George Aiken Mike Reddy, Paul F. Schuster, Charmaine Gunther,, 2005, Everglades Water chemistry - Cations and Anions.Online Links:
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.1. Longitudes are given to the nearest 0.1. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257.
This work has been done as part of the U.S. Geological Survey South Florida Ecosystems Initiative and was funded in part by the U.S. Environmental Protection Agency (through Grant IAG #DW14936802-01-0).
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graiken@usgs.gov
It is well recognized that the chemical forms of mercury in the water column and sediments are intimately related to bioaccumulation and body burden. Interactions of mercury and dissolved organic matter may play an important role in controlling the bioavailability and reactivity of mercury. The goal of our research is to provide information about the interactions of mercury and dissolved organic matter that will better define this important, albeit, poorly understood process. Ultimately, this research will lead to a more complete model of mercury behavior in the Everglades. Our research focused on the effect of DOC on the transport and reactivity of mercury in the Everglades through a combined field and laboratory study. The underlying hypothesis of this research is that the chemistry and structural characteristics of organic matter in the Everglades have a controlling influence on mercury cycling processes such as methylation and volatilization.The South Florida Water Management District, the U.S. Environmental Protection Agency, and the USGS South Florida Ecosystems Initiative have organized an intensive study of surface water chemistry in Southern Florida. In 1994, several onsite-research locations were selected in the Water Conservation Areas of the South Florida Water Management District in conjunction with this multidisciplinary, multiagency research project.
A replicate sample was collected from selected Everglades Study Sites to evaluate onsite-sampling variability. Distilled-water blank samples and standard reference water samples (SRWS) were submitted to the laboratory with the onsite samples and were analyzed concomitantly with them. Reference samples were processed using the same procedures as the onsite samples.
A total of 27 samples from 10 locations from South Florida Water Management District Water Conservation Areas have been analyzed using a protocol designed to minimize errors associated with sample handling procedures, laboratory analyses, and data-entry operations.
Person who carried out this activity:
303 541-3036 (voice)
303 447-2505 (FAX)
graiken@usgs.gov
Aiken, G. R., 1992, Chloride Interference in the Analysis of Dissolved Organic Carbon by the wet oxidation method the Wet Oxidation Method: Environmental Sciences and Technology v.26, p.2435-2439, Kluwer Academic Press, Dorcrecht, Netherlands.
Cotlove, E. Trantham, H. V., Bowman, R. L., 1958, An Instrument and Method for Automatic, Rapid, Accurate and Sensitive Titration of Chloride in Biologic Samples Titration of Chloride in Biologic Samples: Journal of Laboratory and Clinical Medicine v.51, p.461-468, Elsevier Inc., New York, NY.
Garbarino, J. R. Taylor, H.E., 1979, An inductive-coupled plasma atomic-emission spectrometric method for routine water quality testing Routine Water Quality Testing: Applied Spectroscopy v.33, no.3, p.220-226, Society for Applied Spectroscopy, Frederick, MD.
Garbarino, J. R. Taylor, H. E., 1980, A Babington-type nebulizer for use in the analysis of natural water samples by inductively coupled plasma spectrometry: Applied Spectroscopy v.34, no.5, p.584-590, Society for Applied Spectroscopy, Frederick, MD.
Reddy, N. M. Schuster, P. F. , Harte, J., 1989, Summary of data from onsite and laboratory analyses of precipitation runoff from carbonate-stone surfaces, National Acid Precipitation Assessment Program, June 1984 to November 1987: USGS Open-File Report OFR 89-246, U.S. Geological Survey, Reston, VA.Online Links:
Schroder, L. J. Fishman, M. J., Friedman, L, 1980, The use of standard reference water samples by the U.S. Geological Survey Survey: USGS Open-File Report OFR 80-738, U. S. Geological Survey, Reston, VA.Online Links:
Skougstad, M. W. Fishman, M. J., Friedman, L, 1979, Methods for the determination of inorganic substances in water and fluvial sediments: USGS Open-File Report OFR 85-495, Book 5, Chapter A1, U. S. Geological Survey, Reston VA.
Taylor, H. E. Schiller, A. M., Garbarino,, 1995, Intercomparison Experiments on Dissolved Trace-Metal Data from the Mississippi River and some of its Tributaries, 1989-1990: USGS Open-File Report OFR 93-628, U.S. Geological Survey, Reston VA.Online Links:
Wood, W. W., 1976, Guidelines for Collection and Field Analysis of Groundwater Samples for Selected Unstable Constituents: Techniques of Water Resources Investigations of the U.S. Geological Survey Book 1, Chapter D2, U. S. Geological Survey, Reston VA.Online Links:
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aiken - cation and anions
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