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https://www.usgs.gov/staff-profiles/tyler-coplen
https://www.usgs.gov/staff-profiles/john-karl-bohlke
https://www.usgs.gov/staff-profiles/haiping-qi

1992

Böhlke, J.K., and Irwin, J.J., 1992, Brine history indicated by argon, krypton, chlorine, bromine, and iodine analyses of fluid inclusions from the Pb-fluorite deposits at Hansonburg, New Mexico: Earth and Planetary Science Letters, v. 110, p. 51-66.
Böhlke, J.K., and Irwin, J.J., 1992, Laser microprobe analyses of noble gas isotopes and halogens in fluid inclusions: Analyses of micro-standards and synthetic inclusions in quartz: Geochimica et Cosmochimica Acta, v. 56, p. 187-201.
Böhlke, J.K., and Irwin, J.J., 1992, Laser microprobe analyses of Cl, Br, I, and K in fluid inclusions: Implications for sources of salinity in some ancient hydrothermal fluids: Geochimica et Cosmochimica Acta, v. 56, p. 203-225.
Cecil, L.D., Pittman, J.R., Beasley, T.M., Michel, R.L., Kubik, P.W., Sharma, P., Fehn, U., and Gove, H.E., 1992, Water infiltration in the unsaturated zone at the Idaho National Engineering Laboratory estimated from chlorine-36 and tritium profiles, and neutron logging, in Kharaka, Y., and Maest, A., eds., Rotterdam, Netherlands, A.A. Balkema: Water-Rock Interaction, p. 709-714.
Coplen, T.B., Krouse, H.R., and Böhlke, J.K., 1992, Reporting of nitrogen-isotope abundances: Pure and Applied Chemistry, v. 64, p. 907-908.
Izbicki, J., Michel, R.L., and Martin, P., 1992, H-3 and C-14 as tracers of ground-water recharge, in Proceedings of the American Society of Civil Engineers 1992 National Conference, p. 122-127.
Keir, R.S., Michel, R.L., and Weiss, F., 1992, Ocean mixing versus gas exchange in Antarctic shelf water near 150 degrees E: Deep-Sea Research, v. 39, p. 97-119.
Michel, R.L., 1992, Residence times in river basins as determined by analyses of long-term tritium records: Journal of Hydrology, v. 130, p. 367-378. (on-line abstract)
Winograd, I.J., Coplen, T.B., Landwehr, J.M., Riggs, A.C., Ludwig, K.R., Szabo, B.J., Kolesar, P.T., and Revesz, K.M., 1992, Continuous 500,000-year climatic record from vein calcite in Devils Hole, Nevada: Science, v. 258, p. 255-260.




1993

Böhlke, J.K., Gwinn, C.J., and Coplen, T.B., 1993, New reference materials for nitrogen-isotope-ratio measurement: Geostandards Newsletter, v. 17, p. 159-164. (on-line abstract)
Coplen, T.B., 1993, Uses of environmental isotopes, in Alley, W.M., ed., Regional ground-water quality: New York, Van Nostrand Reinhold, p. 227-254.
Dunkle, S.A., Plummer, L.N., Busenberg, E., Phillips, P.J., Denver, J.M., Hamilton, P.A., Michel, R.L., and Coplen, T.B., 1993, Chlorofluorocarbons (CC13F and CC12F2) as dating tools and hydrologic tracers in shallow ground water of the Delmarva Peninsula, Atlantic Coastal Plain, USA Chlorofluorocarbons (CC13F and CC12F2) as dating tools and hydrologic tracers in shallow ground water of the Delmarva Peninsula, Atlantic Coastal Plain, USA
Keir, R.S., and Michel, R.L., 1993, Interface dissolution control of core top radiocarbon age: Geochimica et Cosmochimica Acta, v. 57, p. 3563-3574.
Landwehr, J.M., Winograd, I.J., Coplen, T.B., Riggs, A.C., Ludwig, K.R., and Szabo, B.J., 1993, Stochastic analysis of delta 0-18 and delta C-13 time series found in a continuous 500,000-year climatic record from Great Basin Vein Calcite, in Kelmelis, J.A., and Snow, M., eds., Proceeding of the U.S. Geological Survey Global Change Research Forum, Herndon, VA: U.S. Geological Survey Circular 1086, p. 86.
Naftz, D.L., Michel, R.L., and Miller, K.A., 1993, Isotopic indicators of climate in ice cores, Wind River Range, Wyoming, in Swart, P.K., Lohman, K.C., McKenzie, J., and Savin, S., eds., Climate Change in Continental Isotopic Records, Geophysical Monograph 78, p. 55-66.
Plummer, L.N., Michel, R.L., Thurman, E.M., and Glynn, P.D., 1993, Environmental tracers for age-dating young groundwater, in Alley, W.M., ed., Regional Ground-Water Quality: New York, Van Nostrand Reinhold, p. 255-294.
Schroeder, R.A., Martin, P., and Böhlke, J.K., 1993, Chemical, isotopic, and microbiological evidence for denitrification during transport of domestic wastewater through a thick unsaturated zone in the Mojave Desert, San Bernardino County, California: U.S. Geological Survey Open-File Report 93-414, 10p. (on-line abstract)
Sturchio, N.C., Böhlke, J.K., and Markun, F.J., 1993, Radium isotope geochemistry of thermal waters, Yellowstone National Park, Wyoming: Geochimica et Cosmochimica Acta, v. 57, p. 1203- 1214. (on-line abstract)


1994

Böhlke, J.K., and Shanks, W.C., III, 1994, O, H, and S isotope study of hydrothermal vents at Escanaba Trough, Observed and calculated effects of sediment-seawater interaction, in Morton, J.L., Zierenberg, R.A., and Reiss, C.A., eds., Geologic, Hydrothermal, and Biologic Studies at Escanaba Trough, Gorda Ridge, Offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 223-239.
Coplen, T.B., 1994, Reporting of stable hydrogen, carbon, and oxygen isotopic abundances: Pure and Applied Chemistry, v. 66, p. 273-276.
Coplen, T.B., Greenwood, N.N., and Peiser, H.S., 1994, 1993 Table of standard atomic weights abridged to five significant figures: Inorganic Chemica Acta, v. 217, p. 217-218.
Coplen, T.B., and Harper, I.T., 1994, An improved technique for the 2H/1H analysis of urines from diabetic volunteers: Biological Mass Spectrometry, v. 23, p. 437-439.
Coplen, T. B., Winograd, I. J., Landwehr, J. M., and Riggs, A. C., 1994, 500,000-Year Stable Carbon Isotopic Record From Devils Hole, Nevada: Science, v. 263, p. 261-265.
Ekwurzel, B., Schlosser, P., Smethie, W.M., Jr., Plummer, L.N., Busenberg, E., Michel, R.L., Weppernig, R., and Stute, M., 1994, dating of shallow groundwater: Comparison of the transient tracers 3H/3He, chlorofluorocarbons, and 85Kr: Water Resources Research, v. 30, no. 6, p. 1693-1708.
Evans, W.C., White, L.D., Tuttle, M.L., Kling, G.W., Tanyileke, G., and Michel, R.L., 1994, Six years of change at Lake Nyos, Cameroon, yield clues to the past and cautions for the future: Geochemistry, v. 28, pg. 139-162.
Landwehr, J.M., Winograd, I.J., and Coplen, T.B., 1994, No verification for Milankovitch: Nature, v. 368, p. 594.
Michel, R.L., Hamlin, S.N., and Phillips, S.P., 1994, Recharge rates and changes in ground-water quality in a shallow unconfined aquifer in Western San Francisco, in Hasfurther, V., and Marston, R.A., eds., Proceedings of the AWRA Symposium on Effects of Human-Induced Changes on Hydrologic Systems., p. 841-850.
Michel, R.L., and Schroeder, R.A., 1994, Use of long-term tritium records from the Colorado River to determine timescales for hydrologic processes associated with irrigation in the Imperial Valley, California: Applied Geochemistry, v. 9, p. 387-401. (on-line abstract)
Wanty, R.B., Tuttle, M.L., Böhlke, J.K., and Briggs, P.H., 1994, Chemical analyses of ground and surface water from Battle Brook drainage basin, near Princeton, Minnesota: U.S. Geological Survey Open-File Report 94-129, 26p.


1995

Böhlke, J.K., and Coplen, T.B., 1995, Interlaboratory comparison of reference materials for nitrogen-isotope-ratio measurements, in Reference and intercomparison materials for stable isotopes of light elements: Vienna, International Atomic Energy Agency, IAEA-TECDOC-825, p. 51-66.
Böhlke, J.K., and Denver, J.M., 1995, Combined use of ground-water dating, chemical and isotopic analyses to resolve the history and fate of ground-water nitrate contamination in two agricultural watersheds, Atlantic coastal plain, Maryland: Water Resources Research, v. 31, p. 2319-2339.
Coplen, T.B., 1995, New IUPAC guidelines for the reporting of stable hydrogen, carbon, and oxygen isotope-ratio data: Journal of Research of the National Institute of Standards and Technology, v. 100, p. 285.
Coplen, T.B., 1995, Discontinuance of SMOW and PDB: Nature, v. 375, p. 285.
Coplen, T.B., 1995, Reporting of stable carbon, hydrogen, and oxygen isotopic abundances, in Reference and intercomparison materials for stable isotopes of light elements: Vienna, International Atomic Energy Agency, IAEA-TECDOC-825, p. 31-34.
Coplen, T.B. and Hopple, J.A., 1995, Audit of VSMOW distributed by the United States National Institute of Standards and Technology, in Reference and intercomparison materials for stable isotopes of light elements: Vienna, International Atomic Energy Agency, IAEA-TECDOC-825, p. 35-38.
Katz, B.G., Plummer, L.N., Busenberg, E., Revesz, K., Jones, B.F., Lee, T.M., 1995, Chemical evolution of ground water near a sinkhole lake, northern Florida, 2. Chemical patterns, mass transfer modeling, and rates of mass transfer reactions: Water Resources Research, v. 31, no. 6, p. 1565-1584.
McMahon, P.B., Böhlke, J.K., and Litke, D.W., 1995, Fate of nitrate in the South Platte River alluvial aquifer system, Colorado: U.S. Geological Survey Yearbook, Fiscal Year 1994, p. 45-47.
Revesz, K., Coplen, T.B., Baedecker, M.J., Glynn, P., and Hult, M., 1995, Methane production and consumption monitored by stable hydrogen and carbon isotope ratios at Bemidji, Minnesota: Applied Geochemistry, v. 10, p. 505-516.
Shanks, W.C. III, Böhlke, J.K., and Seal, R.R.II, 1995, Stable isotopes in mid-ocean ridge hydrothermal systems: interactions between fluids, minerals and organisms: in Humphris, S.E., and others, eds., Seafloor Hydrothermal Systems: Physical, Chemical, Biological, and Geological Interactions: American Geophysical Union Monograph, v. 91, p. 194-221.


1996

Coplen, T.B., 1996, Editorial: More uncertainty than necessary: Paleoceanography, v. 11, no. 4, p. 369-370.
Coplen, T.B., 1996, Guidelines for reporting certain isotopic values relevant to ground-water studies: Ground Water, v. 34, p. 388.
Coplen, T.B., 1996, Atomic weights of the elements 1995: Pure and Applied Chemistry, v. 68, p. 2339-2359.
Coplen, T.B., 1996, New guidelines for the reporting of stable hydrogen, carbon, and oxygen isotope ratio data: Geochimica et Cosmochimica Acta, v. 60, p. 3359.
Coplen, T.B., De Bievre, P., Krouse, H.R., Vocke, R.D., Jr., Groening, M., and Rozanski, K., 1996, Ratios for light-element isotopes standardized for better interlaboratory comparison: Eos, v. 77, p. 255.
Deak, J., and Coplen, T.B., 1996, Identification of Holocene and Pleistocene groundwaters in Hungary using oxygen and hydrogen isotopic ratios, in Isotope in Water Resources Management, v. 1: Vienna, International Atomic Energy Agency, p. 438.
Deak, J., Deseo, E., Böhlke, J.K., and Revesz, K., 1996, Isotope hydrology studies in the Szigetkoz region, northwest Hungary, in Isotopes in Water Resources Management: Vienna, International Atomic Energy Agency, [Proceedings], v. 1, p. 419-432.(on-line abstract)
Deseo, E., Deak, J., Revesz, K., Böhlke, J.K., and Stute, M., 1996, Groundwater origin and dating studies in Szigetkoz: Acta Geologica Hungarica, v. 39 Supplementum (Isotope Workshop III), p. 31-34.
McMahon, P.B., and Böhlke, J.K., 1996, Denitrification and mixing in a stream/aquifer system: effect on nitrate loading to surface water: Journal of Hydrology, v. 186, p. 105-128. (on-line abstract)
Reilly, T.E., LeBlanc, D.R., Bussey, K.W., Councell, T.B., Smith, R.L., and Böhlke, J.K., 1996, Chemical and stable-isotope data from an experiment to examine temporal variability in water samples from screened wells on Cape Cod, Massachusetts, 1994: U.S. Geological Survey Open-File Report 95-734, 21 p.
Revesz, K., Coplen, T.B., Baedecker, M.J., Glynn, P.D., and Hult, M., 1996, Investigation of methane production and consumption by use of stable isotopes: Isotope in Water Resources Management, v. 1: Vienna, International Atomic Energy Agency, p. 381-387. (on-line abstract)
Revesz, K., Coplen, T., Baedecker, M.J., Hult, M. 1996, Use of Carbon and Hydrogen Stable Isotopes to Investigate the Production and Fate of Methane at a Toxic Waste Site, Bemidji, Minnesota, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program - Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water- Resources Investigations Report 94-4015, p. 653-662. (on-line abstract)
Schroeder, R.A., Martin, P., and Böhlke, J.K., 1996, Chemical, isotopic, and microbiological evidence for denitrification during transport of domestic wastewater through a thick unsaturated zone in the Mojave Desert, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program - Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water- Resources Investigations Report 94-4015, p. 917-926. (on-line abstract)
Shinn, E.A., Reich, C.D., Hickey, D.T., Böhlke, J.K., Plummer, L.N., Coplen, T.B., Busenberg, E., Chanton, J., Burnett, W., Dillon, K., and Corbett, R., 1996, Assessing the origin and fate of ground water in the Florida Keys: Florida Bay Science Conference, University of Florida IFAS, Program and Abstracts, p. 74-76.
Wanty, R.B., Tuttle, M.L., Landon, M.K., Delin, G.N., and Böhlke, J.K., 1996, Geochemistry of nitrogen in a farmed watershed near Princeton, central Minnesota, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program - Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water- Resources Investigations Report 94-4014, p. 591-596. (on-line abstract)


1997

Böhlke, J.K., Ericksen, G.E., and Revesz, K., 1997, Stable isotope evidence for an atmospheric origin of desert nitrate deposits in northern Chile and southern California, USA: Chemical Geology (Isotope Geoscience Section), v. 136, p. 135-152.
Böhlke, J.K., Plummer, L.N., Busenberg, E., Coplen, T.B., Shinn, E.A., and Schlosser, P., 1997, Origins, residence times, and nitrogen chemistry of marine ground waters beneath the Florida Keys and nearby offshore areas. 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. 6-7.
Böhlke, J.K., Revesz, K., Busenberg, E., Deak, J., Deseo, E., and Stute, M., 1997, A ground-water record of halocarbon transport by the Danube River: Environmental Science and Technology, v. 31, p. 3293-3299.
Coplen, T.B., 1997, Atomic weights of the elements 1995: Journal Physical Chemical Reference Data, v. 26, p. 1239-1253.
Coplen, T. B., 1997, A laboratory information management system (LIMS) for light stable isotopes Version 7.0: U. S. Geological Survey Open-File Report 97-812, 118 p. (on-line abstract or to obtain pdf file)
Delin, G.N., Landon, M.K., Nelson, K.J., Wanty, R.B., Healy, R.W., Olsen, H.W., Böhlke, J.K., Schroyer, B.R., and Capel, P.D., 1997, Hydrogeologic and water-quality data used to evaluate the effects of focused recharge on ground-water quality near Princeton, Minnesota, 1991-1995: U.S. Geological Survey Open-File Report 97-21, 47 p.
Katz, B. G., Coplen, T. B., Bullen, T. D., and Davis, J. H., 1997, Use of Chemical and Isotopic tracers to Characterize the Interactions Between Ground Water and Surface Water in Mantled Karst: Ground Water, v. 35, no. 6, p. 1014-1028. (on-line abstract)
Krouse, H.R., and Coplen, T.B., 1997, Reporting of relative sulfur isotope- ratio data: Pure and Applied Chemistry, v. 69, p. 293-295.
Landwehr, J.M., Coplen, T.B., Ludwig, K.R., Winograd, I.J. and Riggs, A.C., 1997, Data from Devils Hole Core DH-11: U.S. Geological Survey Open-File Report 97-792, 8 p. (on-line report)
Michel, R.L., Busenberg, E., Plummer, L.N., Izbicki, J.A., Martin, P., and Densmore, J.N., 1997, Use of tritium and chlorofluorocarbons to evaluate the rate of seawater intrusion in a coastal aquifer system, in Proceedings of the 13th Salt Water intrusion Conference, Cagliari, Italy, June, 1994, p. 113-123.
Qi, H.P., Coplen, T.B., Wang, Q.Zh., and Whang, Y.H.,1997, Unnatural isotopic composition of lithium reagents: Analytical Chemistry v. 69, p. 4076-4078.
Revesz, K., Böhlke, J.K., and Yoshinari, T., 1997, Determination of δ18O and δ15N in nitrate: Analytical Chemistry, v. 69, no. 21, p. 4375-4380.
Schroeder, R. A., Anders, R., Böhlke, J. K., Michel, R. L., and Metge, D. W., 1997, Water quality at production wells near artificial-recharge basins in Montebello Forebay, Los Angeles County, In Conjunctive Use of Water Resources: Aquifer Storage and Recovery (D. R. Kendall, editor), American Water Resources Association, Herndon, VA, TPS-97-2, p. 273-284.
Stute, M., Deak, J., Revesz, K., Böhlke, J.K., Deseo, E., Wappernig, R., and Schlosser, P., 1997, Tritium/3He dating of river infiltration: An example from the Danube in the Szigetkoz area, Hungary: Ground Water, v. 35, p. 905-911.
Winograd, I.J., Landwehr, J.M., Ludwig, K.R., Coplen, T.B., and Riggs, A.C., 1997, Duration and structure of the past four interglaciations: Quaternary Research, v. 48, p. 141-154. (on-line abstract)


1998

Carmody, R.W, Plummer, L.N., Busenberg, E., and Coplen, T.B., 1998, Methods for collection of dissolved sulfate and sulfide and analysis of their sulfur isotopic composition: U. S. Geological Survey Open-File Report 97-234, 91 p.
Coplen, T. B., 1998, A manual for a laboratory information management system (LIMS) for light stable isotopes Version 7.0: U. S. Geological Survey Open-File Report 98-284, 124 p.
Coplen, T. B., and Peiser, H. S., 1998, History of the recommended atomic-weight values from 1882 to 1997: A comparison of differences from current values to the estimated uncertainties of earlier values: Pure and Applied Chemistry, v. 70, no. 1, p. 237-257. (on-line abstract or to obtain pdf file)
Coplen, T.B., and Krouse, H.R., 1998, Sulphur isotope data consistency improved: Nature, v. 392, p. 32.
Focazio, M.J., Plummer, L.N., Böhlke, J.K., Busenburg, E., Bachman, L.J., and Powars, D.S., 1998, Preliminary estimates of residence times and apparent ages of ground water in the Chesapeake Bay watershed, and water-quality data from a survey of springs: U.S. Geological Survey Water Resources Investigations Report 97-4225, 75 p. (on-line abstract or on-line pdf file)
Hopple, J.A., Hannon, J.E., and Coplen, T.B., 1998, Comparison of two stable hydrogen isotope-ratio measurement techniques on Antarctic surface-water and ice samples: Chemical Geology, v. 152, p. 321-323. (on-line abstract)
Revesz, K., Böhlke, J.K., Yoshinari, T., 1998, δ18O and δ15N determination in nitrate: International Atomic Energy Agency, Isotope Techniques in the Study of Environmental Change, Vienna, p. 851-854.
Winograd, I.J., Riggs, A.C., and Coplen, T.B., 1998, The relative contributions of summer and cool-season precipitation to groundwater recharge, Spring Mountains, Nevada, USA: Hydrogeology Journal, v. 6, p. 77-93. (on-line abstract)


1999

Böhlke, J.K., 1999, Mother Lode gold. In: Classic Cordilleran Concepts: A view from California, in Moores, E.M., Sloan, D., and Stout, D.L., eds., Geological Society of America Special Paper 338: Geological Society of America, p. 55-67.
Böhlke, J.K., Plummer, L.N., Busenberg, E., Coplen, T.B., Shinn, E.A., and Schlosser, P., 1999, Origins, residence times, and nutrient sources of marine ground waters beneath the Florida Keys and nearby offshore areas: U.S. Geological Survey Open-File Report 99-181, p. 2-3.
Böhlke, J.K., Smith, R.L., Coplen, T.B., Busenberg, E., and LeBlanc, D.R., 1999, Recharge conditions and flow velocities of contaminated and uncontaminated ground waters at Cape Cod, Massachusetts: Evaluation of delta-2H, delta-180, and dissolved gases, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program - Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 99-4018, p. 337-348. (on-line abstract)
Carmody, R.W., and Seal II, R.R., 1999, Evaluation of the sulfur isotopic composition and homogeneity of the Soufre de Lacq reference material: Chemical Geology, v. 153, p. 289-295. (on-line abstract)
Cook, P.G., and Böhlke, J.K., 1999, Determining time scales for groundwater flow and solute transport, in Cook, P.G., and Herzeg, A., eds., Environmental Tracers in Subsurface Hydrology: Boston, Kluwer Academic Publishers, p. 1-30.
Coplen, T.B., Herczeg, A., and Barnes, C.J., 1999, Isotope engineering--using stable isotopes of the water molecule to solve practical problems, in Cook, P.G. and Herczeg, A., eds., Environmental Tracers in Subsurface: Boston, Kluwer Academic Publishers, p. 79-110.
Katz, B.G., Hornsby, H.D., and Böhlke, J.K., 1999, Sources of nitrate in water from springs and the Upper Floridan aquifer, Suwannee River basin, Florida: in Heathwaite, L., ed., Impacts of Land-Use Change on Nutrient Loads from Diffuse Sources, International Association of Hydrologic Sciences, Publication 257, p. 117-124.
Katz, B.G., Hornsby, H.D., Böhlke, J.K., and Mokray, M.F., 1999, Sources and chronology of nitrate contamination in spring waters, Suwannee River basin, Florida: U.S. Geological Survey Water Resources Investigations Report 99-4252, 54 p. (on-line abstract or to obtain pdf file)
McMahon, P.B., Böhlke, J.K., and Bruce, B.W., 1999, Denitrification in marine shales in northeastern Colorado, USA: Water Resources Research, v. 35, p. 1629-1642. (on-line abstract)
Miller, D.N., Smith, R.L., and Böhlke, J.K., 1999, Nitrification in a shallow, nitrogen-contaminated aquifer, Cape Cod, Massachusetts, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program - Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 329-336. (on-line abstract)
Peiser, H.S., and Coplen, T.B., 1999, Underestimation of uncertainty: The Chemical Intelligencer, v. 5, p. 55.
Revesz, K., Böhlke, J.K., Smith, R.L., and Yoshinari, T., 1999, Stable isotope composition of dissolved O2 undergoing respiration in a ground-water contamination gradient, in Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 323-328. (on-line abstract)
Révész, K., Böhlke, J.K., Smith, R.L., and Yoshinari, T., 1999, δ18O composition of dissolved O2 undergoing respiration in a contaminated ground water: IAEA International Symposium on Isotope Techniques in Water Resources Development and Management, Vienna, Austria, 10-14 May 1999, International Atomic Energy Agency, Vienna, CD-ROM.
Smith, R.L, Böhlke, J.K., Revesz, K., Yoshinari, T., Hatzinger, P.B., and Penarrieta, C.T., 1999, In situ assessment of the transport and microbial consumption of oxygen in ground water, Cape Cod, Massachusetts, in Morganwalp, D.W., and Aronson, D.A., eds., U.S. Geological Survey Toxic Substances Hydrology Program - Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water-Resources Investigations Report 99-4018C, p. 317-322. (on-line abstract)


2000

Böhlke, J.K., and Horan, M., 2000, Strontium isotope geochemistry of ground waters and streams affected by agriculture, Locust Grove, Maryland: Applied Geochemistry, v. 15, p. 599-609. (on-line abstract)
Coplen, T.B., 2000, Laboratory Information Management System (LIMS) for Light Stable Isotopes: U.S. Geological Survey Open-File Report 00-345, 121 p. (on-line information)
Coplen, T.B., and Huang, R., 2000, Stable hydrogen and oxygen isotope ratios for selected sites of the National Oceanic and Atmospheric Administrations Atmospheric Integrated Research Monitoring Network (AIRMoN)): U.S. Geological Survey Open-File Report 00-279, 54 p. (on-line abstract)
Coplen, T.B., and Kendall, C., 2000, Stable isotope and oxygen isotope ratios for selected sites of the U.S. Geological Survey's NASQAN and Benchmark surface-water networks: U.S. Geological Survey Open-File Report 00-160, 409 p. (on-line publication)
Delin, G.N., Healy, R.W., Landon, M.K., and Böhlke, J.K., 2000, Effects of topography and soil properties on recharge and movement of water through the unsaturated zone at two sites in an agricultural field: Journal of the American Water Resources Association, v. 36, part 6, p. 1401-1416. (on-line abstract)
Densmore, J.N., and Böhlke, J.K., 2000, Use of nitrogen isotopes to determine sources of nitrate contamination in two desert basins in California, in Reichard, E.G, Hauchman, F. S., and Sancha, A.M., eds., Interdisciplinary Perspectives on Drinking Water Risk Assessment and Management: International Association of Hydrologic Sciences Publication 260, p. 63-73. (on-line abstract)
Katz, B.G. and Böhlke, J.K., 2000, Monthly Variability and Possible Sources of Nitrate in Ground Water Beneath Mixed Agricultural Land Use, Suwannee and Lafayette Counties, Florida: U.S. Geological Survey Water-Resources Investigations Report 00-4219, 28 p. (on-line abstract and to download pdf file)
Plummer, L.N., Busenberg, E., Böhlke, J.K., Carmody, R.W., Casile, G.C., Coplen, T.B., Doughten, M.W., Hannon, J.E., Kirkland, W., Michel, R.L., Nelms, D.L., Norton, B.C., Plummer, K.E., Qi, H., Revesz, K., Schlosser, P., Spitzer, S., Wayland, J.E. and Widman, P.K., 2000, Chemical and isotopic composition of water from springs, wells, and streams in parts of Shenandoah National Park, Virginia, and vicinity, 1995-1999: U.S. Geological Survey Open-File Report 00-373, 70 p. (on-line abstract)
Pomes, M.L., Larive, C.K., Thurman, E.M., Green, W.R., Orem, W.H., Rostad, C.E., Coplen, T.B., Cutak, B.J., and Dixon, A.M., 2000,Humic substances in the Wakarusa River and Clinton Lake near Lawrence, Kansas: Environmental Science and Technology, vol. 34, p. 4278-4286. (on-line abstract)
Verstraeten, I.M., Böhlke, J.K., and Kraemer, T.F., 2000, Groundwater/ surface-water interactions and sources of nitrogen, radon, and uranium in a irrigated alluvial aquifer, Nebraska, USA: Tracers and Modeling in Hydrogeology, International Association of Hydrologic Sciences Publication 262, p. 525-531. (on-line abstract)


2001

Becker, M.W., and Coplen, T.B., 2001, Deuterated water as a conservative artificial ground-water tracer: Hydrogeology Journal, vol. 9 , p. 512-516. (on-line abstract and article)
Brand, W.A., and Coplen, T.B., 2001, An interlaboratory study to test instrument performance of hydrogen dual-inlet isotope-ratio mass spectrometers, Fresenius' Journal of Analytical Chemistry, vol. 370, p. 358-362. (on-line abstract)
Coplen, T.B., 2001, Atomic weights of the elements 1999: Pure and Applied Chemistry, v. 73, no. 4, p. 667-683. (on-line abstract or to download pdf file)
Coplen, T.B., 2001, Atomic weights of the elements 1999: Journal of Physical and Chemical Reference Data, v. 30, p. 701-712. (on-line abstract).
Katz, B.G., Böhlke, J.K., and Hornsby, H.D., 2001, Timescales for nitrate contamination of spring waters, northern Florida, USA: Chemical Geology, v. 179, p. 167-186. (on-line abstract)
Kendall. C., and Coplen, T.B., 2001, Distribution of oxygen-18 and deuterium in river waters across the United States: Hydrological Processes, v. 15, no. 7, p. 1363-1393. (on-line abstract)(download pdf file)
McMahon, P.B., and Böhlke, J.K., 2001, Radiocarbon ages, paleorecharge conditions, and nitrogen transport in the central High Plains Aquifer, 4th International Symposium on Applied Isotope Geochemistry, Pacific Grove, CA, June 2001: Program and Abstracts, p. 42-44.
Plummer, L.N., Busenberg, E., Böhlke, J.K., Nelms, D.L., Michel, R.L., and Schlosser, P., 2001, Groundwater residence times in Shenandoah National Park, Blue Ridge Mountains, Virginia, USA: A Multi-Tracer Approach: Chemical Geology, v. 179, p. 93-111. (on-line abstract)
Révész, K., Böhlke, J.K., Smith, R.L., and Yoshinari, T., in press, Oxygen respiration in Ground-Water Monitored by δ18O measurements of dissolved 02 using Continuous Flow Isotope Ratio Mass Spectrometry, V Isotope Workshop, organized by the European Society of Isotope Research, Krakow, Poland, July 1-6, 2000, [Proceedings].
Revesz, K.M., Landwehr, J.M., Keybl, J., 2001, Measurement of δ13C and δ18O Isotopic Ratios of CaCO3 using a Thermoquest Finnigan GasBench II Delta Plus XL Continuous Flow Isotope Ratio Mass Spectrometer with Application to Devils Hole Core DH-11 Calcite: U.S. Geological Survey Open-File-Report 01-257, 17 pgs. (on-line report)
Sanford, W.E., Revesz, K., and Deak, J., 2001, Inverse modeling using 14C ages: Application to groundwater in the Danube-Tisza interfluvial region of Hungary, in Seiler, K.P. and Wohnlich, S., eds., New Approaches Characterizing Groundwater Flow, Proceedings of the XXXI International Association of Hydrogeologists Congress, Munich, Germany, September 2001: A.A. Balkema, p. 401-404.
Sigman, D.M., Casciotti, K.L., Andreani, M.C. Barford, C., Galanter, M., and Böhlke, J.K., 2001, A bacterial method for the nitrogen isotopic analysis of nitrate in seawater and freshwater: Analytical Chemistry, vol. 73, p. 4145-4153. (on-line abstract)
Verstraeten, I.M., Steele, G.V., Böhlke, J.K., Kraemer, T.F., Wilson, K.E., and Carnes, A.E., 2001, Selected field and analytical methods and analytical results in the Dutch Flats area, western Nebraska: 1995-99, U.S. Geological Survey Open-File Report 00-413, 53 p.
Verstraeten, I.M., Böhlke, J.K., Kraemer, T.F. ,and Cannia, J., 2001, Use of environmental tracers and isotopes to evaluate sources of water, nitrate, and uranium in an irrigated alluvial valley, Nebraska: U.S. Geological Survey Fact Sheet 100-01.
Verstraeten, I.M., Steele, G.V., Cannia, J.C., Hitch, D.E., Scripter, K.G., Böhlke, J.K., Kraemer, T.F., and Stanton, J.S., 2001, Interaction of surface water and ground water in the Dutch Flats area, western Nebraska: 1995-99, U.S. Geological Survey Water-Resources Investigations Report 01-4070, 56 p.


2002

Bachman, L.J., Krantz, D.E., and Böhlke, J.K., 2002, Hydrogeologic framework, ground-water geochemistry, and assessment of nitrogen yield from base flow in two agricultural watersheds, Kent County, Maryland: U.S. Environmental Protection Agency, EPA/600/R-2/008, 93 p. (on-line report in pdf format)
Barlow, R.A., Brakebill, J.W., Bratton, J.F., Blazer, V.S., Böhlke, J.K., 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. (on-line report)
Böhlke, J. K., 2002, Groundwater recharge and agricultural contamination- Erratum: Hydrogeology Journal, v. 10, p. 438-439.
Böhlke, J.K., 2002, Groundwater recharge and agricultural contamination: Hydrogeology Journal, v. 10, p. 153-179. (on-line abstract)
Böhlke, J.K., Wanty, R., Tuttle, M., Delin, G. ,and Landon, M., 2002, Denitrification in the recharge area and discharge area of a transient agricultural nitrate plume in a glacial outwash sand aquifer, Minnesota: Water Resources Research, vol. 38, no. 7, p. 10.1 - 10.26. (on-line abstract)
Casciotti, K.L., Sigman, D.M., Hastings, M.G., Böhlke, J.K., and Hilkert, A., 2002, Measurement of the oxygen isotopic composition of nitrate in seawater and freshwater using the denitrifier method: Analytical Chemistry, v. 74, p. 4905-4912. (on-line abstract)
Cook, P.G., Böhlke, J.K., and Solomon, D.K., 2002, Measuring groundwater recharge and discharge using environmental tracers: Balancing the Groundwater Budget - Proceedings of the International Association of Hydrogeologists, Groundwater Conference, Darwin 12-17, May 2002, International Association of Hydrogeologists, 13 p. (compact disc).
Coplen, T.B., Böhlke, J.K., De Bievre, P., Ding, T., Holden, N.E., Hopple, J.A., Krouse, .R., Lamberty, A., Peiser, H.S., Revesz, K.M., Rieder, S.E., Rosman, K.J.R., Roth, E., Taylor, P.D.P., Vocke, Jr., R.D., and Xiao, Y.K., 2002, Isotopic abundance variations of selected elements: Pure and Applied Chemistry, vol. 74, p. 1987-2017. (on-line abstract)
Coplen, T.B., Hopple, J.A., Böhlke, J.K., Peiser, H.S., Rieder, S.E., Krouse, H.R., Rosman, K.J.R., Ding, T., Vocke, Jr., R.D., Révész, K.M., Lamberty, A., Taylor, P., and De Bièvre, P., 2002, Compilation of minimum and maximum isotope ratios of selected elements in naturally occurring terrestrial materials and reagents: U.S. Geological Survey Water-Resources Investigations Report 01-4222, 98 p. (Request a reprint), (on-line abstract)
Michalski, G., Savarino, J., Böhlke, J.K., and Theimens, M., 2002, Determination of the total oxygen isotopic composition of nitrate and the calibration of a δ17O nitrate reference material: Analytical Chemistry, v. 74, p. 4989-4993.
Révész, K., and Böhlke, J.K., 2002, Comparison of δ18O measurements in nitrate by different combustion techniques: Analytical Chemistry, v. 74, p. 5410-5413. (on-line report in pdf format)
Revesz, K.M., and Landwehr, J.M., 2002, δ13C and δ18O isotopic composition of CaCO3 measured by continuous flow isotope ratio mass spectrometry: statistical evaluation and verification by application to Devils Hole core DH-11 calcite: Rapid Communications in Mass Spectrometry, v. 16, p. 2102-2114. (on-line abstract), (on-line report in pdf format)
Sanford, D.E., Deak, J., and Revesz, K., 2002, Parameter estimation using carbon-14 ages: Lessons from the Danube-Tisza interfluvial region of Hungary, in Korvar, K. and Hrkal, Z., eds. ModelCARE 2002, Proceedings of the 4th International Conference on Calibration and Reliability in Groundwater Modeling, Prague, Czech Republic, 17-20 June 2002,:Acta Universitatis Carolinae - Geologica 2002, v. 46, no. 2/3, p. 373-376.


2003

Böhlke, J. K., 2003, Sources, transport, and reaction of nitrate in ground water, in Lindsey, B. D., and others, Residence times and nitrate transport in ground water discharging to streams in the Chesapeake Bay Watershed: U.S. Geological Survey Water Resources Investigations Report 03-4035, p. 25-39.
Böhlke, J. K., and Krantz, D. E., 2003, Isotope geochemistry and chronology of offshore ground water beneath Indian River Bay, Delaware: U.S. Geological Survey Water-Resources Investigations Report 03-4192, 37 p. (on-line report in pdf format)
Böhlke, J.K., Mroczkowski, S.J., and Coplen, T.B., 2003, Oxygen isotopes in nitrate: new reference materials For 18O:17O:16O measurements and observations on nitrate-water equilibration: Rapid Communications in Mass Spectrometry, vol. 17, p. 1835-1846. (on-line abstract)
Coplen, T. B., 2003, Erratum: "Atomic Weights of the Elements 1999" [Journal of Physical and Chemical Reference Data 30, 701 (2001)]: Journal of Physical and Chemical Reference Data, vol. 32, p. 919.
de Laeter, J.R., Böhlke, J.K., Bievre, P. de, Hidaka, H., Peiser, H.S., Rosman, K.J.R., and Taylor, P.D.P., 2003, Atomic weights of the elements: Review 2000 (IUPAC Technical Report): Pure and Applied Chemistry, vol. 75, no. 6, p. 683-800. (on-line abstract)
de Laeter, J.R., and Peiser, H.S., 2003, A Century of Progress in the Sciences due to Atomic Weight and Isotopic Composition Measurements, Analytical and Bioanalytical Chemistry, vol. 375, p. 62-72. (on-line abstract)
Griggs, E.M., Kump, L.R., Böhlke, J.K., 2003, The fate of wastewater-derived nitrate in the subsurface of the Florida Keys: Key Colony Beach, Florida: Estuarine, Coastal and Shelf Science, vol. 58, no. 3, p. 517-539. (on-line abstract)
Lindsey, B.D., Phillips, S.W., Donnelly, C.A., Speiran, G.K., Plummer, L.N., Böhlke, J.K., Focazio, M.J.,. Burton, W.C., and Busenberg, E., 2003, Residence Times and Nitrate Transport in Ground Water Discharging to Streams in the Chesapeake Bay Watershed: U. S. Geological Survey Water-Resources Investigations Report 03-4035, 201 p. (on-line report in pdf format)
Plummer, L. N., Böhlke, J. K., and Busenberg, E., 2003, Approaches for ground-water dating, in Lindsey, B. D., and others, Residence times and nitrate transport in ground water discharging to streams of the Chesapeake Bay Watershed, U.S. Geological Survey Water-Resources Investigations Report 03-4035, p. 12-24.
Qi, H.P., and Coplen, Tyler B., 2003, Evaluation of the 34S/32S ratio of Soufre de Lacq elemental sulfur isotopic reference material by continuous flow isotope-ratio mass spectrometry: Chemical Geology, v. 199, p. 183-187. (on-line abstract)
Qi, H., Coplen, T.B., Geilmann, H., Brand, W.A., and Böhlke, J.K., 2003, Two new organic reference materials for δ13C and δ15N measurements and a new value for the δ13C of NBS 22 oil: Rapid Communications in Mass Spectrometry, vol. 17, no. 22, p. 2483-2487. (on-line abstract)


2004

Böhlke, J. K., Harvey, J. W., and Voytek, M. A., 2004, Reach-scale isotope tracer experiment to quantify denitrification and related processes in a nitrate-rich stream in an agricultural watershed, mid-continent USA: Limnology and Oceanography, v. 49, p. 821-838. (on-line abstract or on-line report in pdf format)
Böhlke, J. K., Mroczkowski, S. J., and Coplen, T. B., 2004, New reference materials for oxygen isotopes in nitrate: Isotope Hydrology and Integrated Water Resources Management, IAEA-CSP-23, International Atomic Energy Agency, Vienna, p. 477-478.
Bratton, J.F., Böhlke, J.K., Manheim, F.T., Krantz , D.E., 2004, Ground water beneath coastal bays of the Delmarva Peninsula: Ages and Nutrients: Ground Water, vol. 42, no. 7, p. 1021-1034. (on-line abstract)
Coplen, T.B., Böhlke, J.K., and Casciotti, K., 2004, Using dual-bacterial denitrification to improve δ15N determinations of nitrates containing mass-independent 17O: Rapid Communications in Mass Spectrometry, v. 18, p. 245-250. (on-line abstract)
Landwehr, J. M., and Coplen, T. B., 2004, The oxygen and hydrogen ratios in waters from the largest river systems of the United States: Isotope Hydrology and Integrated Water Resources Management, IAEA-CSP-23, International Atomic Energy Agency, Vienna, p. 402-403.
McMahon, P. B., Böhlke, J. K., and Christenson, S. C., 2004, Geochemistry, radiocarbon ages, and paleorecharge conditions along a transect in the central High Plains aquifer, southwestern Kansas, USA: Applied Geochemistry, vol. 19, p. 1655-1686. (on-line abstract)
McMahon, P.B., Böhlke, J.K, and Lehman, T.M., 2004, Vertical gradients in water chemistry and age in the southern High Plains Aquifer, Texas, 2002: U.S. Geological Survey Scientific Investigations Report 2004-5053, 53 p. (on-line abstract and on-line report in pdf format, 2.46 MB)
Michalski, G., Böhlke, J.K., and Thiemens, M.H., 2004, Long term atmospheric deposition as the source of nitrate and other salts in the Atacama Desert, Chile: New evidence from mass-independent oxygen isotopic compositions, Geochimica et Cosmochimica Acta, vol. 68, no. 20, p. 4023-4038. (on-line abstract)
Oren, O., Yechieli, Y., Böhlke, J.K., Dody, A., 2004, Contamination of groundwater under cultivated fields in an arid environment, central Arava Valley, Israel: Journal of Hydrology, vol. 290, no. 3-4, p. 312-328 (on-line abstract)
Revesz, K., and Landwehr, J. M., 2004, Measurement of δ13C and δ18O isotopic ratios of CaCO3 by Thermoquest-Finnigan GasBench II and Delta Plus XL continuous flow isotope ratio mass spectrometer with application to Devils Hole Core DH-11 calcite: Isotope Hydrology and Integrated Water Resources Management, IAEA-CSP-23, International Atomic Energy Agency, Vienna, p. 485.
Smith, R.L., Böhlke, J.K., Garabedian, S.P., Revesz, K.M., and Yoshinari, T., 2004, Assessing denitrification in groundwater using natural gradient tracer tests with 15N: In situ measurement of a sequential multistep reaction, Water Resources Research, vol. 40, 17 p., W07101, doi: 10.1029 /2003WR002919. (on-line abstract)


2005

Hunt, R.J., Coplen, T.B., Haas, N.L., Saad, D.A., and Borchardt, M.A., 2005, Investigating surface water-well interaction using stable isotope ratios of water: Journal of Hydrology, v. 302, no. 1-4, p. 154-172.
Vogel, J.R., Barber, L.B., Furlong, E.T., Coplen, T.B., Verstraeten, I.M., and Meyer, M.T., 2005, Occurrence of selected pharmaceutical and non-pharmaceutical compounds and stable hydrogen and oxygen isotope ratios in a riverbank filtration study, Platte River, Nebraska, 2001 to 2003, Volume 2: U.S. Geological Survey Data Series 141.
Vogel, J.R., Harris, S.I., Coplen, T.B., Rice, E.W., and Verstraeten, I.M., 2005, Microbe concentrations, laser particle counts, and stable hydrogen and oxygen isotope ratios in samples from a riverbank filtration study, Platte River, Nebraska, 2002 to 2004: U.S. Geological Survey Data Series 133, p. 307-321.
Vogel, J.R., Verstraeten, I.M., Coplen, T.B., Furlong, E.T., Meyer, M.T., and Barber, L.B., 2005, Occurrence of selected pharmaceutical and non-pharmaceutical compounds and stable hydrogen and oxygen isotope ratios in a riverbank filtration study, Platte River, Nebraska, 2001 to 2003, Volume 1: U.S. Geological Survey Data Series 117.
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. 7,838 -7,842. (on-line abstract of journal article)
Hunt, R.J., Coplen, T.B., Haas, N.L., Saad, D.A., and Borchardt, M.A., 2005, Investigating surface water-well interaction using stable isotope ratios of water: Journal of Hydrology, v. 302, no. 1-4, p. 154-172.


2006

Böhlke, J. K., 2006, Tracermodel1- Excel workbook for calculation and presentation of environmental tracer data for simple groundwater mixtures: Use of chlorofluorocarbons in hydrology: a guidebook, Section III.10.3, Vienna, International Atomic Energy Agency STI/PUB/1238, p. 239-243.
Böhlke, J.K., Smith, R.L., and Miller, D.N., 2006, Ammonium transport and reaction in contaminated groundwater - Application of isotope tracers and isotope fractionation studies: Water Resources Research, 42, W05411, doi:10.1029/2005WR004349. (on-line abstract or on-line report in pdf format, 1852 kb, published 2006 by American Geophysical Union, not subject to U.S. copyright)
Böhlke, J.K., Verstraeten, I.M. and Kraemer, T.F., in press, Effects of surface-water irrigation on the sources and movement of water, nitrate, and uranium in an alluvial aquifer. Applied Geochemistry.
Coplen, T.B., Brand, W.A., Gehre, M., Gröning, M., Meijer, H.A.J., Toman, B., and Verkouteren, R.M., 2006, New guidelines for δ13C measurements: Analytical Chemistry, vol. 78, p. 2439-2441. (on-line abstract)
Coplen, T.B., Brand, W.A., Gehre, M., Gröning, M., Meijer, H.A.J., Toman, B., and Verkouteren, R.M., 2006, After two decades a second anchor for the VPDB the δ13C scale: Rapid Communications in Mass Spectrometry, vol. 20, no. 21, p. 3165-3166. (on-line report in pdf format, 121 kb, published on-line in 2006 by John Wiley & Sons as a U.S. government work in the public domain)
Evans, W.C., Bergfeld, D., van Soest, M.C., Huebner, M.A., Fitzpatrick, J., and Révész, K.M., 2006, Geochemistry of low-temperature springs northwest of Yellowstone caldera: Seeking the link between seismicity, deformation, and fluid flow: Journal of Volcanology and Geothermal Research, vol. 154, p. 169 – 180, doi:10.1016/j.jvolgeores.2006.01.001. (on-line abstract)
Goode, D. J., Tiedeman, C. R., Imbrigiotta, T. E., Lacombe, P. J., Best, E. W. , Chapelle, F. H., Bradley, P. M., Shapiro, A. M., Révész, K. M., Johnson, C. D., Williams, J. H., and Dale, J. M., 2006, Distribution and natural attenuation of TCE in fractured sedimentary rocks of the Newark Basin, NAWC West Trenton, New Jersey, NGWA focus conference on eastern regional, ground water issues including fractured rock, Portland, Maine, September 18-19, 2006.
Groffman, P.M., Altabet, M.A., Böhlke, J.K., Butterbach-Bahl, K., David, M.B., Giblin, A.E., Kana, T.M., Nielsen, L.P., Firestone, M.K., and Voytek, M.A., in press, Diverse approaches to a difficult problem: Methods for measuring denitrification: Ecological Applications.
Landwehr, J.M. and Coplen, T.B., 2006, Line-conditioned excess: a new method for characterizing stable hydrogen and oxygen isotope ratios in hydrologic systems, in Isotopes in Environmental Studies, Aquatic Forum 2004: International Atomic Energy Agency, Vienna, Austria, IAEA-CSP-26, p. 132-135.
McMahon, P.B., and Böhlke, J.K., 2006, Regional patterns in the isotopic composition of natural and anthropogenic nitrate in groundwater, High Plains, United States: Environmental Science & Technology, vol. 40, p. 2965-2970. (on-line abstract or on-line journal article in pdf format, 180 KB, published 2006 by American Geophysical Union, not subject to U.S. copyright)
McMahon, P.B., Dennehy, K.F., Bruce, B.W., Böhlke, J.K, Michel, R.L., Gurdak, J.J., and Hurlbut, D.B., 2006, Storage and transit time of chemicals in thick unsaturated zones under rangeland and irrigated cropland, High Plains, United States: Water Resources Research, vol. 42, W03413, doi:10.1029/2005WR004417. (on-line abstract)
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, vol. 40, no. 6, p. 1757-1763. (on-line abstract or on-line report in pdf format, 409 KB, published 2006 by American Geophysical Union, not subject to U.S. copyright)
Révész, K., and Qi, H., 2006, Determination of the δ(15N/14N) and δ(13C/12C) of Total N and C in Solids: RSIL Lab Code 1832, chap. C5 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, book 10, sec. C, chap. 5, 31 p.
Révész, K., and Qi, H., 2006, Determination of the δ(15N/14N) of Total Nitrogen in Solids: RSIL Lab Code 2893, chap. C11 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, book 10, sec. C, chap. 11, 31 p.
Révész, K., and Qi, H., in press, Determination of δ(34S/32S) of Low Concentration Sulfate in Water, RSIL Lab Code 1949, in Révész, K., and Coplen, T.B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia: U.S. Geological Survey Techniques and Methods, book 10, chap. C8, 44 p. (on-line report in pdf format)
Révész, K., and Qi, H., 2006, Determination of the δ(34S/32S) of Sulfate in Water: RSIL lab code 1951, chap. C10 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, book 10, sec. C, chap. 10, 33 p. (on-line report)
Révész, K., and Qi, H., 2006, Determination of the δ(34S/32S) of Total Sulfur in Solids: RSIL Lab Code 1800, chap. C4 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, book 10, sec. C, chap. 4, 31 p.
Seitzinger, S., Harrison, J.A., Böhlke, J.K., Bouwman, A.F., Lowrance, R., Peterson, B., Tobias, C., and Van Drecht, G., 2006, Denitrification across landscapes and waterscapes: A synthesis: Ecological Applications, vol. 16, p. 2064–2090. (on-line abstract)
Smith, R.L., Baumgartner, L.K., Miller, D.N., Repert, D.A., and Böhlke, J.K., 2006, Assessment of nitrification potential in ground water using short-tem single-well injection experiments: Microbial Ecology, vol. 51, no. 1, p. 22-35. (on-line abstract)
Smith, L.K., Voytek, M.A., Böhlke, J. K., and Harvey, J.W., 2006, Denitrification in nitrate-rich streams: application of N2:Ar and 15N-tracer methods in intact cores: Ecological Applications, vol. 16, p. 2191-2207. (on-line abstract)
Sturchio, N.C., Böhlke, J.K., Gu, B., Horita, J., Brown, G.M., Beloso, A. Jr., Patterson, L.J., Hatzinger, P.B., Jackson, W.A. and Batista, J.R., 2006, Stable isotopic composition of chlorine and oxygen in synthetic and natural perchlorate, Chapter 5 , in Gu, B. and Coates, J.D., eds., Perchlorate: Environmental Occurrence, Interactions and Treatment: New York, Springer, p. 93-109.
Tiedeman, C., Bradley, P., Chapelle, F., Goode, D., Imbrigiotta, T., Johnson, C., Lacombe, P., Révész, K., Shapiro, A., Williams, J., and Dale, J., 2006, Transport and attenuation study of TCE, DCE, and VC in dipping fractured sedimentary rock, Battelle Conference: Remediation of chlorinated and recalcitrant compounds: The fifth international conference, May 22-25, 2006, Monterey, California.
McMahon, P.B., and Böhlke, J.K., 2006, Regional patterns in the isotopic composition of natural and anthropogenic nitrate in groundwater, High Plains, USA: Environmental Science and Technology, v. 40, p. 2965-2970.
Seitzinger, S.P., Harrison, J., Böhlke, J. K., Bouwman, A.F., Lowrance, R.R., Peterson, B.J., Tobias, C.R., and van Drecht, G., 2006, Denitrification across landscapes and waterscapes: a synthesis: Ecological Applications, v. 16, p. 2064-2090.


2007

Böhlke, J.K, O'Connell, M.E., and Prestegaard, K.L., 2007, Ground water stratification and delivery of nitrate to an incised stream under varying flow conditions: Journal of Environmental Quality, vol. 36, p. 664-680. (on-line abstract of journal article)

Böhlke, J.K., Smith, R.L., and Hannon, J.E., 2007, Analysis of N and O isotopes in nitrite and nitrate by sequential selective bacterial reduction to N2O: Analytical Chemistry, vol. 79, no. 15, p. 5888-5895. (on-line abstract or on-line article in pdf format, 149 KB, published by American Chemical Society; not subject to U.S. copyright)

Böhlke, J.K., Verstraeten, I.M., and Kraemer, T.F., 2007, Effects of surface-water irrigation on the sources, fluxes, and residence times of water, nitrate, and uranium in an alluvial aquifer: Applied Geochemistry, vol. 22, no. 1, p. 152-174. (on-line abstract of journal article)

Breen, K. J., Révész, K., Baldassare, F. J. , and McAuley1, S. D., 2007, Natural Gases in Ground Water near Tioga Junction, Tioga County, Northcentral Pennsylvania - Occurrence and Use of Isotopes to Determine Origins, 2005: U.S. Geological Survey Scientific Investigations Report Series 2007-5085, 65 p. (on-line abstract or on-line report in pdf format, 10.2 MB)

Casciotti, K.L., Böhlke, J.K., McIlvin, M.R., Mroczkowski, S.J., and Hannon, J.E., 2007, Oxygen isotopes in nitrite: analysis, calibration, and equilibration: Analytical Chemistry, vol. 79, no. 6, p. 2427-2436. (on-line abstract of journal article)

Coplen, T.B., 2007, Calibration of the calcite–water oxygen-isotope geothermometer at Devils Hole, Nevada, a natural laboratory: Geochimica et Cosmochimica Acta, vol. 71, no. 16, p. 3948-3957. (on-line abstract of journal article)

Green, C.T., Puckett, L.J., Böhlke, J.K., Bekins, B.A., Phillips, S.P., Kauffman, L.J., Denver, J.M., and Johnson, H.M., in press, Limited occurrence of denitrification in four shallow aquifers in agricultural areas of the United States: Journal of Environmental Quality.

Groffman, P.M., Altabet, M.A., Böhlke, J.K., Butterbach-Bahl, K., David, M.B., Giblin, A.E., Kana, T.M., Nielsen, L.P., Firestone, M.K., and Voytek, M.A., in press, Methods for measuring denitrification: Diverse approaches to a difficult problem: Ecological Applications, vol. 16, p. 2091-2122.

Hinkle, S.R., Böhlke, J.K., Duff, J.D., Morgan, D.S., and Weick, R.J., 2007, Aquifer-scale controls on the distribution of nitrate and ammonium in ground water near La Pine, Oregon, USA: Journal of Hydrology, vol. 333, p. 486-503. (on-line abstract of journal article)

McMahon, P.B., Böhlke, J.K., and Carney, C.P., 2007, Vertical Gradients in Water Chemistry and Age in the Northern High Plains Aquifer, Nebraska, 2003, U.S. Geological Survey Scientific Investigations Report 2006-5294, 58 p. (on-line abstract or on-line report in pdf format, 4.5 MB)

Révész, K., and Casciotti, K., 2007, Determination of the δ(15N/14N) of Nitrate in Solids: RSIL Lab Code 2894, chap. C12 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, book 10, sec. C, chap. 12, 24 p. (on-line abstract or on-line chapter in pdf format, 495 KB)

Révész, K., and Casciotti, K., 2007, Determination of the δ(15N/14N) and δ(18O/16O) of Nitrate in Solids: RSIL Lab Code 2897, chap. C14 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, book 10, sec. C, chap. 14, 24 p. (on-line abstract or on-line chapter in pdf format, 475 KB)

Révész, K., and Casciotti, K., 2007, Determination of the δ(15N/14N) of Nitrate in Water: RSIL Lab Code 2899, chap. C16 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, book 10, sec. C, chap. 16, 24 p. (on-line abstract or on-line chapter in pdf format, 629 KB)

Révész, K., and Casciotti, K., 2007. Determination of the δ(15N/14N) and δ(18O/16O) of Nitrate in Water: RSIL Lab Code 2900,chap. C17 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, book 10, sec. C, chap. 17, 24 p.

Sturchio, N.C., Böhlke, J.K., Beloso, A.D., Jr., Streger, S.H., Heraty, L.J., and Hatzinger, P.B., 2007, Oxygen and chlorine isotopic fractionation during perchlorate biodegradation: laboratory results and implications for forensics and natural attenuation studies: Environmental Science and Technology, vol. 41, p. 2796-2802. (on-line abstract of journal article)

Tobias, C.R., Böhlke, J.K., and Harvey, J.W., 2007, The oxygen-18 isotope approach for measuring aquatic metabolism in high-productivity waters: Limnology and Oceanography, vol. 52, p. 1439-1453. (on-line abstract or on-line journal article in pdf format, 1217 KB - published by the American Society of Limnology and Oceanography with open access)



2008

Campbell, D.H., Nanus, L., Böhlke, J.K., Harlin, K., and Collett, J., 2008, Nitrogen saturation in the Rocky Mountains: Linking emissions, deposition, and ecosystem effects using stable isotopes of nitrogen compounds: Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA 3, p. 2138-2144.
Coplen, T. B., Neiman, P.J., White, A.B., Landwehr, J.M., Ralph, F.M., and Dettinger, M.D., 2008, Extreme changes in stable hydrogen isotopes and precipitation characteristics in a landfalling Pacific storm: Geophysical Research Letters, v. 35, L21808, doi:10.1029/2008GL035481. (on-line abstract or on-line report in pdf format, 636 KB, published by American Geophysical Union, not subject to U.S. copyright)
Gates, J.B., Edmunds, W.M., and Böhlke, J.K., 2008, Ecohydrological factors affecting nitrate concentrations in a phreatic desert aquifer in Northwest China: Environmental Science & Technology, v. 42, p. 3531 - 3537. (on-line abstract)
Green, C.T., Puckett, L.J., Böhlke, J.K., Bekins, B.A., Phillips, S.P., Kauffman, L.J., Denver, J.M., and Johnson, H.M., 2008, Limited occurrence of denitrification in four shallow aquifers in agricultural areas of the United States: Journal of Environmental Quality, v. 37, p. 994-1009. (on-line abstract)
Hannon, J.E., and Böhlke, J.K., 2008, Determination of the δ(15N/14N) of ammonium (NH4+) in water: RSIL Lab Code 2898, in Révész, K., and Coplen, T. B., eds., Methods of the Reston Stable Isotope Laboratory: U.S. Geological Survey Techniques and Methods, book 10 chap C15, 30 p. (on-line abstract or on-line report in pdf format, 711 KB)
Hannon, J.E., Böhlke, J.K., and Mroczkowski, S.J., 2008, Effects of nitrate and water on the oxygen isotopic analysis of barium sulfate precipitated from solution: Rapid Communications in Mass Spectrometry, v. 22, p. 4109-4120. (on-line abstract or on-line report in pdf format, 305 KB, published by John Wiley & Sons, Ltd as a U.S. Government work in the public domain)
Hinkle, S.R. , Böhlke, J.K., and Fisher, L.H., 2008, Mass balance and isotope effects during nitrogen transport through septic tank systems with packed-bed (sand) filters: Science of the Total Environment, v. 407, p. 324-332. (on-line abstract of journal article)
McMahon, P.B., Böhlke, J.K., Kauffman, L.J., Kipp, K.L., Landon, M.K., Crandall, C.A., Burow, K.R., and Brown, C.J., 2008, Source and transport controls on the movement of nitrate to public supply wells in selected principal aquifers of the United State, Water Resources Research, v. 44, W04401, doi:10.1029/2007WR006252. (on-line abstract or on-line report in pdf format, 1157 KB, published by the American Geophysical Union, not subject to U.S. copyright)
McMahon, P.B., Burow, K.R., Kauffman, L.J., Eberts, S.M., Böhlke, J.K., and Gurdak, J.J., 2008, Simulated response of water quality in public-supply wells to land-use change: Water Resources Research, v. 44, p. 1-16, W00A06, doi:10.1029/2007WR006731. (on-line abstract or on-line report in pdf format, 895 KB, published by the American Geophysical Union, not subject to U.S. copyright)
Révész, Kinga, and Coplen, T. B., 2008, Determination of the δ(18O/16O) of Water: RSIL Lab Code 489, in Révész, Kinga, and Coplen, T.B., eds., Methods of the Reston Stable Isotope Laboratory: U.S. Geological Survey Techniques and Methods, book 10, chapt. C2, 28 p.


2009

Alexander, R.B., Böhlke, J.K., Boyer, E.W., David, M.B., Harvey, J.W., Mulholland, P.J., Seitzinger, S.P., Tobias, C.R., Tonitto, C., Wollheim, W.M., 2009, Dynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes: Biogeochemistry, v. 93, p. 91-116. (on-line abstract or on-line report in pdf format, 850 KB, published at Springerlink.com with open access)
Böhlke, J.K., Antweiler, R.C., Harvey, J.W., Laursen, A.E., Smith, L.K., Smith, R.L., and Voytek, M.A., 2009, Multi-scale measurements and modeling of denitrification in streams with varying flow and nitrate concentration in the upper Mississippi River basin, USA: Biogeochemistry, v. 93, p. 117-141. (on-line abstract or on-line report in pdf format, 959 KB, published at Springerlink.com with open access)
Böhlke, J.K., and Michel, R.L., 2009, Contrasting residence times and fluxes of water and sulfate in two small forested watersheds in Virginia, USA: Science of the Total Environment, v. 407, no. 14, p. 4363-4377. (on-line abstract)
Brand, W.A., Coplen, T.B., Aerts-Bijma, A.T.A., Böhlke, J.K., Gehre, M., Geilman, H., Gröning, M., Jansen, H.G., Meijer, H.A.J., Mroczkowski, S.J., Qi, H., Soergel, K., Stuart-Williams, H., Weise, S.M., and Werner, R.A., 2009, Comprehensive inter-laboratory calibration of reference materials for δ18O versus VSMOW using various on-line high-temperature conversion techniques, Rapid Communications in Mass Spectrometry, v. 23, no. 7, p. 999-1019. (on-line abstract)
Bratton, J.F., Böhlke, J.K., Krantz, D.E., and Tobias, C.R., 2009, Flow and Geochemistry of Groundwater Beneath a Back-Barrier Lagoon: The Subterranean Estuary at Chincoteague Bay, Maryland, Marine Chemistry, v. 113, p. 78-92. (on-line abstract)
Hatzinger, P., Böhlke, J.K., Sturchio, N.C., Gu, B., Heraty, L.J., and Borden, R.C., 2009, Fractionation of stable isotopes in perchlorate and nitrate during in situ biodegradation in a sandy aquifer, Environmental Chemistry, v. 6, p. 44-52. (on-line abstract)
Lorah, M.M., Cozzarelli, I.M., and Böhlke, J.K., 2009, Biogeochemistry at a wetland sediment-alluvial aquifer interface in a landfill leachate plume: Journal of Contaminant Hydrology, v. 105, no. 3-4, p. 99-117. (on-line abstract)
Tobias, C.R., Böhlke, J.K., Harvey, J.W., and Busenberg, E., 2009, A simple technique for continuous measurement of time-variable gas transfer in surface waters: Limnology and Oceanography: Methods, v. 7, p. 185-195. (on-line abstract)


2010

Brand, W.A., Assonov, S.S., and Coplen, T.B., 2010, Correction for the 17O interference in δ(13C) measurements when analyzing CO2 with stable isotope mass spectrometry (IUPAC Technical Report): Pure and Applied Chemistry, v. 82, no. 8, p. 1719-1733. (on-line abstract of journal article)
Coplen, T.B., 2010, Isotopic reference materials, in Beauchemin. D, and Matthews, D.E., eds., Elemental and Isotope Ratio Mass Spectrometry: The Encyclopedia of Mass Spectrometry, Gross, M. L. and Caprioli, R. M., series eds., Oxford, U.K., Elsevier, v. 5, p. 774-783.
Coplen, T.B., 2010, Sequential, time-integrated collector of precipitation, ground water, and surface water for analysis of isotopes: U.S. Patent No. 7,687,028. (on-line patent)
Coplen, T.B. and Qi, H., 2010, Applying the silver-tube introduction method for thermal conversion elemental analyses and a new δ2H value for NBS 22 oil: Rapid Communications in Mass Spectrometry, v. 24, no. 15, p. 2269-2276, DOI: 10.1002/rcm.4638. (on-line abstract or on-line article in pdf format, 432 KB, published by John Wiley Interscience as a U.S. Government work in the public domain)
Coplen, T.B. and Qi, H., 2010, Caution on the use of liquid nitrogen traps in stable hydrogen isotope-ratio mass spectrometry: Analytical Chemistry, v. 82, no. 18, p. 7849–7851, DOI: 10.1021/ac101570f. (on-line abstract or on-line article in pdf format, 4.54 MB, published by the American Chemical Society, not subject to U.S. copyright)
Evans, W.C., Mariner, R.H., Bergfeld, D., Revesz, K.M. and McGeehin, J.P. 2010, Carbon isotope composition of CO2 at Cascade Arc volcanoes, in Birkle, P., and & Torres-Alvarado, I.S., eds., Water-Rock Interaction XIII: Taylor & Francis Group, London, p. 195-198. ISBN 978-0-415-60426-0
Green, C.T., Böhlke, J.K., Bekins, B.A., and Phillips, S.P., 2010, Mixing effects on apparent reaction rates and isotope fractionation during denitrification in a heterogeneous aquifer: Water Resources Research, v. 46, W08525, doi:10.1029/2009WR008903 (on-line abstract or on-line article in pdf format, 1707 KB, published by the American Geophysical Union, not subject to U.S. copyright)
Jackson, W.A., Böhlke, J.K., Gu, B., Hatzinger, P.B., and Sturchio, N.C., 2010, Isotopic composition and origin of indigenous natural perchlorate and co-occurring nitrate in the southwestern united states: Environmental Science and Technology, v. 44, no. 13, p. 4869-4876. (on-line abstract of journal article)
Mack, T.J., Akbari, M.A., Ashoor, M.H., Chornack, M.P., Coplen, T.B., Emerson, D.G., Hubbard, B.E., Litke, D.W., Michel, R.L., Plummer, L.N., Rezai, M.T., Senay, G.B., Verdin, J.P., and Verstraeten, I.M., 2010, Conceptual model of water resources in the Kabul Basin, Afghanistan: U.S. Geological Survey Scientific Investigations Report 2009–5262, 240 p. (on-line abstract and access to on-line report in pdf format)
Mack, T.J., Chornack, M.P., Coplen, T.B., Plummer L.N., Rezai, M.T., and Verstraeten, I.M., 2010, Availability of Water in the Kabul Basin, Afghanistan. U.S. Geological Survey Fact Sheet, FS 2010-3037, 4p. (on-line abstract or on-line fact sheet in pdf format, 2.84 MB)
Qi, H., Gröning, M., Coplen, T.B., Buckly, B., Mroczkowski, S.J., Brand, W.A., Geilmann, H., and Gehre, M., 2010, Novel silver-tubing method for quantitative introduction of water into high-temperature conversion systems for stable hydrogen and oxygen isotopic measurements: Rapid Communications in Mass Spectrometry, vol. 24, p. 1821-1827, DOI: 10.1002/rcm. (on-line abstract of journal article)
Rao, B., Hatzinger, P.B., Böhlke, J.K., Sturchio, N.C., Andraski, B., and Jackson, W.A., 2010, Natural chlorate in the environment: Application of a new IC-ESI/MS/MS method with a Cl18O3- internal standard. Environmental Science & Technology, v. 44, no. 22, p. 8429-8434. (on-line abstract of journal article)
Révész, K.M., Breen, K.J., Baldassare A.J., and Burruss , R.C., 2010, Carbon and hydrogen isotopic evidence for the origin of combustible gases in water-supply wells in north-central Pennsylvania: Applied Geochemistry, v. 25, no. 12, p. 1845–1859. (on-line abstract of journal article)


2011

Coplen, T.B., 2011, Guidelines and recommended terms for expression of stable-isotope-ratio and gas-ratio measurement results: Rapid Communications in Mass Spectrometry, v. 25, p. 2538-2560, doi:10.1002/rcm.5129, (on-line abstract or on-line article in pdf format, 1.7 MB, published by Wiley, U.S. Government work, not copyright protected in U.S.)
Coplen, T.B., and Holden, N.E., 2011, Atomic weights - No longer constants of nature: Chemistry International, v. 33, no. 2, p. 10-15. (on-line article, open-access journal)
Cozzarelli, I.M., Böhlke, J.K., Masoner, J., Breit, G.N., Lorah, M.M., Tuttle, M.L.W., and Jaeschke, J.B., 2011, Biogeochemical evolution of a landfill leachate plume, Norman, Oklahoma: Ground Water, v. 49, no. 5, p. 663-687. (on-line abstract or on-line article in pdf format, 3451 KB, published by the National Ground Water Association, no claim to original U.S. Government works)
Gu, B., Böhlke, J.K., Sturchio, N.C., Hatzinger, P.B., Jackson, W.A., Beloso, A.D., Heraty, L.J., Bian, Y., Jiang, X., and Brown, G.M., 2011, Applications of selective ion exchange for perchlorate removal, recovery, and environmental forensics, in SenGupta, A.K., ed., Ion Exchange and Solvent Extraction: A Series of Advances: v. 20. Taylor & Francis, p. 117-144.
Holden, N.E., Coplen, T.B., Böhlke, J.K., Wieser, M.E., Singleton, G., Walczyk, T.R., Yoneda, S., Mahaffy, P.G., and Tarbox, L.V., 2011, IUPAC Periodic Table of the Isotopes: Chemistry International, v. 33, no. 4 Supplement. (on-line article or on-line supplement in pdf format, 1439 KB open-access journal)
Holloway, J.M., Nordstrom, D.K., Böhlke, J.K., McCleskey, R.B., and Ball, J.W., 2011, Ammonium in thermal waters of Yellowstone National Park: Processes affecting speciation and isotope fractionation: Geochimica et Cosmochimica Acta, v. 75, no. 16, p. 4611-4636, (on-line abstract of journal article)
Landwehr, J.M., Sharp, W.D., Coplen, T.B., Ludwig, K.R., and Winograd, I.J., 2011, The chronology for the δ18O record from Devils Hole, Nevada, extended into the Mid-Holocene: U.S. Geological Survey Open-File Report 2011-1082, 5 p. (on-line abstract or on line-report in pdf format, 180 KB; see abstract to download data in excel format)
McMahon, P.B., Plummer, L.N., Böhlke, J.K., Shapiro, S.D., and Hinkle, S.R., 2011, A comparison of recharge rates in aquifers of the United States based on groundwater-age data: Hydrogeology Journal, v, 19, no. 4, p. 779-800. DOI: 10.1007/s10040-011-0722-5. (on-line abstract or on-line journal article in pdf format, 2.4 MB, U.S. Government work, not copyright protected in the U.S.)
Peters, N.E., Böhlke, J.K., Brooks, P.D., Burt, T.P., Gooseff, M.N., Hamilton, D., Mulholland, P.J., Roulet, N.T., and Turner, J., 2011, Linkages between hydrology and biogeochemistry, in Wilderer, P., ed., Treatise on Water Science: Elsevier Science, v. 2, p. 271-304. doi:10.1016/B978-0-444-53199-5.00038-5 (on-line abstract of chapter)
Qi, H., and Coplen, T.B., 2011, Erratum for Investigation of preparation techniques for δ2H analysis of keratin materials and a proposed analytical protocol, v. 25, no. 18, p. 2672.
Qi, H., and Coplen, T.B., 2011, Investigation of preparation techniques for δ2H analysis of keratin materials and a proposed analytical protocol: Rapid Communications in Mass Spectrometry, v. 25, no. 15, p. 2209-2222. (on-line abstract of journal article)
Qi, H., Coplen, T.B., and Wassenaar, L.I., 2011. Improved online δ18O measurements of nitrogen- and sulfur-bearing organic materials and a proposed analytical protocol: Rapid Communications in Mass Spectrometry, v. 25, p. 2049-2058. (on-line abstract of journal article)
Sturchio, N.C., Böhlke, J.K., Gu, B., Hatzinger, P.B., and Jackson, W.A., 2011, Isotopic tracing of perchlorate in the environment, in Baskaran, M., ed., Handbook of Environmental Isotope Geochemistry, Springer-Verlag, p. 437-452
Tobias, C. , and Böhlke, J.K., 2011, Biological and geochemical controls on diel dissolved inorganic carbon cycling in a low-order agricultural stream: Implications for reach scales and beyond: Chemical Geology, v. 283, no. 1-2, 7 p. 18-30 (on-line abstract of journal article)
Wieser, M.E., and Coplen, T.B., 2011, Atomic weights of the elements 2009 (IUPAC Technical Report): Pure and Applied Chemistry, v. 83, no. 2, p. 359-396. (on-line abstract or on-line article in pdf format, 1795 KB, U.S. government work in the public domain)


2012

Coplen, T. B., and Qi, H., 2012, USGS42 and USGS43: Human-hair stable hydrogen and oxygen isotopic reference materials and analytical methods for forensic science and implications for published measurement results: Forensic Science International, v. 214, p. 135-141. doi:10.1016/j.forsciint.2011.07.035 (on-line abstract of journal article)
Eberts, S.M., Böhlke, J.K., Kauffman, L.J., and Jurgens, B.C., in press (web publication 1/4/12), Comparison of particle-tracking and lumped-parameter age-distribution models for evaluating vulnerability of production wells to contamination: Hydrogeology Journal. (on-line abstract or on-line preprint in pdf format, 6.2 MB)
Liao, L., Green, C.T., Bekins, B.A., and Böhlke, J.K., 2012 (web publication 12/30/11), Factors controlling nitrate fluxes in groundwater in agricultural areas. Water Resources Research, v. 48, W00L09, doi:10.1029/2011WR011008. (on-line abstract or on-line journal article in pdf format, 858 KB, published by the American Geophysical Union, not subject to U.S. copyright)
Révész, K., Buck, B., and Coplen, T. B., in press, Determination of the δ2H and δ18O of Soil Water and Plant Matter: RSIL Lab Code 1700, chap. C19 of Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: Reston, Virginia, U.S. Geological Survey, Techniques and Methods, 10-C19, 25 p.
Singleton, G.L., Révész, K., Coplen, T., in press, Determination of the δ(13C/12C) of Dissolved Inorganic Carbon in Water: RSIL LAB 1710, Révész, Kinga, and Coplen, Tyler B., eds., Methods of the Reston Stable Isotope Laboratory: U.S. Geological Survey Techniques and Methods, 10-C18, 28 p.


 

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