稀土化合物中总α、总β放射性的测定  

Determination of total α and β radioactivity in rare earth compounds

作　　者：陈文 汤英 徐娜 李平 CHEN Wen;TANG Ying;XU Na;LI Ping(Jiangxi tungsten and rare earth products quality supervision and inspection center,Ganzhou 341000,China)

机构地区：[1]江西省钨与稀土产品质量监督检验中心,江西赣州341000

出　　处：《世界有色金属》2021年第1期187-188,共2页World Nonferrous Metals

摘　　要：放射性元素在稀土中含量的多少,是评价稀土化合物产品优劣的重要指标,然而我国目前还没有一个准确度测定稀土产品中放射性元素含量的方法,为解决无法确定稀土产品优劣的问题,对稀土化合物中总α、总β放射性的测定方法进行研究。在确定实验的仪器和试剂之后,首先进行α和β标准源的测量,然后进行本底和样品源的测量,最后根据公式得到计算结果。通过计算结果分析标准源的选择因素、有效饱和厚度的确定方法、仪器本底的稳定性分析、样品测量时间的计算以及实验的精密度分析。The content of radioactive elements in rare earth is an important index to evaluate the quality of rare earth compound products.However,there is no accurate method to determine the content of radioactive elements in rare earth products in China.In order to solve the problem that the quality of rare earth products can not be determined,the determination methods of total α and β radioactivity in rare earth compounds were studied.After determining the instrument and reagent of the experiment,first measure the standard source of α and β,then measure the background and sample source,and finally get the calculation result according to the formula.Through the calculation results,the selection factors of standard source,the determination method of effective saturation thickness,the stability analysis of instrument background,the calculation of sample measurement time and the precision analysis of experiment are analyzed.

关 键 词：稀土化合物 Α放射性 Β放射性 放射测定 

分 类 号：X832[环境科学与工程—环境工程]