SGER: Novel Applications of Spectroscopy to the Study of Inorganic Rare Earth Element Complexes in Hydrothermal Solutions

9314824木材这个高风险项目的主要目标是测试和完善两个有前途的光谱技术用于热液研究的稀土络合物。 第一种技术涉及使用核磁共振光谱研究镧氯化物配合物使用139镧在一个范围内的浓度，温度和pH值。第二种技术涉及脉冲光声光谱研究钕和铒氯化物配合物在类似的条件下。 这些技术的成功开发将允许在热液中的高温金属络合物，特别是稀土配合物的表征的快速进步。 该技术将发现应用在稀土元素的流动性研究有关的放射性废物处理，岩石成因示踪剂，稀土资源的开发，和稀土元素的海洋预算。

9314824 Wood The principal objectives of this high-risk project are to test and refine two promising spectroscopic techniques for use in hydrothermal studies of REE complexes. The first technique involves use of nuclear magnetic resonance spectroscopy to study La chloride complexes using 139La over a range of concentrations, temperatures, and pH. The second technique involves pulsed photoacoustic spectroscopy to study Nd and Er chloride complexes under similar conditions. Successful development of these techniques will allow for rapid advances in characterization of high temperature metal complexes, especially REE complexes, in hydrothermal solutions. The techniques will find application in studies of REE mobility as relevant to radioactive waste disposal, petrogenetic tracers, development of REE resources, and the REE budget of the oceans.