| 1AW溶液中U、Np和Pu的分析 |
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| 引用本文： | 邓惟勤,谈树苹,陶苗苗,吴继宗,龚焱平,陈强.1AW溶液中U、Np和Pu的分析[J].核化学与放射化学,2015,37(3):153-159. |
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| 作者姓名： | 邓惟勤 谈树苹 陶苗苗 吴继宗 龚焱平 陈强 |
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| 作者单位： | 1.中国原子能科学研究院 放射化学研究所，北京102413; 2.中核四零四有限公司，甘肃 嘉峪关735100 |
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| 摘 要： | 研究了H2O2同时调节镎、钚、铀价态至Np(Ⅳ)、Pu(Ⅳ)以及U(Ⅵ)的条件,在6mol/L HNO3浓度下,使用1.5%H2O2作为氧化还原剂对1AW进行调价,吸附上UTEVA柱并淋洗后,对钚、镎和铀进行洗脱。对模拟放射性样品进行预处理后,其中铀、镎、钚单独顺序洗脱的回收率分别为91.5%、119%、99.8%,137 Cs的去污因子高达7.4×104,单个样品操作时间约为1~1.5h;若钚洗脱后铀、镎同时洗脱并使用ED-XRF测量可以减少操作时间,铀、镎的回收率分别为102.4%、93.9%。均满足样品分析及辐射防护要求。
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| 关 键 词： | UTEVA H2O2 1AW |
Analysis of U,Np and Pu in 1AW Solution |
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| DENG Wei-qin
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TAN Shu-ping
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TAO Miao-miao
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WU Ji-zong
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GONG Yan-ping
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CHEN Qiang.Analysis of U,Np and Pu in 1AW Solution[J].Journal of Nuclear and Radiochemistry,2015,37(3):153-159. |
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| Authors: | DENG Wei-qin TAN Shu-ping TAO Miao-miao WU Ji-zong GONG Yan-ping CHEN Qiang |
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| Affiliation: | 1.China Institute of Atomic Energy, P. O. Box 275(88), Beijing 102413, China; 2.404 Company Limited, China National Nuclear Corpornation, Jiayuguan 735100, China |
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| Abstract: | The condition of adjusting Np, Pu, U valence to Np(Ⅳ), Pu(Ⅳ) and U(Ⅵ) by H2O2 has been studied, and 1.5% H2O2 is used to adjust the valency of Np, Pu, U in 6 mol/L HNO3, after loading and washing. The yields of Pu, Np, U are 99.8%, 119%, 91.5% when they are stripped independently, the decontamination factor of 137Cs is 7.4×104. The operation time will be 1-1.5 h for one sample. If ED-XRF is involved to analyze Np and U, this two elements could be stripped together. The yields of U, Np are 102.4%, 93.9%. The results meet the request of analysis and radiation protection for 1AW sample. |
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| Keywords: | UTEVA H 2 O2 1AW |
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