Characterizing Actinide Transport and Speciation Using Nuclear Magnetic Resonance Tracer Techniques

摘要

There is a general lack of understanding of how actinides migrate in environmental systems. This lack of understanding stems from the fact that there is limited experience with many actinides in the environment, and due to the complex chemical reactivity of most actinide species. With a limited understanding of actinide environmental behavior, it is very difficult to predict and model environmental transport, which is necessary to determine the release of actinides to the biosphere from current and proposed radioactive waste disposal sites. To overcome the shortfall in the knowledge base of actinide environmental behavior, it is necessary to develop new tools and to take new approaches in increasing the awareness of actinide transport and chemical speciation. It is with this challenge that the application of nuclear magnetic resonance imaging (NMRI) to study actinide transport and speciation was employed.