Probe Techniques for Studying Mediated Reduction Reactions of Organic Pollutants: Research Initiation Award

研究有机污染物介导还原反应的探针技术：研究启动奖

• 批准号: 9212059
• 负责人: Paul Tratnyek
• 金额: --
• 依托单位: Oregon Graduate Institute of Science & Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9212059&HistoricalAwards=false
• 关键词: Probe; Techniques; Studying; Mediated; Reduction

This is an award to support research to find a strategy for describing the reduction kinetics of organic substrates in natural environments that is both rigorously deterministic in theory as well as being amenable to practical application. The approach will be to treat the substance directly responsible for the reduction of organic pollutants as electron-transfer mediators that are present at low steady- state concentration and can be assayed by their rate of reaction with selective probe compounds. The first part of this project will be to identify suitable probe compounds for likely reduction mediators, and to verify that these techniques can be used in natural media. Later, the most promising probe technique will be applied to show that the mediator to which the probe technique responds is, in fact, contributing to reduction in environmental systems. Finally, the utility of the whole approach for predicting the rate of specific reduction reactions of organic pollutants in the environment will be demonstrated. The proposal leading to this award was submitted in response to NSF 88-99 as modified by changes dated 09/19/91 to make the Research Initiation Award announcement consistent with changes in NSF 83-57 and published as NSF 90- 77. Despite recent research on the reduction reactions of organic pollutants in anaerobic sediments, soils, and groundwaters, it is not yet possible to quantitatively predict the rates of any of these transformations. This severely restricts the consideration of reduction processes in regulatory decision- making and contributes to the unreliability of remediation technologies that rely on these reactions. If this research proves to be as successful as it was for describing the kinetics of photooxidation in sunlit surface water, it is likely to influence the way most research on the kinetics of reduction reactions in anaerobic environmental systems is done in the future. Results of this research are likely to be applied to engineering design of processes and systems for decontamination of soils and groundwater.

这是一个奖项，以支持研究找到一种在自然环境中描述有机底物还原动力学的策略，该策略在理论上是严格确定的，并且适合于实际应用。该方法将直接负责减少有机污染物的物质视为电子转移介质，这些介质存在于低稳态浓度下，可以用选择性探针通过其反应速率进行分析化合物。该项目的第一部分将是确定合适的探针化合物作为可能的还原介质，并验证这些技术可以在自然介质中使用。稍后，最有希望的探针技术将被应用于证明，探针技术响应的介质实际上有助于减少环境系统。最后，将演示整个方法在预测环境中有机污染物的特定还原反应速率方面的效用。该奖项的提案是根据NSF 88-99提交的，并在1991年9月19日进行了修改，以使研究启动奖公告与NSF 83-57的修改一致，并以NSF 90- 77发布。​尽管最近对厌氧沉积物、土壤和地下水中有机污染物的还原反应进行了研究，但尚无法定量预测任何这些转化的速率。这严重限制了监管决策中对还原过程的考虑，并导致依赖于这些反应的补救技术的不可靠性。如果这项研究被证明是成功的，因为它描述了在阳光照射下的地表水的光氧化动力学，它很可能会影响大多数研究的方式在厌氧环境系统的还原反应动力学在未来完成。本研究结果可能应用于土壤和地下水净化过程和系统的工程设计。