摘要
本文主要介绍了分离Sm-Nd的3种化学方法,其中有适合分离高含量Sm,Nd的了酮-疏氰酸铵纸色层法;适合分离一般含量Sm,Nd的P_(204)柱色层法;适合低含量Sm,Nd的加压离子交换法。同时介绍应用Sm-Nd法得出的我国第一条Sm-Nd等时线,测出了冀东早太古代岩石Sm-Nd同位素地质年龄。
This paper mainly describes three chemical methods for Sm-Nd separation: low chromatography of butamone-ammonium thiocyanate for high concentration Sm and Nd separation, P_(240) column chromatography for medium concentration Sm-Nd separation, and pressure ion exchange for low concentration Sm-Nd. The first Sm-Nd synchrone obtained in China with Sm-Nd methods is introduced and Sm-Nd isotopic geological dating in Early Archaean rocks in eastern Hebei has been determined.
出处
《铀矿地质》
CSCD
北大核心
1990年第1期54-58,共5页
Uranium Geology
关键词
同位素
地质年龄
化学法
钐钕
分离
Chemical method for Sm-Nd separation, Sm-Nd synchrone, Sm-Nd isotopic geological dating
