某钒厂石煤原矿样品中210Po的分析  

Analysis of 210Po in stone coal material from a vanadium extracting plant

作　　者：张燕齐[1] 潘竞舜[1] 潘自强 刘森林[1] 张一敏[3] 廖海涛[1] 蔡震雷 胡鹏程[3] 黄娟 ZHANG Yanqi;PAN Jingshun;PAN Ziqiang;LIU Senlin;ZHANG Yimin;LIAO Haitao;CAI Zhenlei;HU Pengcheng;HUANG Juan(China Institute of Atomic Energy,Beijing 102413 China;Science and Technology Committee,China National Nuclear Corporation;School of Resource and Environmental Engineering,Wuhan University of Science and Technology)

机构地区：[1]中国原子能科学研究院,北京102413 [2]中国核工业集团有限公司科学技术委员会 [3]武汉科技大学资源与环境工程学院

出　　处：《中国辐射卫生》2020年第1期61-64,共4页Chinese Journal of Radiological Health

摘　　要：目的建立石煤中210Po的分析方法,分析石煤中210Po的含量。方法针对某火法-湿法联合工艺钒厂原料车间的石煤原矿样品,采用湿式灰化、209Po标准溶液示踪、银片自制渡源的方法分析石煤样品中210Po含量。结果石煤原矿样品中210Po的平均含量为(359.5±7.6) Bq·kg-1,相对误差为2.1%,回收率为(60.0%±3.2%);测量48 h,样品中210Po的最小可探测限为1.8 Bq·kg-1。结论石煤中210Po含量较高,需关注火法-湿法联合工艺提钒生产中210Po的转移、富集和排放,以及相应的辐射环境影响问题。Objective It is to establish an analysis method and to analyze the activity concentration of 210 Po in stone coal.Method Stone coal ore samples were collected from a raw material workshop of a vanadium extracting plant in which vanadium is extracted from stone coal by a pyro-hydro process. Standard 209 Po was used as tracer, and the stone coal samples were wet-digested into acid and auto deposited on silver disks. Results The average activity concentration of 210 Po in stone coal samples was 359.5 ± 7.6 Bq·kg-1, with the 2.1% total relative error. The full recovery rate was 60.0% ± 3.2%. The detection limit of the method was 1.8 Bq·kg-1, while the measurement time was 48 h. Conclusion 210 Po activity concentration in stone coal is relatively high. Therefore, further studies are needed on the transfer, enrichment and emission of 210 Po, as well as the corresponding issue on radiological impacts, during vanadium extracting by the pyro-hydro process from stone coal.

关 键 词：石煤 钒页岩 提钒 210Po 火法-湿法联合工艺 

分 类 号：O615.1[理学—无机化学]