SUBSURFACE TRANSPORT AND FATE OF CADMIUM, ARSENIC AND LEAD

镉、砷和铅的地下迁移和归宿

• 批准号: 6271284
• 负责人: KENNETH BELITZ
• 金额: $ 14.92万
• 依托单位: DARTMOUTH COLLEGE
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-04-01 至 1999-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6271284
• 关键词: analytical chemistry; arsenic; cadmium; environmental contamination; environmental transport; field study; ground water; lead; soil; soil sampling; water sampling /testing

The objective of this project is to evaluate the importance of subsurface physical and chemical heterogeneity on the transport of metals in geologically complex materials. The project will include (1) mineralogical and chemical sampling and analyses of soils, sediment, and ground-water obtained from one or more EPA superfund sites in northern New England at which As, Cd, Ni, and/or Pb are at or above EPA action- level; (2) laboratory and field testing of hydraulic transport properties of unconsolidated deposits at the chosen field site(s); (3) geostatistical analyses of the field and laboratory data; and (4) numerical simulation of the speciation and transport of nonreactive and reactive constituents in heterogeneous geological materials. This research will allow for better prediction of the subsurface transport and fate of metals at concentrations toxic to humans.

该项目的目标是评估地下的重要性 物理和化学不均匀性对金属迁移的影响 地质复杂的材料。 该项目将包括（1） 对土壤、沉积物和沉积物进行矿物学和化学采样以及分析 从北部的一个或多个 EPA 超级基金站点获得的地下水 新英格兰地区的 As、Cd、Ni 和/或 Pb 达到或高于 EPA 行动水平 - 等级; (2)水力输送性能的实验室和现场测试 所选现场的未合并矿床； (3) 现场和实验室数据的地质统计分析；和（4） 非反应性和非反应性物质的形态和传输的数值模拟 非均质地质材料中的活性成分。 这 研究将有助于更好地预测地下运输和 对人类有毒浓度的金属的命运。