The Fate of Trace Metals in Freshwater Sediments: An Experimental and Modeling Approach

淡水沉积物中痕量金属的归宿：实验和建模方法

• 批准号: 9309349
• 负责人: Jean-Francois Gaillard
• 金额: $ 6.39万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-01 至 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9309349&HistoricalAwards=false
• 关键词: Fate; Trace; Metals; Freshwater; Sediments

9309349 Gaillard This is an award to support research, the objective of which is to gain a fundamental understanding of the fate of trace metals in freshwater sediments. The investigator plans on using an approach that involves both experimental and mathematical modeling of the problem, assessing the extent to which trace metals could be buried permanently in sediments or remobilized into overlying waters under natural conditions. The experimental work involves determination of trace metal distributions in interstitial waters and bulk sediments and on the measurement of trace metal binding to sediment particles and authigenic particles. The proposal leading to this award was submitted in response to NSF 92-122, Research Initiation Awards Program Announcement and Guidelines. Results are expected to provide a more fundamental understanding than now exists of phenomena that are associated with the processes by which trace metal constituents of sediments in lakes and streams can pollute the overlying water. This in turn can lead to an improvement in predicting the behavior of trace metals in sediments and potentially find application as a prognostic tool for assessing the release of metals from polluted sediments.

9309349盖拉尔这是一个支持研究的奖项，其目的是获得对淡水沉积物中痕量金属命运的基本了解。 研究人员计划使用一种方法，包括实验和数学建模的问题，评估在何种程度上痕量金属可以永久埋藏在沉积物或重新移动到覆盖沃茨在自然条件下。 实验工作包括测定间隙沃茨和沉积物中的痕量金属分布，以及测量沉积物颗粒和自生颗粒中的痕量金属结合。 该奖项的提案是根据NSF 92-122《研究启动奖计划公告和指南》提交的。 结果预计将提供一个更基本的理解比现在存在的现象，与湖泊和河流中的沉积物中的微量金属成分污染上覆水的过程。 这反过来又可以导致在预测沉积物中的痕量金属的行为的改进，并有可能找到应用程序作为一种预测工具，用于评估从污染的沉积物中释放的金属。