射气-闪烁法测定锰矿石中^226Ra的优化研究  

Optimization of Determination of ^226Ra in Manganese Ore by Scintillation Emanometry

作　　者：魏代东 刘环 王玉学 WEI Dai-dong;LIU Huan;WANG Yu-xue(No.240 Institute of Nuclear Industry,Liaoning Shenyang 110000,China)

机构地区：[1]核工业二四○研究所,辽宁沈阳110000

出　　处：《广州化工》2020年第17期62-63,共2页GuangZhou Chemical Industry

摘　　要：采用射气-闪烁法测定锰矿石中的镭-226。由于锰矿石中的锰含量和硅含量较高,当采用标准方法对锰矿石进行前处理时溶液中存在大量沉淀,无法进行后续测量。本实验对前处理条件进行了优化,结果表明:适当的增加碱量、酸量和增长熔样时间后溶液澄清,可以继续进行测量;利用标准样品确定了装置系数,并对样品和标样进行了检测。数据表明,本方法操作可行,合理可靠,可用来检测锰矿中的镭含量。The radiation-scintillation method was used to determine Ra-226 in manganese ores.Due to the high content of manganese and silicon in manganese ore,when the standard method is used to pretreat manganese ore,there is a large amount of precipitation in the solution,which can not be measured.In this experiment,the pretreatment conditions were optimized,and the results showed that the solution could be further measured after the solution was clarified by increasing the amount of alkali,acid and melting time;the device coefficient was determined by the standard samples,and the samples and standard samples were tested.The data show that this method is feasible,reasonable and reliable,and can be used to detect the content of radium in manganese ore.

关 键 词：射气-闪烁法 锰矿石 镭-226 装置系数 

分 类 号：P631.6[天文地球—地质矿产勘探]