Dr. Peter H.Santschi
Contact Information:
Texas A&M University
Email: santschi@tamug.edu
1001 Texas Clipper Rd - Bldg 3029
Phone: 409-740-4719
Fax: 409-740-4787
TX, 77554 USA  
Ph.D. Chemistry, University of Berne, Switzerland, 1975
M.S. Chemistry, University of Berne, Switzerland, 1971
B.S. Gymnasium Berne, Switzerland, Matura 1963
Specialty: Environmental RadioBioGeoChemistry
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 trace element binding and removal from natural waters. Recent work centered on relationships between actinide elements, 129I, a number of trace and ultra-trace elements, PCBs, dioxins, and natural organic matter, including humic exopolymeric substances in the aquatic environment.
Courses Taught:
Texas A&M University (Graduate):
"Isotope Geochemistry"
“Seminar in Oceanography/Marine Science”
“Dynamics of Environmental Colloids”

 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"
Texas A&M University at Galveston (Undergraduate):
"Chemical Oceanography"
"Geological Oceanography"
"Environmental Chemistry"
"Environmental Geology"

Selected Recent Publications:
  • Guo, L. and Santschi, P.H. 2007. Ultrafiltration and its applications to sampling and characterization of aquatic colloids. In "Environmental Colloids and Particles: Behaviour, Separation and Characterisation," Wilkinson, K. and Lead, J. (Eds), Chapter 4, International Union of Pure and Applied Chemistry (IUPAC) Series on Analytical and Physical Chemistry of Environmental Systems, John Wiley, pp.159-221.
  • Doucet, F.J., Lead, J.R., and Santschi, P.H. 2007. Colloid-Trace Element Interactions in Aquatic Systems. In "Environmental Colloids and Particles: Behaviour, Separation and Characterisation," Wilkinson, K. and Lead, J. (Eds), Chapter 3, International Union of Pure and Applied Chemistry (IUPAC) Series on Analytical and Physical Chemistry of Environmental Systems, John Wiley, pp. 95-158.
  • Santschi, P.H., Oktay, S.D., and Cifuentes, L., 2007. Carbon isotopes and iodine concentrations in a Mississippi River delta core recording land use, sediment transport, and dam building in the river's drainage basin. Mar. Env. Res., 63, 278-290.
  • Yeager, K.M., Santschi, P.H., Rifai, H.S., Suarez, M.P., Brinkmeyer, R.L., Hung, C.-C., Schindler, K., Andres, M., and Weaver, E. 2007. Dioxin chronology and fluxes in sediments of the Houston Ship Channel, Texas: Influence of non-steady state sediment transport and total organic carbon. Environ. Sci. Technol., 41, 5291-5298.
  • Hung, C.-C., Gong, G.-C., Chen, H.-Y., Hsieh, H.-L., Santschi, P.H., Wade, T.L., Sericano, J.L. 2007. Relationship between pesticides and organic carbon fractions in sediments of the Danshui River estuary and adjacent coastal areas of Taiwan. Environ. Pollution, 148, 546-554.
  • Guo, L.D., Warnken, K.W., and Santschi, P.H. 2007. Retention behavior of dissolved uranium during ultrafiltration: Implications for colloidal uranium in surface waters. Mar. Chem., 107, 156-166.
  • Warnken, K.W., Santschi, P.H., Roberts, K.A., and Gill, G.A. 2008. The cycling and oxidation pathways of organic carbon in a shallow estuary along the Texas Gulf Coast. Estuarine, Coastal and Shelf Science, 76, 69-84.
  • Hung, C., Moran, S.B., Cochran, J.K., Guo, L.D., and Santschi, P.H. 2008. Comment on “How accurate are 234Th measurements in seawater based on the MnO2-impregnated cartridge technique?” by Pinghe Cai et al., Geochem. Geophys. Geosyst., 9(2), Q02009, doi:10.1029/2007GC001770.
  • Navarro, E., Miao, A.J., Baun, A., Behra, R., Bloch Hartmann, N.I., Filser, J., Quigg, A., Santschi, P.H., Sigg, L. 2008. Ecotoxicity of nanomaterials on photosynthetic organisms and fungi: state of the art and future needs. Ecotoxicology, 17, 372–386.
  • Roberts, K.A., Santschi, P.H., and Honeyman, B.D. 2008. Pu(V) reduction and enhancement of particle-water partitioning by exopolymeric substances. Radiochim. Acta, 96(9-11), 739-745.
  • Zhang, S., Xu, C., and Santschi, P.H. 2008. Chemical characterization of extracellular polymeric substances produced by the marine diatom Amphora sp., and their and interactions with 234Th (Ⅳ). Marine Chemistry, 112, 81-92.
  • Xu, C., Santschi, P.H., Zhong, J.Y., Hatcher, P.G., Francis, A.J., Dodge, C.J., Roberts, K.A., Hung, C.-C., Honeyman, B.D. 2008. Colloidal cutin-like substances cross-linked to siderophore decomposition products mobilizing plutonium from contaminated soils, Environmental Science and Technology, 42(22), 8211-8217.
  • Ding, Y.-X., Chin, W.-C., Rodriguez, A., Hung, C.-C., Santschi, P.H., and Verdugo, P. 2008. Amphiphilic exopolymers from Sagitulla stellata induce self-assembly of DOM polymers and the formation of marine microgels. Marine Chemistry, 112, 11–19.
  • Santschi, P.H., and Rowe, G.T. 2008. Radiocarbon-derived sedimentation rates in the Gulf of Mexico. Deep-Sea Res. II, Gulf of Mexico Special Issue, 55, 2572–2576.
  • Wen, L.-S., Warnken, K.W., and Santschi, P.H. 2008. The role of organic carbon, iron, and aluminium oxyhydroxides as trace metal carriers in the Trinity River and Trinity River Estuary (Galveston Bay, Texas), Marine Chemistry, 112, 20–37.
  • Ravens, T.M., Thomas, R.C., Roberts, K.A., and Santschi, P.H. 2008. Causes of salt marsh erosion in Galveston Bay, Texas, Journal of Coastal Research, doi: 10.2112/07-0942, in press.
  • Warnken, K.W., Santschi, P.H. 2008. Sediment and trace metal delivery from the Trinity River watershed to Galveston Bay and the Gulf of Mexico. Estuaries and Coasts, DOI 10.1007/s12237-008-9088-x.
  • Baskaran, M., Hong, G.-H., and Santschi, P.H. 2008. Radionuclide analysis in seawater. In: "Practical Guidelines for the Analysis of Seawater", O. Wurl, editor, CRC Press, Taylor and Francis Group, in press.
  • Zhang, S., and Santschi, P.H. 2008. Application of cross-flow ultrafiltration for isolating exopolymeric substances (EPS) from a marine diatom (Amphora sp.), Limnol. Oceanogr. Methods, conditionally accepted.
  • Ding, Y.-X., Hung, C.-C., Santschi, P.H., Verdugo, P., and Chin, W.-C. 2008. Spontaneous assembly of exopolymers from phytoplankton. Terrestrial, Atmospheric and Oceanic Sciences (TAO), accepted.
  • Xu, C., Santschi, P.H., and Schwehr, K.A. Optimized isolation and purification procedure for obtaining strongly actinide binding exopolymeric substances (EPS) from two bacteria (Sagittula stellata and Pseudomonas fluorescens Biovar II), Bioresource Technology, accepted.