环境中^(237)Np的分析技术现状  

Analytical Technology Status of ^(237) Np in Environment

作　　者：杨垚 刘大前 罗茂益 张静[1] 邢闪 邬洋 原妮 戴雄新 YANG Yao;LIU Daqian;LUO Maoyi;ZHANG Jing;XING Shan;WU Yang;YUAN Ni;DAI Xiongxin(China Institute for Radiation Protection,Taiyuan 030006,China;Co-innovation Center for Radiation Medicine,Soochow University,Suzhou 215006,China)

机构地区：[1]中国辐射防护研究院,山西太原030006 [2]苏州大学放射医学协同创新中心,江苏苏州215006

出　　处：《原子能科学技术》2021年第10期1746-1758,共13页Atomic Energy Science and Technology

基　　金：国家自然科学基金(12005197);科技部基础性工作专项(2015FY110800)。

摘　　要：由于极长的半衰期、较高的环境迁移性及放射毒性,^(237)Np成为环境放射性核素危害评价和高放废物地质处置中重点关注的核素。本文细致调研了目前环境中^(237)Np的来源途径及其在各种环境介质中的活度浓度水平,并针对已报道的放射化学分析方法,着重介绍样品的消解、快速预浓集、分离纯化及测量技术的研究进展,指出目前环境中痕量^(237)Np准确分析的难点和瓶颈,展望其分析技术的最新发展方向及^(237)Np的应用前景。Due to the extremely long half-life,highly environmental mobility,and radioactive toxicity,^(237)Np is considered as one of the most concerned radionuclides in the environmental hazard assessment and nuclear waste repository research.The source of^(237)Np and its activity levels in the various of environmental medium were summarized at great length in this paper.Based on the developed radioanalytical method of^(237)Np,the digestion means of solid sample,the pre-treatment processes,radiochemical separation/purification steps and various measurement techniques were systematically reviewed.Meanwhile the primary difficulties and bottlenecks of obtaining reliable^(237)Np analysis results were highlighted,and the latest development direction of the analysis technology and application prospect were also prospected.

关 键 词：^(237)Np 活度浓度水平 放射化学分离方法 核素测量技术 

分 类 号：X132[环境科学与工程—环境科学]