Perchlorate (and Other Oxyanions) in the Hydrologic Cycle—Origins, Accumulation, Transformations, and Transport
The U.S. Geological Survey (USGS), Texas Tech University, and
U.S. Environmental Protection Agency are co-sponsoring the special session "Perchlorate (and
Other Oxyanions) in the Hydrologic Cycle—Origins, Accumulation, Transformations, and Transport (H03)" at the American
Geophysical Union Fall Meeting, San Francisco, California, December 10-14, 2007. The session will include presentations on
recent developments in microbial and isotopic systematics of perchlorate; abundances in plants, soils, and ground water; and
research on sources and source identification. Case studies documenting the fate and transport of perchlorate in a wide
variety of natural and perturbed systems will also be presented.
Session Description
Recent advances in analytical techniques are revealing the chemical, isotopic, and microbial systematics of perchlorate
and other oxyanions in the hydrologic cycle—whether naturally occurring or introduced by human activities. All topics are
welcome, including atmospheric reactions and deposition, microbial and chemical transformations in soil and plant
environments, accumulation in unsaturated zones, fate and transport in ground water, risk assessment, and case studies on
contamination and remediation.
USGS Presentations
- Widespread Occurrence of Plant Perchlorate, by Harvey, G.
(United States Air Force), Orris, G. (USGS), Jackson, W.A. (Texas Tech University), Rajagopalan, S. (Texas Tech
University), Andraski, B. (USGS), and Stonestrom, D. (USGS)
- Natural Perchlorate and Climate-An Imperfect Relationship,
by Orris, G.J. (USGS), Jackson, W.A. (Texas Tech University), Harvey, G.J. (U.S. Air Force), and Betancourt, J. (USGS)
- Isotopic Discrimination of Perchlorate Sources in Ground
Water, by Böhlke, J.K. (USGS), Hatzinger, P.B. (Shaw Environmental, Inc.), Sturchio, N.C. (University of
Illinois at Chicago), Gu, B. (Oak Ridge National Laboratory), Jackson, W.A. (Texas Tech University), and Abbene, I.J.
(USGS)
- Enriched Perchlorate and Relationship with Other Major Anions
in Atmospherically Derived Deposits of Nitrate of the Mojave Desert, by Jackson, W.A. (Texas Tech University),
Anderson, T.A. (Texas Tech University), Orris, G.J. (USGS), Böhlke, J.K. (USGS), and Rajagopalan, S. (Texas Tech
University)
- Systematics of Natural Perchlorate in Precipitation, Soils,
and Plants at the Amargosa Desert Research Site, Nye County, Nevada, by Andraski, B.J. (USGS), Stonestrom, D.A.
(USGS), Jackson, W.A. (Texas Tech University), Rajagopalan, S. (Texas Tech University), and Taylor, E.M. (USGS)
- Perchlorate in the Hydrologic Cycle - An Overview of Sources
and Occurrence, by Stonestrom, D.A. (USGS), Jackson, W.A. (Texas Tech University), Mayer, K. (U.S. Environmental
Protection Agency), and Orris, G.J. (USGS)
Conveners
- David A. Stonestrom, USGS,
- W. Andrew Jackson, Texas Tech University,
- Greta J. Orris, USGS,
- Kevin Mayer, U.S. Environmental Protection Agency,
General Conference Information
Related Headline
More Information on Perchlorate
- Science News – Perchlorate is widespread in U.S. Southwest—The widespread occurrence of natural perchlorate in unsaturated zones of the southwestern U.S. approaches that of other sources, Naomi Lubick, June 6, 2007: Environmental Science and Technology
- Waste Disposal and Contaminant Migration in the Arid Southwest, Amargosa Desert Research Site, Nevada
- Environmental Tracers of Surface-Water/Ground-Water Interactions
- Characterization of Biotic and Biogeochemical Interactions at Environmental Interfaces
- Orris, G.J., Harvey, G.J., Tsui, D.T., and Eldrige, J.E., 2002, Preliminary analyses for perchlorate in selected natural materials and their derivative products: U.S. Geological Survey Open-File Report 03-314, 6 p.
- Ericksen, G. E., 1981, Geology and origin of the Chilean nitrate deposits: U.S. Geological Survey Professional Paper 1188, 37 p.
- U.S. Environmental Protection Agency, 2005, Perchlorate and perchlorate salts: Integrated Risk Information System (on-line database).
- U.S. Environmental Protection Agency, 2007, Contaminant Focus—Perchlorate: CLU-IN.ORG, Technology Innovation Program, Web page.
- Böhlke, J.K., Sturchio, N.C., Gu, B., Horita, J., Brown, G.M., Jackson, W.A., Batista, J.R., and Hatzinger, P.B., 2005, Perchlorate isotope forensics: Analytical Chemistry, v. 77, no. 23, p. 7838-7842, doi:10.1021/ac051360d.
- Plummer, L.N., Böhlke, J.K., and Doughten, M.W., 2006, Perchlorate in Pleistocene and Holocene groundwater in north-central New Mexico: Environmental Science and Technology, v. 40, no. 6, p. 1757-1763, doi:10.1021/es051739h.
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