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矿石中常有铀钍伴生的情况,因此在精炼的天然铀产品中常含有微量钍。这样制成的生产堆燃料元件辐照时,铀-232俘获中子而转变为镤-233,这会使经后处理得到的铀钚产品中γ放射性过高。为此,应对前处理中得到的精炼铀产品中的钍含量加以检验和控制。此外,Thorex流程中的铀-233液流和最终铀产品中也必定含有微量钍,须进行检测。因此,建立一个简便可靠的方法来分析大量铀中的微量钍,就具有实际的意义。本文采用简
Uranium and thorium often associated with the ore, so refined natural uranium products often contain trace amounts of thorium. When such a production reactor fuel element is irradiated, uranium-232 traps neutrons and turns into 镤-233, which causes γ radioactivity in the post-processed uranium-plutonium products to be excessively high. To this end, the thorium content of the refined uranium products obtained during the pretreatment should be tested and controlled. In addition, traces of thorium must also be present in the Thorex process for uranium-233 fluid and final uranium products to be tested. Therefore, to establish a simple and reliable method to analyze trace amounts of thorium in uranium is of practical significance. This article uses Jane