Dr. Peter H. Santschi

Dr. Peter H.Santschi
Distinguished and Regents Professor
Department of Marine and Coastal Environmental Science
1001 Texas Clipper Rd
Bld# 3029, Office 346

Galveston, TX, 77554 USA

E-mail: santschi@tamug.edu
Phone: (409) 740-4476
Fax: (409) 740-4786
Website: loer.tamug.edu/Santschi_Research/

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Ph.D. Chemistry, University of Berne, Switzerland, 1975
M.S. Chemistry, University of Berne, Switzerland, 1971
B.S. Gymnasium Berne, Switzerland, Matura 1963

Research Interests:

A broad range of topics in Chemical Oceanography, Limnology and Hydrology, including tracer applications using radioactive and stable isotopes, relationships between trace element and natural organic matter geochemistry, and importance of exopolymeric substances for pollutants, e.g., oil and trace element, binding and removal from natural waters. Recent work centered on relationships between natural organic matter compounds, e.g., exopolymeric substances, aromatic compounds, or hydroxamate siderophores, and actinide elements, 129I, a number of trace and ultra-trace elements, PCBs, dioxins, oil and corexit.

Courses Taught:

Texas A&M University (Graduate):
"Isotope Geochemistry"
“Seminar in Oceanography/Marine Science”
“Dynamics of Environmental Colloids”

Texas A&M University at Galveston (Undergraduate):
"Environmental Chemistry"
“Nuclear Chemistry”
"Chemical Oceanography"
"Geological Oceanography"
"Environmental Geology"
 Swiss Institute of Technology (ETH) in Zurich, Switzerland:
"Geochemical Oceanography"
"Radioactivity in the Environment"
“Environmental Colloids”

Hong Kong University of Science and Technology:
"Marine Organic Chemistry"
"Marine Colloids Chemistry"
"Marine Radiochemistry"

Recent Publications since 2020

  1. Shiu, R.-F., Vazquez, C.I., Tsai, Y.-T., Torres, G.V., Chen, C.-S., Santschi, P.H., Quigg, A., Chin, W.-C. 2020. Nano-plastics induce aquatic particulate organic matter (microgels) formation. Science of the Total Environment, https://doi.org/10.1016/j.scitotenv.2019.135681
  2. Lin, P., Xu, C., Xing, W., Hillhouse, J., Sun, L., Schwehr, K.A., Quigg, A., Santschi, P.H. 2020. Partitioning of iron and plutonium in exopolymeric substances and intracellular biopolymers: a comparison study between the coccolithophore Emiliania huxleyi and the diatom Skeletonema costatum. Mar. Chem., org/10.1016/j.marchem.2019.103735
  3. Shiu, R.-F., Chiu, M.-H., Vazquez, C.I., Yi-Yen Tsai, Y.-Y., Le, A., Wa-kagiri, A., Xu, C., Kamalanathan, M., Bacosa, H., Doyle, S., Sylvan, J., Santschi, P.H., Quigg, A., Chin, -C. 2020. Protein to carbohydrate (P/C) ratio changes in microbial extracellular polymeric substances induced by oil and Corexit. Marine Chemistry 223 (2020) 103789; https://doi.org/10.1016/j.marchem.2020.103789.
  4. Kamalanathan, M., Doyle, S., Xu, C., Buchot, G.G., Bacosa, H., Bretherton, L., Morales, M., Wade, T.L., Schwehr, K.A., Santschi, P.H., Sylvan, J., Quigg, A. 2020. Exoenzymes as a signature of microbial response to marine environmental conditions, mSystems, https://doi.org/10.1128/mSystems.00290-20
  5. Bacosa, H.P., Steichen, J., Kamalanathan, M., Windham, R., Lubguban, A., Labonte, J., Kaiser, K., Hala, D., Santschi, P.H., Quigg, A.S. 2020. Polycyclic aromatic hydrocarbons (PAHs) and putative PAH-degrading bacteria in Galveston Bay, TX (USA), following Hurricane Harvey (2017). Environmental Science and Pollution Research, https://doi.org/10.1007/s11356-020-09754-5.
  6. Xu, C., Lin, P, Sun, L., Chen, H.-M., Xing, W., Hatcher, P.G., Conte, M., Santschi, P.H. 2020. Molecular nature of marine particulate organic iron-carrying moieties revealed by electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry (ESI-FTICRMS). Frontiers in Earth Science-Biogeoscience, “The Oceanic Particle Flux and its Cycling Within the Deep Water Column”, Frontiers of Earth Science, 8:266; Higher Education Press 2020, 2095-0195. doi: 10.3389/feart.2020.00266
  7. Genzer, J. L., Kamalanathan, M., Bretherton, L., Hillhouse, J., Xu, C., Santschi, P. H. and Quigg, A. 2020. Diatom aggregation when exposed to crude oil and chemical dispersants: potential impacts of ocean acidification. PLoS ONE. PLoS ONE 15(7): e0235473.
    https:// doi.org/10.1371/journal.pone.0235473
  8. Shiu, R.-F., Vazquez, C.I., Chiang, C.-Y., Chiu, M.-H., Chen, C.-S., Ni, C.-W., Gong, G.-C., Quigg, A., Santschi, P.H., Chin, W.-C. 2020. Nano- and microplastics trigger secretion of protein-rich extracellular polymeric substances from phytoplankton. STOTEN, https://doi.org/10.1016/j.scitotenv.2020.141469.
  9. Bacosa, H.P., Kamalanathan, M., Cullen, J., Shi, D., Xu, C., Schwehr, K.A., Hala, D., Lubguban, A.A., Wade, T.L. Knap, A.H., Santschi, P.H., and Quigg, A.S. 2020. Marine snow aggregates are enriched in polycyclic aromatic hydrocarbons (PAHs) in oil contaminated waters; insights from a mesocosm study. Journal of Marine Science and Engineering (JMSE), Special Issue "Degradation of Marine Oil Pollution “, Mar. Sci. Eng.2020, 8(10), 781; https://doi.org/10.3390/jmse8100781
  10. Rowe, G.T., Fernando, H., Elferink, C., Shakeel Ansari, G.A., Sullivan, J., Heathman, T., Quigg, A., Petronella, S., Wade, T.L., Santschi, P.H. 2020. Polycyclic aromatic hydrocarbons (PAH) cycling and fates in Galveston Texas, USA. PLoS One, https://doi.org/10.1371/journal.pone.0243734
  11. Santschi, P.H., Xu, C., Schwehr, A.K., Lin, P., Sun, L., Chin, W.-C., Kamalanathan, M., Quigg, A. Can the protein/carbohydrate (P/C) ratio of exopolymeric substances (EPS) be used as a proxy for its ‘stickiness’ and other biophysical properties? Perspective article in Marine Chemistry, https://doi.org/10.1016/j.marchem.2019.103734.
  12. Lin, P., Xu, C., Sun, L., Xing, W., Santschi, P.H. 2020. Incorporation of hydroxamate siderophore and associated Fe into marine particles in natural seawater. Frontiers Marine Science, https://doi.org/10.3389/fmars.2020.584628
  13. Quigg, A., Xu, C., Chin, W.-C., Kamalanathan, M., Sylvan, J.B., Finkel, Z.V., Irwin, A.J., Ziervogel, K., Wade, T.L., Knap, A.H., Hatcher, P.G., and Santschi, P.H. 2020. Marine snow formation and fluxes after crude oil spills: Review of findings from the Deepwater Horizon oil spill study. Proceedings of the International Oil Spill Conference, May 2020. Accepted. # 689531
  14. Sun, L., Chin, W.-C., Chiu, H.-H., Xu, C., Lin, P., Schwehr, K.A., Quigg, A., Santschi, P.H. 2021. Sunlight induced aggregation of protein-containing dissolved organic matter (DOM) in the coastal ocean, Marine Chemistry, https://doi.org/10.1016/j.marchem.2020.103907.
  15. Chen, C.-S., Shiu, R.-F., Hsieh, Y.-Y., Xu, C., Vazquez, C.I., Cui, Y., Hsu, C., Quigg, A., Santschi, P.H., Chin, W.-C. 2021. Stickiness of Extracellular Polymeric Substances on different surfaces via Magnetic Tweezers. STOTEN, https://doi.org/10.1016/j.scitotenv.2020.143766
  16. Lin, P., Xu, C., Xing, W., Santschi, P.H. 2021. Molecular-level characterization of diatom- and coccolithophore-associated organic biopolymers that strongly bind particle-reactive radionuclides (234Th, 233Pa, 210Pb, 210Po and 7Be) in the ocean. Mar. Sci., | https://doi.org/10.3389/fmars.2021.703503
  17. Kamalanathan M, Schwehr KA, Labonté JM, Taylor C, Bergen C, Patterson N, Claflin N, Santschi PH and Quigg A (2021) The Interplay of Phototrophic and Heterotrophic Microbes Under Oil Exposure: A Microcosm Study. Front. Microbiol. 12:675328. doi: 10.3389/fmicb.2021.675328
  18. Kaplan, D.I., Nichols, R., Xu, C., Lin, P., Yeager, C.M., Santschi, P.H. 2021. Large seasonal fluctuations of groundwater radioiodine speciation and concentrations in a riparian wetland in South Carolina. STOTEN, in press, https://doi.org/10.1016/j.scitotenv.2021.151548.
  19. Xu, C., Lin, P., Garimella, R., Li, D., Xing, W., Patterson, N., Kaplan, D.I., Yeager, C.M., Hatcher, P.G., Santschi, P.H. 2021. 1H-13C heteronuclear single quantum coherence NMR evidence for iodination of natural organic matter influencing organo-iodine mobility in the environment. STOTEN, in press, https://doi.org/10.1016/j.scitotenv.2021.152546.
  20. Quigg, A., Xu, Chin, W.-C., Kamalanathan, M., Sylvan, J., Finkel, Z.V., Irwin, A.J., Ziervogel, K., Wade, T.L., Knap, T., Hatcher, P.G., Santschi, P.H.. 2021. Crude oil and particulate fluxes including marine oil snow sedimentation and flocculant accumulation: Deepwater Horizon oil spill study. International Oil Spill Conference Proceedings (2021) 2021 (1): 689531; https://doi.org/10.7901/2169-3358-2021.1.689531.
  21. Santschi, P.H., Chin, W.C., Quigg, A., Xu, C., Kamalanathan, M., Lin, P. 2021. Marine gel interactions with hydrophilic and hydrophobic pollutants. Gels; Special Issue on Marine Gels, Gels 2021, 7, 83. https://doi.org/10.3390/gels7030083.
  22. Quigg A, Santschi PH, Xu C, Ziervogel K, Kamalanathan M, Chin W-C, Burd AB, Wozniak A and Hatcher PG. 2021 Aggregation and Degradation of Dispersants and Oil by Microbial Exopolymers (ADDOMEx): Toward a Synthesis of Processes and Pathways of Marine Oil Snow Formation in Determining the Fate of Hydrocarbons. Front. Mar. Sci. 8:642160. doi: 10.3389/fmars.2021.642160.
  23. Quigg, A.; Santschi,P.H.; Burd, A.; Chin, W.-C.; Kamalanathan, M.; Xu, C.; Ziervogel, K.2021 From Nano-Gels to Marine Snow: A Synthesis of Gel Formation Processes and Modeling Efforts Involved with Particle Flux in the Ocean. Gels 2021, 7,114.

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