Project 4: Dynamic Transport and Exposure Pathways of Contaminants in Karst Groun

项目4:喀斯特地貌污染物的动态迁移和暴露路径

基本信息

  • 批准号:
    8884317
  • 负责人:
  • 金额:
    $ 0.1万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2010
  • 资助国家:
    美国
  • 起止时间:
    2010-04-12 至
  • 项目状态:
    未结题

项目摘要

PROJECT SUMMARY The proposed project studies the fate and transport of Superfund-related organic contaminants and the processes controlling their mobility, persistence, distribution, and paths toward potential exposures and/or remediation zones in karst groundwater systems. The project's specific aims are directed at characterizing fate and transport processes and concentration distributions of contaminants in karst groundwater systems typified by variable conduit and/or diffusion dominated flow, as those found in northern Puerto Rico. This region is the focal area of PROTECT's work to study exposure to Superfund hazardous chemicals and their potential contribution to high rates of preterm birth in Puerto Rico, which are the highest among U.S. jurisdictions, second second only to Malawi globally. The project focuses on chlorinated volatile organic compounds (CVOCs) and phthalates as model contaminants because they are ubiquitous and have been shown to have potential health impacts. The research will build on the physical, data, and collaborative research infrastructure developed by the investigators during the first three years of the project. Karst groundwater systems, which provide over 40% of the groundwater used for drinking in the U.S., develop in soluble rocks, such as limestone and dolomites. Flow in these systems may occur through fractures, conduits, and the rock matrix. In such systems, conduits can concentrate water and contaminants from direct sources and/or diffuse flow and convey them rapidly to potential-exposure discharge points such as springs. They can also convey contaminants to "trapping" diffuse-flow zones, which can result in long-term storage and subsequent release of contaminants. Developing the ability to assess and predict contaminant transport and potential exposure to contaminants in these type of aquifers is essential to understanding and preventing health effects stemming from contaminants in the groundwater. This project will characterize and quantify the factors affecting fate and transport of contaminants in karst systems. Using experimental data and field measurements, spatiotemporal contaminant distributions and transport properties will be characterized, quantified and statistically modeled. Fundamental knowledge developed from hydraulic and transport experiments in laboratory-scale models will be integrated into field- scale measurements and tracer tests through the use of geostatistical methods. At the field scale, contaminant concentrations in groundwater wells and springs in the karst system of northern Puerto Rico will be measured during wet and dry seasons. Field-scale models will be populated with historical contamination, water quality, and hydrogeologic data from the karst groundwater of northern Puerto Rico, and used to describe spatial and temporal changes in contaminant distribution, providing the ability to predict potential dynamic exposure to contaminants in karst groundwater systems and establish strategies to protect public health.
项目总结

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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Ingrid Y Padilla其他文献

Ingrid Y Padilla的其他文献

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{{ truncateString('Ingrid Y Padilla', 18)}}的其他基金

Project 3 - Effect of Extreme Weather on Potential Exposure of Contaminant Mixtures in Karst Water Systems
项目 3 - 极端天气对岩溶水系统中污染物混合物潜在暴露的影响
  • 批准号:
    10335262
  • 财政年份:
    2010
  • 资助金额:
    $ 0.1万
  • 项目类别:
Project 4: Dynamic Transport and Exposure Pathways of Contaminants in Karst Groun
项目4:喀斯特地貌污染物的动态迁移和暴露路径
  • 批准号:
    8649398
  • 财政年份:
    2010
  • 资助金额:
    $ 0.1万
  • 项目类别:
Project 3 - Effect of Extreme Weather on Potential Exposure of Contaminant Mixtures in Karst Water Systems
项目 3 - 极端天气对岩溶水系统中污染物混合物潜在暴露的影响
  • 批准号:
    10558723
  • 财政年份:
    2010
  • 资助金额:
    $ 0.1万
  • 项目类别:
Project 4: Dynamic Transport and Exposure Pathways of Contaminants in Karst Groun
项目4:喀斯特地貌污染物的动态迁移和暴露路径
  • 批准号:
    8831685
  • 财政年份:
    2010
  • 资助金额:
    $ 0.1万
  • 项目类别:
Project 4: Dynamic Transport and Exposure Pathways of Contaminants in Karst Groun
项目4:喀斯特地貌污染物的动态迁移和暴露路径
  • 批准号:
    9033910
  • 财政年份:
    2010
  • 资助金额:
    $ 0.1万
  • 项目类别:
Project 4: Dynamic Transport and Exposure Pathways of Contaminants in Karst Groun
项目4:喀斯特地貌污染物的动态迁移和暴露路径
  • 批准号:
    9926980
  • 财政年份:
  • 资助金额:
    $ 0.1万
  • 项目类别:

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