USGS Professional Pages
Research ChemistContact Info
1989 to present - U. S. Geological Survey - Lead Scientist -
‘Biogeochemistry of Metals and Nutrients in Sediments’.
1984 - PhD. - The American University, Washington, D.C. -
Physical and Analytical Chemistry.
1977 to present - U.S. Geological Survey, Reston, VA.
1976-1977 - Research Associate –
The American University, Washington, D.C.
PublicationsMebane, C.A., Simon, N.S., Maret, T.R., 2014, Linking nutrient enrichment and streamflow to macrophytes in agricultural streams, Hydrobiologia, 722(1), pp. 143-158. DOI 10.1007/s10750-013-1693-4.
Simon, N.S., ‘Chemical processes for decreasing cyanophyte hepatotoxic compounds and maximizing amino acid concentrations in cyanobacteria biomass’. This patent application is related to and claims the benefit of priority to U.S. Provisional Application Ser. No. 61/824,289 filed May 16, 2014, in the U.S. Patent and Trademark Office.
Simon, N.S., Ali, A.A., Samperton, K.M., Korson, C.S., Fischer, Kris, and Hughes, M.L., 2013, Characterization of cyanophyte biomass in a Bureau of Reclamation reservoir, U.S. Geological Survey Open-File Report 2013–1156, 59 p., [Link]
Wood, T.M., Wherry, S.A., Carter, J.L., Kuwabara, J.S., Simon, N.S., and Rounds, S.A., 2013, Technical evaluation of a total maximum daily load model for Upper Klamath and Agency Lakes, Oregon: U.S. Geological Survey Open-File Report 2013–1262, 75 p, [Link]
Simon, Nancy S. and Ingle, Sarah N., 2011, Physical and Chemical Characteristics Including Total and Geochemical Forms of Phosphorus in Sediment from the Top 30 Centimeters of Cores Collected in October 2006 at 26 Sites in Upper Klamath Lake, Oregon, U.S. Geological Survey Open-File Report 2011-1168, 49 p. File Report 2011-1168
Simon, N.S., Lynch, D. and Gallaher, T.N., 2009, Phosphorus fractionation in sediment cores collected in 2005 before and after onset of an Aphanizomenon flos-aquae bloom in Upper Klamath Lake, OR, USA, Water, Air and Soil Pollution, 204, 139-153.DOI: 10.1007/s11270-009-0033-9
Kuwabara, J.S., Lynch, D.D., Topping, B.R., Murphy, F., Carter, J.L., Simon, N.S., Parchaso, F., Wood, T.M., Lindenberg, M.K., Wiese, K., and Avanzino, R., 2007, Quantifying the benthic source of nutrients to the water column of Upper Klamath Lake, Oregon: U.S. Geological Survey Open-File Report 2007-1276, 39 p. http://pubs.er.usgs.gov/usgspubs/ofr/ofr20071276
Simon, N.S. and Lynch, D., 2007, Internal Phosphorus Loading and Variation in the Composition of Bottom Sediments in Upper Klamath Lake, Oregon. Proceedings of Upper Klamath Basin Annual Water Quality and Fisheries Science Review, Bureau of Reclamation, Klamath Falls, January 9-10, 2007.
Speiran, G.K., Simon, N.S. and Mood-Brown, M.L., 2007, Processes Affecting Phosphorus and Copper Concentrations and Their Relation to Algal Growth in Two Supply Reservoirs in the Lower Coastal Plain of Virginia, 2002-2003, and Implications for Alternative Management Strategies: U.S. Geological Survey Scientific Investigations Report 2006-5277, 76 pp. http://pubs.er.usgs.gov/usgspubs/sir/sir20065277
American Chemical Society, Committee on Analytical Reagents, 2006, Reagent Chemicals, Specifications and Procedures, 10th Edition, Washington, D.C., 806 pp. I serve on the ACS committee which authors this book. http://pubs.acs.org/reagents/index.html
Simon, N.S., Bricker, O.P., Newell, W., McCoy, J., and Morawe, R., 2005, The Distribution of Phosphorus in Popes Creek, VA, and in the Pocomoke River, MD: Two Watersheds with Different Land Management Practices in the Chesapeake Bay Basin , Water, Air and Soil Pollution, vol. 164, no. 1-4, p. 189-204 http://dx.doi.org/10.1007/s11270-005-3024-5
Simon, N.S., Loosely Bound Oxytetracycline in Riverine Sediments form Two Tributaries of the Chesapeake Bay, 2005, Environmental Science and Technology, 39 (10), 3480-3487. http://pubs.acs.org/cgi- bin/article.cgi/esthag/2005/39/i10/html/es049039k.html
Harthill, M.K. and Simon, N.S., 2005 Sorbant Sequestration and Removal of Toxic Metal Ions. http://www.patentstorm.us/patents/6896813/claims.html
Bricker, O.P., Newell, W.L., and Simon, N.S., Bog Iron Formation in the Nassawango Watershed, Maryland, 2003, , U.S. Geological Survey Open-File Report 03-346, on-line only. http://pubs.usgs.gov/of/2003/ofr03-346
Simon, Nancy. 2003. Sources and bioavailability of oxytetracycline in bottom sediment from the Pocomoke River, MD, USA, 226th American Chemical Society National Meeting, New York, NY. Division of Environmental Chemistry Preprints of Papers, Vol. 43, No. 2, pp. 1293-1297.
Barlow, R.A., Brakebill, J.W., Bratton, J.F., Blazer, V.S., Bohlke, J.F., Bricker, O.P., Colman, S.M., Cronin, T.M., Hupp, C.R., Keough, J.R., Landwehr, J.M., Langland, M.J., Newell, W.L., Perry, M.C., Phillips, S.W., Preston, S.D., Rybicki, N.B., Simon, N.S., Willard, D.A., Phillips, S.W., 2002, The U.S. Geological Survey and the Chesapeake Bay – The role of science in environmental restoration: U.S. Geological Survey Circular 1220. http://pubs.er.usgs.gov/usgspubs/cir/cir1220
Simon, N.S. and Isbister, J., 2001, Phosphate Geochemistry and Microbial Activity in Surface Sediments from the Conowingo Reservoir and Susquehanna Flats, MD: Summary of Findings -Proceedings of the Sediment Symposium, Susquehanna River Basin Commission Sediment Task Force, December 7-8, 2000, Hershey, PA, Publication No. 216E (CD), pp. 75-82. http://www.srbc.net/programs/docs/tablecontents.pdf
Simon, N.S, 2001, Phosphate Geochemistry and Microbial Activity in Surface Sediments from the Conowingo Reservoir and Susquehanna Flats, MD --Proceedings of the Sediment Symposium, Susquehanna River Basin Commission Sediment Task Force, December 7-8, 2000, Hershey, PA, Publication No. 216E (CD), pp. 73-74. http://www.srbc.net/programs/docs/tablecontents.pdf
Hall, R.L., Giancarlo, L., and Simon, N.S., 2001, Metal and phosphate analysis of Chesapeake Bay Interstitial Water and Sediment, Abstracts from the April 2001 meeting of the Virginia section of the American Chemical Society, University of Virginia, Charlottesville, VA, April 20, 2001.
Isbister, Jenefir, Thomas B. Huff, Nancy S. Simon, and Trinh Tu, 2000, Ecological Effects of Antibiotics in Runoff from an Eastern Shore Tributary of the Chesapeake Bay, in Effects of Animal Feeding Operations on Water Resources and the Environment—Proceedings of the Technical Meeting, Fort Collins, Colorado, August 30-September 1, 1999: U.S. Geological Survey Open-File Report 00-204, p. 78. http://pubs.er.usgs.gov/usgspubs/ofr/ofr00204
Simon, Nancy S., Jenefir Isbister and Joseph Margraf, 2000, Phosphorus Geochemistry in Two Coastal Plain Watersheds with Different Land Management Practices: Processes Involving Organophosphorus Compounds, in Effects of Animal Feeding Operations on Water Resources and the Environment—Proceedings of the Technical Meeting, Fort Collins, Colorado, August 30-September 1, 1999: U.S. Geological Survey Open-File Report 00-204, p. 53. http://pubs.er.usgs.gov/usgspubs/ofr/ofr00204
American Chemical Society, Committee on Analytical Reagents, 2000, Reagent Chemicals, 9th Edition, multiple editors, Simon, N.S., included, American Chemical Society Specifications: Washington, D.C. 752 pp. I serve on the ACS committee which writes this book.
Simon, N.S., Kennedy, M.M., and Bricker, O.P.,1999, Geochemical Data for Sediment Samples Collected in 1997 and 1998 from the Popes Creek, VA and Pocomoke River, MD, Watersheds, Open-File Report, OPR 99-79, 18 pp. http://pubs.er.usgs.gov/usgspubs/ofr/ofr9979
Cox, T., Simon, N., and Newland, L., 1999, Copper, Lead, Mercury and Zinc in Periphyton of the South Florida Ecosystem, Toxicological and Environmental Chemistry, 70, 259-274. http://www.sofia.usgs.gov/publications/papers/metalsinperi
Simon, N.S., Spencer, R., and Cox, T., 1999, Distribution of, and Relation Among Mercury and Methylmercury, Organic Carbon, Carbonate, Nitrogen and Phosphorus, in Periphyton of the South Florida Ecosystem, Toxicological and Environmental Chemistry, 69, 417-433. http://www.sofia.usgs.gov/publications/papers/metalsinperi
Simon, N.S., Cox, T., and Spencer, T., 1998, Analytical Data for Periphyton and Water Samples collected in 1995 and 1996 from the South Florida Ecosystem, Open-file Report, OFR 98-76, 33 pp. http://pubs.er.usgs.gov/usgspubs/ofr/ofr9876
Simon, N.S., 1997, Supercritical Fluids Carbon Dioxide Extraction and Liquid Chromatographic Separation with Electrochemical Detection of Methylmercury from Biological Samples, The International Journal of Environmental Analytical Chemistry, 68 (3) 313-330. DOI: 10.1080/03067319708030498
Simon, N.S., Spencer, R.J., and Haag, K.H., 1997, Distribution of Mercury in the Periphyton Mats of the South Florida Ecosystem, http://sflwww.er.usgs.gov/sfep/abstracts-97/simon.html.
Simon, N.S. , Spencer, R.J., and Haag, K.H., 1997, Distribution of Mercury in the Periphyton Mats of the South Florida Ecosystem, U.S. Geological Survey Program of the South Florida Ecosystem, Proceedings of the Technical Symposium in Ft. Lauderdale, Florida, August 25-27, 1997, U.S.Geological Survey Open-File Report 97-385, pp.83-84. http://pubs.er.usgs.gov/usgspubs/ofr/ofr97385
Kendall, C., Garrison, P., Lange, T., Simon, N.S., Krabbenhoft, D.P., Steinitz, D., and Chang, C.C., 1997, Evaluating food chain relations using stable isotopes, U.S. Geological Survey Program on the South Florida Ecosystem-Proceedings of the Technical Symposium in Ft. Lauderdale, Florida, August 25-27, 1997: U.S. Geological Survey Open-File Report 97-385, p. 42-43. http://pubs.er.usgs.gov/usgspubs/ofr/ofr97385
Ruppert, L., Finkelman, R., Boti, E., Milosavljevic, M., Tewalt, S., Simon, N., and Dulong, F., 1996, Origin and significance of high nickel and chromium concentrations in pilocene lignite of the Kosovo Basin, Serbia. International Journal of Coal Geology, 29, 235-258. doi:10.1016/0166-5162(95)00031-3
Simon, N.S. 1996, Mercury and Periphyton in the South Florida Ecosystem, Fact Sheet FS-18496, DOI, USGS, Reston, VA. http://pubs.er.usgs.gov/usgspubs/fs/fs18496
Simon, N.S., 1994, The mercury problem: Application of Supercritical Fluid extraction to the study of organometallic compounds in the environment, WRD Bulletin, January-June 1994, 2628
Simon, N. S., Demas, C.R. and d'Angelo, W., 1994, Geochemistry and solid phase association of chromium in sediment from the Calcasieu River and Estuary, Louisiana, U.S.A., Chemical Geology, 116, 123-135.
American Chemical Society, Committee on Analytical Reagents, 1993, Reagent Chemicals, 8th Edition, multiple editors, Simon, N.S., included, American Chemical Society Specifications: Washington, D.C. 806 pp. I serve on the ACS committee which writes this book.
Simon, N.S. and Papageorgiou, A. J., 1993, Supercritical Fluid Extraction of Metals and Metallo-Organic Compounds from Sediment Samples, American Chemical Society, Division of Environmental Chemistry, Preprints of Papers, 205th ACS National Meeting, Denver, CO, March 28-April 2, 1993, 33 , pp. 359-362.
Simon, N. S., Hatcher, S.A, and Demas, C. R., 1992, Comparison of methods for the removal of organic carbon and extraction of chromium, manganese and iron from an estuarine sediment standard and sediment from the Calcasieu River Estuary, Louisiana, U.S.A. Chemical Geology, 100, 175-189.
Simon, N.S. and Morrison, J.F., 1991, The role of bed sediments and drift in the transport and fate of metallo-organic compounds in the Calcasieu River Estuary, Louisiana. Proceedings of the technical meeting, Monterey, California, March 11-15, 1991, Mallard, G.E. and Aronson, D.A., compilers, U.S. Geological Survey Water Resources Investigations Report 91-4034, pp. 579-582. http://pubs.er.usgs.gov/usgspubs/wri/wri914034
Simon, N. S., 1989, Phase association of trace metals in sediments from the Calcasieu River, Louisiana, Chapter E-4, Proceedings of the U.S Geological Survey Toxic Substances Hydrology Program Technical Meeting, Phoenix, Arizona, September 26-30, 1988. Gail E. Mallard and Steve E. Ragone, eds., U.S. Geological Survey, Water Resources Investigation Report 88-4220, pp. 301-308.
Simon, N.S., 1989, Nitrogen cycling between sediment and the shallow-water column in the transition zone of the Potomac River and Estuary. II. The role of wind-driven resuspension and adsorption of ammonium. Estuarine, Coastal and Shelf Science, 28, 531-547. doi:10.1016/0272-7714(89)90028-0
Simon, N.S., 1988c, The effect of different methods for removal of organic matter from material on HCl extraction of metals from sediment - Calcasieu River, Louisiana. in Mallard, G.E., and Ragone, S.E., eds., U. S. Geological Survey Toxic Substances Hydrology Program --Surface-Water Contamination: Proceedings of the technical meeting, Denver, CO, February 2-4, 1987. Gail E. Mallard, editor, U.S. Geological Survey Open-File Report 87-764. pp. 73-80. http://pubs.er.usgs.gov/usgspubs/ofr/ofr87764
Simon, N.S., 1988b, Nitrogen cycling between the sediment and the shallow-water column in the transition zone of the Potomac River and Estuary. I. Nitrate and ammonium fluxes. Estuarine, Coastal and Shelf Science. 26, 483-497. doi:10.1016/0272-7714(88)90002-9
Simon, N.S., 1988a, The rapid determination of phosphate, sulfate, and chloride in riverine interstitial waters by ion chromatography. Analytical Letters, 21, 319-330. doi:10.1080/00032718808055755
Simon, N.S., and Kennedy, M.M., 1987, The distribution of nitrogen species and adsorption of ammonium in sediments from the tidal Potomac River and Estuary. Estuarine, Coastal and Shelf Science, 25 (1), 11-26.
Simon, N.S., Kennedy, M.M., and Massoni, C.S., 1985, Evaluation and use of a diffusion-controlled sampler for determining chemical and dissolved oxygen gradients at the sediment-water interface. Hydrobiologia, 126, 135-141. http://www.springerlink.com/content/71m05455w15vr406/fulltext.pdf
Goodwin, S.D., Schultz, B.I., Parkhurst, D.L., Simon, N.S., and Callender, E., 1984, Methods for the Collection of Geochemical Data from the Sediments of the Tidal Potomac River and Estuary and Data for 1978-1980. USGS Open-File Report 84-74, 129 pp. http://pubs.er.usgs.gov/usgspubs/ofr/ofr8474
Simon, N.S., 1984, Nitrogen Cycling in Potomac River Shallow-Water Transition- Zone Sediments, University Microfilms International, Ann Arbor, MI, 191 pp. Doctoral Dissertation.
Simon, N.S., Welebir, A.J., and Aldridge, M.H., 1978, Trace organometallics in water. Report 1978, Order No. AD-AO587566, 54 pp. (Report prepared for the U.S. Army Mobility Equipment Research and Development Command, Fort Belvoir, VA).
My Science Topics
Biogeochemistry of Metals and Nutrients in Sediments
Research done by this project is expanding our understanding of the forms of nutrients (phosphorus) in lake and river sediments and providing data for models describing the movement of nutrients between water, sediment and biota. Studies focus on processes that lead to the release or retention of phosphorus (P) from sedimentary environments. Processes of interest to this project include, but are not limited to, P interactions with clays, organic matter, and poorly crystalline iron (Fe) oxides. This project examines the forms (species) of metals and nutrients in sedimentary environments. Measurements include oxidation-reduction conditions, the presence of complexing ligands, and mineral formation or dissolution. Our work with 31P Nuclear Magnetic Resonance (NMR) to determine the chemical forms of P in samples is done in collaboration with the Chemistry Department of James Madison University The forms of P in sediments determines whether this nutrient is retained or released from sediments and also whether the P is bioavailable. Bioavailable nutrients in water bodies support biological growth including algal biomass.
Mentorship of Students
Mentorship of students is an integral part of the studies done by this project. Over the duration of this project, more than 30 students have had lab and field experience and received support in their scientific studies.
12201 Sunrise Valley Dr
Reston, VA 20192
703-648-5832 - Fax
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