ) and lanthanides(Ⅲ) from NaClO 4 aqueous solutions by diphenyldithiophosphinic acid(DPDTPI) dissolved in xylene is investigated. The distribution ratios of americium(Ⅲ) and lanthanides(Ⅲ) are low, but the separation factor between americium and europium is found to 4.4.