摘要
随着核能的开发及核医学诊断的发展,^(99)Tc的研究日益受到重视。^(99)Tc具有半衰期长、裂变产额高和迁移性强等特点,在核废物的地质处置、环境安全评价及生物效应方面倍受关注,准确测定环境土壤样品中^(99)Tc的含量显得至关重要。本文在文献调研的基础上较详细总结了Tc的化学性质,并对^(99)Tc分析流程中样品的预处理、化学分离纯化、制源及测量等过程中涉及的主要方法进行了综述,指出了现今分析方法中存在的主要瓶颈,并对环境样品中^(99)Tc的分析做了展望。
With the exploiting of nuclear energy and the development of nuclear medical diagnosis,the research of ^99Tc is becoming more and more important.Because of the long halflife,high fission yield,and high mobility,^99Tc has caused widely attention in disposing nuclear waste,environmental safety assessment and biological effect,consequently it is essential to determine the accurate concentration of ^99Tc in environmental soil samples.This article reviews the chemical properties of Tc and compares the developed analytical methods of ^99Tc in environmental samples.The procedures contain four steps：sample pre-treatment,chemical separation and purification,source preparation and ^99Tc measurement.The work illustrates the major bottlenecks of analytical methods reported and makes the prospect of ^99Tc analysis in the future.
出处
《核化学与放射化学》
CSCD
北大核心
2017年第5期321-335,共15页
Journal of Nuclear and Radiochemistry
基金
国家自然科学基金资助项目(No:21301083)
教育部博士点基金资助项目(No:20130211120032)
关键词
^99Tc
环境土壤样品
化学性质
分析流程
综述
^99Tc
environmental soil sample
chemistry properties
analytical procedures
review
