| 从~(237)Np中分离高纯度的~(233)Pa的新方法 |
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| 引用本文： | 郑爱榕,施文远,黄奕普.从~(237)Np中分离高纯度的~(233)Pa的新方法[J].原子能科学技术,1990(3). |
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| 作者姓名： | 郑爱榕 施文远 黄奕普 |
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| 作者单位： | 厦门大学海洋学系
(郑爱榕，施文远)，厦门大学海洋学系(黄奕普) |
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| 摘 要： | 一、引言~(231)Pa是AcU(~(235)U)天然放射系的一个重要成员。在海洋地球化学和地质年代学研究中,它是一个非常重要的核素。但可作为~(231)Pa分离用的产额示踪剂的核素只有~(233)Pa,它是β-γ发射体,半衰期短(27.0 d)。因此如果能够简便地制得示踪剂~(233)Pa,对~(231)Pa年代学的研究和应用以及对镤化学和放射化学的研究无疑是个促进。
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| 关 键 词： | ~(233)Pa ~(237)Np 分离 |
THE SEPARATION OF HIGH PURITY ~(233)Pa FROM ~(237)Np |
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| ZHENG AIRONG,SHI WENYUAN,HUANG YIPU.THE SEPARATION OF HIGH PURITY ~(233)Pa FROM ~(237)Np[J].Atomic Energy Science and Technology,1990(3). |
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| Authors: | ZHENG AIRONG SHI WENYUAN HUANG YIPU |
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| Affiliation: | ZHENG AIRONG,SHI WENYUAN,HUANG YIPU Department of Oceanography,Xiamen University |
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| Abstract: | A new method is presented for high purity ~(233)Pa separation from ~(237)Np usingTTA (2-thenoyltrifluoroacetone) as extractant. ~(233)Pa is extracted with an equalvolume of TTA in benzene from 8 mol/1 HNO_3 solution containing ~(237)Np, thenwashed the organic phase with 8 mol/1 HNO_3 three times. Subsequently, ~(233)Pa isreexacted into an equal volume of 1 mol/1 HNO_3-0.1 mol/1 HF from organicphase. The aqueous phase is washed by 0.5 mol/1 TTA in benzene. After all HFis removed by evaparation, and the residue was dissloved in 8 mol/1 HNO_3, theabove procedure is repeated once again. The purity of ~(233)Pa obtained by this method is high enough for study in geochronology of uranium series isotopes. |
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| Keywords: | ~(233)Pa ~(237)Np Separation |
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