Study of Ionic Interactions In Seawater

米雷罗9400784这个项目将继续研究离子相互作用如何影响海水和其他自然水域的过程。在接下来的两年里，将致力于研究离子相互作用如何影响海水中金属和非金属的氧化和还原速度。这些速率将在海水中作为pH、盐度、温度和组成的函数进行测量，以阐明海水中离子成分的影响。将对反应的产物和中间体进行研究(如有可能)，以试图阐明这些反应的机理。在今后两年内，还计划继续对海水中氧化铁(II)氧化硫化氢的情况进行测量。测量将作为pH、温度和盐度的函数进行。将测量H_2S的消失率和Fe(II)的出现。还计划确定产物S、SO32-和S2O32-受pH、温度和盐度的影响。还将开始研究在天然水中用硫化氢还原Fe(III)和用O2在纳米水平上氧化Fe(II)。对碳酸盐体系和海水中Fe(II)和Fe(III)的状态进行了新的热力学模拟。这些研究有望产生一套一致的稳定常数和Pitzer相互作用参数，可用于表征自然水域中的这些系统。

MILLERO 9400784 This project will continue the study of how ionic interactions affect processes in seawater and other natural waters. In the next two years efforts will be directed at how ionic interactions affect the rates of oxidation and reduction of metals and nonmetals in seawater. Measurements of the rates will be made in seawater as a function of pH, salinity, temperature and composition to elucidate the effect of the ionic components of seawater. Studies of the products and intermediates of the reactions will be made (when possible) in an attempt to elucidate the mechanisms of the actions. During the next two years it is also planned to continue measurements on oxidation of H2S with the oxides of Fe(II) in seawater. The measurements will be made as a function of pH, temperature, and salinity. The disappearance of H2S and the appearance of Fe(II) will be measured. It is also planned to determine how the products S, SO3 2-, and S2O3 2- are affected by pH, temperature, and salinity. Studies will also be initiated on the reduction of Fe(III) with H2S03 and the oxidation of Fe(II) with O2 at nM levels in natural waters. New thermodynamic modeling will be carried out on the carbonate system and the state of Fe(II) and Fe(III) in seawater. These studies will hopefully lead to a consistent set of stability constants and Pitzer interaction parameters that can be used to characterize these systems in natural waters.