Speciation of Transition Metals in Aqueous Solutions and Melts

热液和岩浆系统中过渡金属的物理和化学行为在很大程度上取决于它们的形态（结构和组成）。在热液系统中，金属形态的研究对于彻底了解热液矿床的运输和沉积过程是必要的。在熔体系统中，金属形态与熔体结构密切相关，因此与控制输送和结晶等过程的岩浆的物理和化学性质密切相关。为了提高我们对热液和岩浆系统中这一过程的理解，将对水溶液中选定的过渡金属进行光谱研究，研究其与pH值、离子强度和温度的关系，以及硅酸盐熔体中过渡金属与温度和总体成分的关系。

The physical and chemical behavior of transition metals in hydrothermal and magma systems depends in a significant way on their speciation (structure and composition). In hydrothermal systems, the study of metal speciation is necessary for a thorough understanding of the transport and deposition processes responsible for hydrothermal ore deposits. In melt systems, metal speciation is intimately related to melt structure and, therefore, to the physical and chemical properties of magmas which control processes such as transport and crystallization. To improve our understanding of such processes in hydrothermal and magma systems, spectroscopic studies will be carried out of selected transition metals in aqueous solutions as a function of pH, ionic strength, and temperature and in silicate melts as a function of temperature and bulk composition.