Study of Ionic Interactions In Seawater

海水中离子相互作用的研究

• 批准号: 9617721
• 负责人: Frank Millero
• 金额: $ 38.2万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-03-01 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9617721&HistoricalAwards=false
• 关键词: Study; Ionic; Interactions; Seawater

9617721 Millero In recent years, chemical and biological oceanographers have come to realize that primary production in vast areas of the ocean far from land, once thought to be limited by the availability of inorganic nitrogen coming into surface waters, is in fact limited by iron. Now that further , more detailed studies of this exciting discovery are underway, there is a need for in-depth understanding of the molecular-level behavior of dissolved iron in seawater. This proposal is directed toward meeting this need. The principal investigator, a leading world authority on the physical chemistry of seawater, will carry out a series of laboratory studies to determine the fundamental chemical properties of iron in seawater. These investigations will include studies of iron solubility under various conditions and of the complexation behavior of iron - i.e., the ability of inorganic and organic substances in seawater to bind iron and thus affect its solubility and biological availability. Both the kinetic and thermodynamic (equilibrium) aspects of iron solution and complexation will be studied in the context of more general theoretical models of seawater chemistry. ***

9617721 Millero 近年来，化学和生物海洋学家逐渐认识到，远离陆地的广大海洋区域的初级生产一度被认为受到进入地表水的无机氮的限制，但事实上却受到铁的限制。 现在，对这一令人兴奋的发现的进一步、更详细的研究正在进行中，有必要深入了解海水中溶解铁的分子水平行为。 本提案旨在满足这一需求。 首席研究员是海水物理化学方面的世界领先权威，他将进行一系列实验室研究，以确定海水中铁的基本化学性质。 这些研究将包括研究不同条件下铁的溶解度以及铁的络合行为，即海水中无机和有机物质结合铁的能力，从而影响其溶解度和生物利用度。 铁溶液和络合的动力学和热力学（平衡）方面将在更一般的海水化学理论模型的背景下进行研究。 ***