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本文研究了采用N,N-二乙基氨基甲酰甲基膦酸二己酯(CMP)浸渍过的支撑液膜(SLM)迁移富集铕。铕充分地从高氯酸溶液被萃取到SLM中,但不能有效地解吸到稀酸溶液中。加入1-癸醇能改善解吸过程从而实现铕的定量迁移。应用由二异癸磷酸和CMP组合而成的双SLM体系,料液(0.1MHNO_3)中的铕可以通过中间液(1MHClO_4+4MNaClO_4)迁移到产品溶液(0.1MHNO_3)中,其浓缩因子约20。
In this paper, the support liquid film (SLM) impregnated with di-N, N-diethylcarbamoylmethylphosphonate (CMP) was studied to migrate and enrich europium. Eu is fully extracted from the perchloric acid solution into the SLM but can not be efficiently desorbed into the dilute acid solution. Addition of 1-decanol can improve the desorption process to achieve quantitative migration of europium. A dual SLM system consisting of diisodecyl phosphate and CMP was used. Europium in the feedstock (0.1MHNO_3) could migrate into the product solution (0.1MHNO_3) through the intermediate solution (1MHClO_4 + 4M NaClO_3) with a concentration factor of about 20.