论文部分内容阅读
目前常用的铀测量方法有激光荧光法、ICP-MS法、分光光度法、γ谱法、滴定法等,前三种方法一般是测定低含量样品,后两种方法测定高含量样品较为准确,但是由于铀镭不平衡会影响γ谱法对铀测定的准确性,本方法将铀的核性质与化学性质结合起来,用化学手段将钻探样品中的铀分离纯化,然后用α测量仪直接测量铀的α射线,就可以对各种基体中的铀进行准确测定。铀的测定范围较宽,可以测量从10μg/g～1.5%左右的样品。
At present, the uranium measurement methods commonly used are laser fluorescence spectrometry, ICP-MS method, spectrophotometry, gamma spectrometry, titration, etc. The first three methods are generally for the determination of low-level samples, the latter two methods for the determination of high-level samples are more accurate, However, uranium radium imbalance will affect the determination of uranium gamma spectrometry accuracy, the method of uranium nuclear properties and chemical properties combined with the chemical means to separate the uranium drilling sample separation and purification, and then measured directly with the α measuring instrument Uranium α rays, uranium in a variety of substrates can be accurately measured. Uranium measurement range is wide, can measure from 10μg / g ~ 1.5% of the sample.