Surface Chemistry and Reactivity of Metastable Iron SulfidesUnder Anoxic Marine Conditions

缺氧海洋条件下亚稳态硫化铁的表面化学和反应活性

• 批准号: 9115175
• 负责人: John Morse
• 金额: $ 32万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-12-01 至 1996-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115175&HistoricalAwards=false
• 关键词: Surface; Chemistry; Reactivity; Metastable; Iron

Research on the factors controlling the formation and abundance of sulfide minerals, and associated trace metal behavior, in a variety of modern and ancient environments has established that many trace metals are extensively pyritized during early diagenesis. Additionally, studies have defined the interaction of metals with the surface of pyrite and the coprecipitation of metals with mackinawite. The primary objectives of this research are 1) to experimentally resolve the perplexing problem of how framboidal pyrite forms and 2) to study the coprecipitation of trace metals with this phase. A variety of techniques will be used to attack this problem that include long-term gel growth methods, and use of both "synthetic" and natural sediments.

在各种现代和古老的环境中，对控制硫化物矿物质形成和丰度的因素以及相关的痕量金属行为的研究已经确定，许多痕量金属在早期成岩作用过程中被广泛泛化。 此外，研究定义了金属与黄铁矿表面的相互作用以及金属与麦基诺岩的共沉淀。 这项研究的主要目的是1）实验解决了如何形成炸仅的炸药的困惑问题，以及2）研究痕量金属与此阶段的共沉淀。 各种技术将用于攻击包括长期凝胶生长方法以及使用“合成”和天然沉积物的问题。