Tracing element pathways and processes of Fe, Cu, Zn and Mo in the geosphere and biosphere using stable isotopes

使用稳定同位素示踪地球圈和生物圈中 Fe、Cu、Zn 和 Mo 的元素路径和过程

• 批准号: RGPIN-2015-05551
• 负责人: Wieser, Michael
• 金额: $ 1.6万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=678914
• 关键词: Tracing; element; pathways; processes; Fe

The metals iron, copper, zinc and molybdenum play critical roles in a number of significant physiochemical processes. For example, changes in the oxidation state of molybdenum may be linked to changes in the ability of paleo-oceans to have supported life; the metabolism of copper by metalloproteins plays an important role in regulating the distribution of this redox sensitive element in the brain; zinc is used extensively in industry and its presence in the environment might be a useful indicator of anthropogenic activities. Each of these elements possesses several stable isotopes and considerable variations in the isotopic compositions are reported. There is an important opportunity to utilize isotopic composition to learn the function of these key elements at the Earth-Human interface with the ultimate goal of applying this knowledge to challenges in health and environmental chemistry. The goals of the research to be supported by this Discovery Grant are to employ stable isotope techniques to uncover the distribution and variability of isotopic abundances in selected systems; identify the critical regions and interactions in a system where changes in isotopic composition occur; and understand the actual physiochemical processes that are responsible for the isotopic variability. Because these elements are often associated with each other in biogeochemical processes we will seek to synthesize our knowledge of Fe, Cu, Zn and Mo isotopic fractionations to yield a more comprehensive understanding of complex interactions. We want to understand why changes in the isotopic composition of Fe, Cu, Zn and Mo occur and exploit this knowledge to better understand the role of these elements in biogeochemical interactions. **

金属铁，铜，锌和钼在许多重要过程中起着关键作用。在行业中的这种氧化还原敏感的元素及其在人为激活的融合指标中的存在。安达斯和化学。是同位素的变异性。 **