Surface Chemistry and Reactivity of Metastable Iron Sulfides under Anoxic Marine Conditions

这个项目是一个硫化铁化学的研究 矿物及其分布的控制因素， 天然沉积物的组成。 的主要重点 建议的研究是关于过渡和阶级的相互作用 “B”金属与铁硫化物矿物，并建立在最近 结果 镁钠石反应动力学实验研究， 并且非Fe金属与该相的共沉淀将是 承诺提供有关金属行为的信息， 硫化物环境 几个重要的分布 “反应”、溶解和黄铁矿相中的“痕量”金属将被 研究了各种硫化物沉积物，以确定 控制这些金属转移到 黄铁矿 这些研究将通过“罐子”实验得到补充 放射性示踪剂。

This project is a study of the chemistry of iron sulfide minerals, and the factors controlling their distributions and composition in natural sediments. The primary focus of the proposed research is on the interaction of transition and class "B" metals with iron sulfide minerals, and builds on recent results. Experimental research on mackinawite reaction kinetics, and the coprecipitation of non-Fe metals with this phase will be undertaken to provide information relevant to metal behavior in sulfidic environments. The distribution of several important "trace" metals in "reactive", dissolved and pyrite phases will be studied in a variety of sulfidic sediments to determine the primary factors controlling the transfer of these metals into pyrite. These studies will be augmented by "jar" experiments with radiotracers.