铼—锇同位素分析中试样化学预处理方法进展

Progress in Chemical Separation and Purification for Re and Os Isotopic Analyses

摘要: 评述了用于Re-Os同位素体系分析的化学前处理技术的发展。简要介绍了卡洛斯管熔样法、Os的CCl4提取、溴提取和微蒸馏方法。卡洛斯管封闭熔样方法，有效地防止了Os的挥发损失和保证了Os同位素平衡，是一种很有发展前景的熔样方法。蒸馏法仍是分离和纯化Os的有效方法，溶剂（CCl4)提取和溴提取法在许多实验室里应用，而微蒸馏则是Os的二次纯化的主要方法。Re的化学分离和纯化仍是离子交换和萃取法。引用主要文献29篇。

Abstract: The development of chemical procedures for the precise determination of Re Os isotopic compositions is reviewed. The Carius tube digestion, solvent extraction of Os by CCl 4, selective extraction of Os by liquid bromine, and micro distillation were bri