Package for time resolved in situ ATR-FTIR spectroscopy at the solid/water interface

固/水界面时间分辨原位 ATR-FTIR 光谱套件

• 批准号: 359354-2008
• 负责人: Peak, Derek
• 金额: $ 2.4万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=362609
• 关键词: Package; time; resolved; situ; ATR

In the soil environment, reactions are seldom in true equilibrium. Instead, changes in the chemical makeup of the soil solution are constantly affecting the solubility of minerals, the surface charge of solid phases, and sorption and release of trace metals. For these reasons, kinetics (time dependence of reaction) is an important variable in studying the reactivity of soils. When kinetics data are combined with molecular-scale studies ofthe mechanisms of adsorption, a clear picture of contaminant reactivity can be obtained. However, there are very few techniques capable of studying the mechanisms of reactions at the mineral/water interface in real time. The proposed equipment will allow us to monitor many important chemical reactions on hydrated mineral surfaces in real time using Attenuated Total Reflectance (ATR-FTIR) spectroscopy.

在土壤环境中，反应很少处于真正的平衡状态。相反，土壤溶液化学成分的变化不断地影响矿物的溶解度、固相的表面电荷以及痕量金属的吸附和释放。因此，动力学(反应的时间依赖性)是研究土壤反应性的一个重要变量。当动力学数据与吸附机理的分子尺度研究相结合时，可以清楚地了解污染物的反应性。然而，很少有技术能够实时研究矿物/水界面上的反应机理。拟议的设备将使我们能够使用衰减全反射(ATR-FTIR)光谱实时监测水化矿物表面的许多重要化学反应。