Research output per year
Research output per year
Personal profile
Professional Information
Prof. Johnson's group focuses on environmental geochemistry, isotope geochemistry, and hydrogeology. The group is working to better understand several redox-sensitive contaminant elements, including chromium, selenium, uranium, and mercury. They develop and use methods for measurement of the stable isotopes of these and other elements as indicators of key geochemical reactions, contamination sources, and past environments on Earth.
The group uses the department's multicollector ICP-MS laboratory constantly to make these measurements and often develops or improves measurement methods.
Teaching
- GEOL 117: The Oceans
- GEOL 118: Natural Disasters
- GEOL 370/GEOG 370/ESE 320: Water Planet/Water Crisis
- GEOL 470: Hydrogeology
- GEOL 562: Isotope Geochemistry
- GEOL 579: Isotope Hydrogeology
Education
Ph.D., University of California at Berkeley
Office Address
3030A Natural History Building
Fingerprint
Fingerprint is based on mining the text of the expert's scholarly documents to create an index of weighted terms, which defines the key subjects of each individual researcher.
- 1 Similar Profiles
Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
-
Double Spike-Standard Addition Technique and Its Application in Measuring Isotopes
Lu, Z., Zhu, J. M., Tan, D., Johnson, T. M. & Wang, X., Jan 31 2023, In: Analytical Chemistry. 95, 4, p. 2253-2259 7 p.Research output: Contribution to journal › Article › peer-review
-
Kinetic Fractionation of Antimony Isotopes during Reduction by Sulfide
Veldhuizen, H. J., MacKinney, J. S. & Johnson, T. M., Dec 21 2023, In: ACS Earth and Space Chemistry. 7, 12, p. 2603-2612 10 p.Research output: Contribution to journal › Article › peer-review
-
A critical review on the occurrence and distribution of the uranium- and thorium-decay nuclides and their effect on the quality of groundwater
Vengosh, A., Coyte, R. M., Podgorski, J. & Johnson, T. M., Feb 20 2022, In: Science of the Total Environment. 808, 151914.Research output: Contribution to journal › Article › peer-review
-
A review of the development of cr, se, u, sb, and te isotopes as indicators of redox reactions, contaminant fate, and contaminant transport in aqueous systems
Johnson, T. M., Druhan, J. L., Basu, A., Jemison, N. E., Wang, X., Schilling, K. & Wasserman, N. L., Apr 22 2022, Isotopic Constraints on Earth System Processes. Wiley, p. 237-269 33 p.Research output: Chapter in Book/Report/Conference proceeding › Chapter
-
Nickel isotopic composition of the upper continental crust
Wu, G., Zhu, J. M., Wang, X., Johnson, T. M., He, Y., Huang, F., Wang, L. X. & Lai, S. C., Sep 1 2022, In: Geochimica et Cosmochimica Acta. 332, p. 263-284 22 p.Research output: Contribution to journal › Article › peer-review