铀矿石浓缩物的核法证学地理溯源研究现状

自20世纪90年代初开展核法证研究以来的近30年中，核法证学在分析方法、数据处理、溯源等方面都取得了重大进展，确定了铀同位素、稀土元素（REE）分布模式，Sr和Nd同位素丰度、部分杂质元素含量等可作为有效的地理溯源特征指纹信息。铀矿石浓缩物（UOC）地理溯源需结合地球化学知识寻找特征指纹信息，结合多元统计等数据处理技术对未知UOC样品的产地信息进行溯源。基于近年来的研究成果，本文对UOC的核法证地理溯源进行了详细论述，包括地理溯源特征属性分类、铀矿冶工艺对特征属性的影响、溯源案例等，以推动UOC核法证地理溯源领域的研究。

Review of Geological Traceability of Uranium Ore Concentrate in Nuclear Forensics

In the nearly three decades since nuclear forensic research was carried out in the early 1990s, nuclear forensics made significant progress in analytical methods, data processing, and traceability. Sr and Nd isotope abundances, the element content of some impurities, etc. can be used as effective geographic traceability fingerprint information. The geological traceability of uranium ore concentrates (UOC) needs to be combined with geochemical knowledge to find characteristic fingerprint information and combined with data processing techniques such as multivariate statistics to trace the origin of unknown UOC samples. Based on recent research results, a detailed discussion was made in this paper on the geological traceability of UOC nuclear forensics, including the classification of geographical traceability characteristics, the influence of uranium mining and smelting process on characteristics and traceability cases, etc., to promote the geological traceability study in UOC nuclear forensics.