Reactive oxygen species production on oxygenation of subsurface sediments

地下沉积物氧化过程中活性氧的产生

• 批准号: DP170103512
• 负责人: Prof David Waite
• 金额: $ 23.43万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP170103512
• 关键词: Reactive; oxygen; species; production; oxygenation

This project aims to examine the nature, extent and effect of redox processes in subsurface environments. Reactive oxygen species, including hydrogen peroxide, superoxide and hydroxyl radicals, transform and affect redox-active substances in the environment such as arsenic, uranium and natural organic matter (which may be oxidised to carbon dioxide). Production of significant quantities of reactive oxygen species on oxygenation of subsurface sediments through actions such as aquifer recharge and high flow events may alter the form and mobility of trace elements and influence the cycling of carbon and eventual efflux of carbon dioxide to the atmosphere. This project will examine the nature, extent and effect of these redox processes in selected subsurface environments. This research could have implications for contaminant transformation and fate and carbon cycling.

该项目旨在检查地下环境中氧化还原过程的性质，程度和影响。活性氧，包括过氧化氢，超氧化物和羟基自由基，在环境中转化并影响氧化还原活性物质，例如砷，铀和天然有机物（可能被氧化为二氧化碳）。通过含水层补给和高流动事件等作用产生大量活性氧在地下沉积物中的氧合，可能会改变痕量元素的形式和迁移率，并影响碳和二氧化碳二氧化碳对大气的循环。该项目将在选定的地下环境中检查这些氧化还原过程的性质，程度和效果。这项研究可能对污染物的转化，命运和碳循环有影响。