Hosseinpour Khanmiri Mohammad, Bogdanov Roman V
Radiochemistry Department, Saint-Petersburg State University, 199034 Saint-Petersburg, Russia.
Radiochemistry Department, Saint-Petersburg State University, 199034 Saint-Petersburg, Russia.
Appl Radiat Isot. 2018 Mar;133:57-60. doi: 10.1016/j.apradiso.2017.12.018. Epub 2017 Dec 20.
The necessity of measuring the radioactivity of the Тh nuclide arises when attempting to solve a number of geochemical or geochronological problems based on the effects of radioactive disequilibrium in the U series. It is the authors' opinion that the use of the traditional α- and β-emitters of thorium as a radiotracer in order to determine the activity of Тh leads to various inconveniences and difficulties of a technical nature. The authors recommend using the Тh isotope contained in the study sample as the simplest and most natural way of measuring the chemical yield of the targeted nuclide (Тh). A sequence of radio-analytical procedures is proposed that will provide a correct assessment of the radioactivity of Тh. In addition, a specific example and an evaluation of the accuracy of the proposed methodology are presented, using actual experimental data.
当试图基于铀系放射性不平衡效应解决一些地球化学或地质年代学问题时，就产生了测量钍核素放射性的必要性。作者认为，使用传统的钍α和β发射体作为放射性示踪剂来测定钍的活度会导致各种技术性质的不便和困难。作者建议使用研究样品中所含的钍同位素，作为测量目标核素（钍）化学产率的最简单、最自然的方法。本文提出了一系列放射性分析程序，以正确评估钍的放射性。此外，还给出了一个具体实例，并利用实际实验数据对所提方法的准确性进行了评估。
