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TBP辐照体系中强络合辐解产物的研究

INVESTIGATION ON THE COMPLEXING RADIOLYSIS PRODUCTS IN γ-IRRADIATED TBP

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【作者】 朱建华; 张钰华; 魏根拴; 吴季兰;

【Author】 ZHU JIANHUA ZHANG YUHUA WEI GENSHUAN WU JILAN (Technical Physics Department, Peking University)

【机构】 北京大学技术物理系; 北京大学技术物理系;

【摘要】 本文研究了纯TBP体系的γ辐解产物谱,分离出了某一分子量较高的强络合酸性磷酸酯,测定了它的一系列性质,并给出了可能的结构式。研究了强络合酸性磷酸酯的形成机理,证实了它的形成与实际体系中存在的DBP有关。研究还表明强络合酸性磷酸酯的形成至少有三个途径:1)直接由TEP~≠或TBP~*形成,2)由DBP~*与TBP聚合而成,3)体系中存在烷烃时,由DBP自由基与R·自由基重合组成。

【Abstract】 This paper introduces a brief review for the research survey over twenty years about complexing radiolysis products formed in TBP-paraffine system. The spectrum of γ-radiolysis products in pure TBP system has been investigated. It is proved that the complexing radiolysis products which are difficult to wash out by alkaline solution are also formed in pure TBP system under γ-irradiation. They have been isolated with a usual chemical method and possess some properties similar to that obtained from practical system. The structural analysis indicates that they are a kind of acid organophosphate with high molecular weight, probable structure beingThe concentration of complexing agent is about 10-3 M when TBP absorbed a dose of 3×107 fads. The study shows that the formation of complexing agent is related to the DBP in the irradiated system and that there are three ways to form complexing agent at least: 1) form excited TBP(?) or TBP* directly, 2) polymerization between DBP(?) and TBP, 3) the DBP, radical recombines with R·redical to form complexing agent if there is alkane in the system. The kinetic analysis has been made.

  • 【文献出处】 核科学与工程 ,Chinese Journal of Nuclear Science and Engineering , 编辑部邮箱 ,1982年04期
  • 【被引频次】3
  • 【下载频次】65
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