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GWERD Research on Arsenic in Ground Water
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Successful prevention of public exposure to arsenic in ground-water resources impacted
by natural sources or contaminated sites is dependent on scientifically based strategies
for site remediation and water resource management. Research within the Ground Water
and Ecosystems Restoration Division is directed towards building the fundamental basis
for optimizing remediation technologies and management approaches to protect ground-water
resources. Through various in-house and extramural research efforts, the Division
actively pursues three key areas addressing arsenic contamination in ground-water
systems: 1) elucidation of arsenic geochemistry at local and regional scales in
various aqueous environments, 2) development of remediation technologies for subsurface
systems, and 3) development of robust site characterization technologies for arsenic in
liquid and solid matrices. Together, these research components provide the Agency with
a technically defensible approach to protect human health.
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Site of arsenic contamination due to ground-water
discharge into a wetland. The chemical cycling and ultimate
transport of arsenic within the ground-water aquifer and wetland
is controlled by the biogeochemical cycling of iron, sulfur
and carbon. Knowledge of the redox chemistry of these elements
and application of appropriate site characterization methods
are critical to understanding the fate of arsenic. |
Recent Highlights
- Publication: Wilkin, R.T., Wallschläger, D., and Ford, R.G.
(2003). Speciation of arsenic in sulfidic waters. Geochemical
Transactions, 4:1-7.
- Publication: Su, C., and R. W. Puls. 2003. In situ remediation
of arsenic in simulated groundwater using zerovalent iron: Laboratory
column tests on combined effects of phosphate and silicate. Environmental
Science & Technology, 37:2582-2587.
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