HBT MPDTP-TBP协同萃取示踪量镅和铕的研究
STUDY ON SYNERGISTIC EXTRACTION OF Am AND Eu FROM NaNO_3 SOLUTION WITH HBTMPDTP-TBP
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摘要: 进行了HBTMPDTP TBP/煤油从 1 0mol/LNaNO3 介质中协同萃取分离示踪量Am(Ⅲ )和Eu(Ⅲ )的研究。考察了TBP浓度和平衡水相 pH值对Am(Ⅲ )和Eu(Ⅲ )分配比的影响。研究结果表明 ,当 pH >2 5时 ,分离因数 β(Am/Eu)大于 2 0 0 ,能够满足分离Am(Ⅲ )和Eu(Ⅲ )的要求。Abstract: The synergistic extraction of tracer amount of Am(Ⅲ) and Eu(Ⅲ) from nitrate medium with purified Cyanex 301(HBTMPDTP) and TBP in kerosene is studied.The distribution ratios of Am(Ⅲ) and Eu(Ⅲ) vary with TBP concentration in organic phase and pH value in aqueous phase.While pH>2.5,the separation coefficient is more than 200 which is large enough for the separation of Am(Ⅲ) from Eu(Ⅲ).
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