摘要
钍是一种赋存在自然界中的天然放射性元素,在地壳中比铀更丰富,它广泛分布在各种不同的地质环境中,是重要的核能资源之一。对近10年来国内外钍分析中的分离富集方法进行了归纳总结,将这些分离富集方法划分为液-液萃取、固相萃取和液膜萃取3个方面。着重讨论了这些分离富集方法的应用范围、分离富集能力,并对它们的优缺点进行了比较,还对钍在分析测定前的预富集技术进行了展望。
Thorium is a natural radioactive element, which wildely exists in various geological conditions, the content of thorium is richer than that of uranium. In this paper, some separation and concentration techniques reported at home and abroad in recent decade are summarized. These techniques are sorted to three types, which is liquid-liquid extraction, solid phase extraction and liquid membrane extraction. The application range and the ability of separation and extraction are mainly discussed, and their advantages and disadvantages are also compared. The prospect of preconcentration technique before the analysis of thorium is proposed.
出处
《世界核地质科学》
CAS
2007年第2期108-118,共11页
World Nuclear Geoscience
关键词
钍
分离
富集
预富集
thorium
separation
concentration
preconcentration
作者简介
杨枝（1982-），女，天津人，东华理工大学分析化学专业在读硕士研究生。E-mail：mbluo@126．com．
