Thomas Martin Johnson

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A cenozoic seawater redox record derived from 238U/235U in ferromanganese crusts

Wang, X., Planavsky, N. J., Reinhard, C. T., Hein, J. R. & Johnson, T. M., Jan 2016, In : American Journal of Science. 315, 11, p. 64-83 20 p.

Research output: Contribution to journalArticle

A Mesoarchean shift in uranium isotope systematics

Wang, X., Planavsky, N. J., Hofmann, A., Saupe, E. E., De Corte, B. P., Philippot, P., LaLonde, S. V., Jemison, N. E., Zou, H., Ossa, F. O., Rybacki, K., Alfimova, N., Larson, M. J., Tsikos, H., Fralick, P. W., Johnson, T. M., Knudsen, A. C., Reinhard, C. T. & Konhauser, K. O., Oct 1 2018, In : Geochimica et Cosmochimica Acta. 238, p. 438-452 15 p.

Research output: Contribution to journalArticle

A review of mass-dependent fractionation of selenium isotopes and implications for other heavy stable isotopes

Johnson, T. M., Apr 15 2004, In : Chemical Geology. 204, 3-4, p. 201-214 14 p.

Research output: Contribution to journalArticle

A sequential extraction technique for mass-balanced stable selenium isotope analysis of soil samples

Schilling, K., Johnson, T. M. & Mason, P. R. D., Aug 14 2014, In : Chemical Geology. 381, p. 125-130 6 p.

Research output: Contribution to journalArticle

Chemical characteristics of thermal water beneath the eastern Snake River Plain

McLing, T. L., Smith, R. W. & Johnson, T. M., Jan 1 2002, In : Special Paper of the Geological Society of America. 353, p. 205-211 7 p.

Research output: Contribution to journalArticle

Chromium isotope fractionation factors for reduction of Cr(VI) by aqueous Fe(II) and organic molecules

Kitchen, J. W., Johnson, T. M., Bullen, T. D., Zhu, J. & Raddatz, A., Jul 15 2012, In : Geochimica et Cosmochimica Acta. 89, p. 190-201 12 p.

Research output: Contribution to journalArticle

Chromium isotopes and the fate of hexavalent chromium in the environment

Ellis, A. S., Johnson, T. M. & Bullen, T. D., Mar 15 2002, In : Science. 295, 5562, p. 2060-2062 3 p.

Research output: Contribution to journalArticle

Coupled iron, sulfur and carbon isotope evidences for arsenic enrichment in groundwater

Wang, Y., Xie, X., Johnson, T. M., Lundstrom, C. C., Ellis, A., Wang, X., Duan, M. & Li, J., Nov 7 2014, In : Journal of Hydrology. 519, PA, p. 414-422 9 p.

Research output: Contribution to journalArticle

Cr isotope fractionation factors for Cr(VI) reduction by a metabolically diverse group of bacteria

Basu, A., Johnson, T. M. & Sanford, R. A., Oct 1 2014, In : Geochimica et Cosmochimica Acta. 142, p. 349-361 13 p.

Research output: Contribution to journalArticle

Cr stable isotopes as indicators of Cr(VI) reduction in groundwater: A detailed time-series study of a point-source plume

Berna, E. C., Johnson, T. M., Makdisi, R. S. & Basu, A., Feb 1 2010, In : Environmental Science and Technology. 44, 3, p. 1043-1048 6 p.

Research output: Contribution to journalArticle

Cr stable isotopes in snake river plain aquifer groundwater: Evidence for natural reduction of dissolved Cr(VI)

Raddatz, A. L., Johnson, T. M. & McLing, T. L., Jan 15 2011, In : Environmental Science and Technology. 45, 2, p. 502-507 6 p.

Research output: Contribution to journalArticle

Denitrification in the shallow ground water of a tile-drained, agricultural watershed

Mehnert, E., Hwang, H. H., Johnson, T. M., Sanford, R. A., Beaumont, W. C. & Holm, T. R., Jan 2007, In : Journal of Environmental Quality. 36, 1, p. 80-90 11 p.

Research output: Contribution to journalArticle

Environmental impacts of the Tennessee Valley Authority Kingston coal ash Spill. 1. Source apportionment using mercury stable isotopes

Bartov, G., Deonarine, A., Johnson, T. M., Ruhl, L., Vengosh, A. & Hsu-Kim, H., Feb 19 2013, In : Environmental Science and Technology. 47, 4, p. 2092-2099 8 p.

Research output: Contribution to journalArticle

Environmental impacts of the Tennessee Valley Authority Kingston coal ash spill. 2. effect of coal ash on methylmercury in historically contaminated river sediments

Deonarine, A., Bartov, G., Johnson, T. M., Ruhl, L., Vengosh, A. & Hsu-Kim, H., Feb 19 2013, In : Environmental Science and Technology. 47, 4, p. 2100-2108 9 p.

Research output: Contribution to journalArticle

Equilibrium fractionation and isotope exchange kinetics between aqueous Se(IV) and Se(VI)

Tan, D., Zhu, J. M., Wang, X., Johnson, T. M., Li, S. & Xu, W., May 15 2020, In : Geochimica et Cosmochimica Acta. 277, p. 21-36 16 p.

Research output: Contribution to journalArticle

Equilibrium isotopic fractionation and isotopic exchange kinetics between Cr(III) and Cr(VI)

Wang, X., Johnson, T. M. & Ellis, A. S., Mar 5 2015, In : Geochimica et Cosmochimica Acta. 153, p. 72-90 19 p.

Research output: Contribution to journalArticle

Evidence for oxygenic photosynthesis half a billion years before the Great Oxidation Event

Planavsky, N. J., Asael, D., Hofmann, A., Reinhard, C. T., Lalonde, S. V., Knudsen, A., Wang, X., Ossa Ossa, F., Pecoits, E., Smith, A. J. B., Beukes, N. J., Bekker, A., Johnson, T. M., Konhauser, K. O., Lyons, T. W. & Rouxel, O. J., Apr 2014, In : Nature Geoscience. 7, 4, p. 283-286 4 p.

Research output: Contribution to journalArticle

Experimentally determined uranium isotope fractionation during reduction of hexavalent U by bacteria and zero valent iron

Rademacher, L. K., Lundstrom, C. C., Johnson, T. M., Sanford, R. A., Zhao, J. & Zhang, Z., Nov 15 2006, In : Environmental Science and Technology. 40, 22, p. 6943-6948 6 p.

Research output: Contribution to journalArticle

Fate of Selenium in Soils at a Seleniferous Site Recorded by High Precision Se Isotope Measurements

Schilling, K., Johnson, T. M., Dhillon, K. S. & Mason, P. R. D., Jul 15 2015, In : Environmental Science and Technology. 49, 16, p. 9690-9698 9 p.

Research output: Contribution to journalArticle

Field Application of 238U/235U Measurements to Detect Reoxidation and Mobilization of U(IV)

Jemison, N. E., Shiel, A. E., Johnson, T. M., Lundstrom, C. C., Long, P. E. & Williams, K. H., Mar 20 2018, In : Environmental Science and Technology. 52, 6, p. 3422-3430 9 p.

Research output: Contribution to journalArticle

Fractionation of selenium isotopes during bacterial respiratory reduction of selenium oxyanions

Herbel, M. J., Johnson, T. M., Oremland, R. S. & Bullen, T. D., Jan 1 2000, In : Geochimica et Cosmochimica Acta. 64, 21, p. 3701-3709 9 p.

Research output: Contribution to journalArticle

Geochemistry and Cr stable isotopes of Cr-contaminated groundwater in León valley, Guanajuato, México

Villalobos-Aragón, A., Ellis, A. S., Armienta, M. A., Morton-Bermea, O. & Johnson, T. M., Sep 1 2012, In : Applied Geochemistry. 27, 9, p. 1783-1794 12 p.

Research output: Contribution to journalArticle

Geological evolution of the marine selenium cycle: Insights from the bulk shale δ82/76Se record and isotope mass balance modeling

Mitchell, K., Mansoor, S. Z., Mason, P. R. D., Johnson, T. M. & Van Cappellen, P., May 1 2016, In : Earth and Planetary Science Letters. 441, p. 178-187 10 p.

Research output: Contribution to journalArticle

Groundwater "fast paths" in the Snake Plain aquifer: Radiogenic isotope ratios as natural groundwater tracers

Johnson, T. M., Roback, R. C., McLing, T. L., Bullen, T. D., DePaolo, D. J., Doughty, C., Hunt, R. J., Smith, R. W., De Wayne, C. L. & Murrell, M. T., Jan 1 2000, In : Geology. 28, 10, p. 871-874 4 p.

Research output: Contribution to journalArticle

Hg stable isotope analysis by the double-spike method

Mead, C. & Johnson, T. M., Jun 1 2010, In : Analytical and bioanalytical chemistry. 397, 4, p. 1529-1538 10 p.

Research output: Contribution to journalArticle

High-Sensitivity Measurement of Cr Isotopes by Double Spike MC-ICP-MS at the 10 ng Level

Wu, G., Zhu, J. M., Wang, X., Johnson, T. M. & Han, G., Jan 7 2020, In : Analytical chemistry. 92, 1, p. 1463-1469 7 p.

Research output: Contribution to journalArticle

Isotope fractionation during oxidation of tetravalent uranium by dissolved oxygen

Wang, X., Johnson, T. M. & Lundstrom, C. C., Feb 1 2015, In : Geochimica et Cosmochimica Acta. 150, p. 160-170 11 p.

Research output: Contribution to journalArticle

Isotope fractionation of selenium by biomethylation in microcosm incubations of soil

Schilling, K., Johnson, T. M. & Wilcke, W., Aug 16 2013, In : Chemical Geology. 352, p. 101-107 7 p.

Research output: Contribution to journalArticle

Isotope fractionation of selenium during fungal biomethylation by alternaria alternata

Schilling, K., Johnson, T. M. & Wilcke, W., Apr 1 2011, In : Environmental Science and Technology. 45, 7, p. 2670-2676 7 p.

Research output: Contribution to journalArticle

Isotopic evidence for reduction of anthropogenic hexavalent chromium in Los Alamos National Laboratory groundwater

Heikoop, J. M., Johnson, T. M., Birdsell, K. H., Longmire, P., Hickmott, D. D., Jacobs, E. P., Broxton, D. E., Katzman, D., Vesselinov, V. V., Ding, M., Vaniman, D. T., Reneau, S. L., Goering, T. J., Glessner, J. & Basu, A., May 12 2014, In : Chemical Geology. 373, p. 1-9 9 p.

Research output: Contribution to journalArticle

Les métaux dans les particules atmosphériques: Les isotopes peuvent-ils aider à discriminer les pôles d'émission potentiels?

Translated title of the contribution: Metals in atmospheric particles: Can isotopes help discriminate potential sources?Widory, D., Petelet-Giraud, E., Bihan, O. L., Moullec, Y. L., Quetel, C., Snell, J., Van Bocxstaele, M., Hure, A., Canard, E., Joos, E., Forti, L., Bullen, T., Johnson, T. M. & Fiani, E., Nov 22 2010, In : Pollution Atmospherique. NUMERO SPECIAL, p. 75-82 8 p.

Research output: Contribution to journalArticle

Mass-dependent fractionation of selenium and chromium isotopes in low-temperature environments

Johnson, T. M. & Bullen, T. D., Dec 1 2004, In : Reviews in Mineralogy and Geochemistry. 55, p. 289-317 29 p.

Research output: Contribution to journalArticle

Mass-dependent selenium isotopic fractionation during microbial reduction of seleno-oxyanions by phylogenetically diverse bacteria

Schilling, K., Basu, A., Wanner, C., Sanford, R. A., Pallud, C., Johnson, T. M. & Mason, P. R. D., May 1 2020, In : Geochimica et Cosmochimica Acta. 276, p. 274-288 15 p.

Research output: Contribution to journalArticle

Measurements of mass-dependent Te isotopic variation by hydride generation MC-ICP-MS

Wasserman, N. L. & Johnson, T. M., Feb 2020, In : Journal of Analytical Atomic Spectrometry. 35, 2, p. 307-319 13 p.

Research output: Contribution to journalArticle

Microbial mass-dependent fractionation of chromium isotopes

Sikora, E. R., Johnson, T. M. & Bullen, T. D., Aug 1 2008, In : Geochimica et Cosmochimica Acta. 72, 15, p. 3631-3641 11 p.

Research output: Contribution to journalArticle

Microbial U Isotope Fractionation Depends on the U(VI) Reduction Rate

Basu, A., Wanner, C., Johnson, T. M., Lundstrom, C. C., Sanford, R. A., Sonnenthal, E. L., Boyanov, M. I. & Kemner, K. M., Feb 18 2020, In : Environmental Science and Technology. 54, 4, p. 2295-2303 9 p.

Research output: Contribution to journalArticle

Mobilization of arsenic in aquifers from the Datong Basin, China: Evidence from geochemical and iron isotopic data

Xie, X., Johnson, T. M., Wang, Y., Lundstrom, C. C., Ellis, A., Wang, X. & Duan, M., Feb 1 2013, In : Chemosphere. 90, 6, p. 1878-1884 7 p.

Research output: Contribution to journalArticle

No measurable changes in 238U/235U due to desorption-adsorption of U(VI) from groundwater at the Rifle, Colorado, integrated field research challenge site

Shiel, A. E., Laubach, P. G., Johnson, T. M., Lundstrom, C. C., Long, P. E. & Williams, K. H., Mar 19 2013, In : Environmental Science and Technology. 47, 6, p. 2535-2541 7 p.

Research output: Contribution to journalArticle

Paradox of groundwater age: Correction

Bethke, C. M. & Johnson, T. M., Apr 1 2002, In : Geology. 30, 4, p. 385-388 4 p.

Research output: Contribution to journalArticle

Paradox of groundwater age

Bethke, C. M. & Johnson, T. M., Feb 2002, In : Geology. 30, 2, p. 107-110 4 p.

Research output: Contribution to journalArticle

Pathways of arsenic from sediments to groundwater in the hyporheic zone: Evidence from an iron isotope study

Xie, X., Johnson, T. M., Wang, Y., Lundstrom, C. C., Ellis, A., Wang, X., Duan, M. & Li, J., Apr 16 2014, In : Journal of Hydrology. 511, p. 509-517 9 p.

Research output: Contribution to journalArticle

Rapid exchange effects on isotope ratios in groundwater systems 1. Development of a transport-dissolution-exchange model

Johnson, T. M. & DePaolo, D. J., Jan 1997, In : Water Resources Research. 33, 1, p. 187-195 9 p.

Research output: Contribution to journalArticle

Rapid exchange effects on isotope ratios in groundwater systems 2. Flow investigation using Sr isotope ratios

Johnson, T. M. & DePaolo, D. J., Jan 1997, In : Water Resources Research. 33, 1, p. 197-209 13 p.

Research output: Contribution to journalArticle