Education:

Post-Doc, Department of Marine Science, Texas A&M University Galveston, 2010-2012
Ph.D.,Oceanography, Department of Oceanography, Texas A&M University, 2010.
M.S., Marine Chemistry, Institute of Oceanography & Environmental Science, Xiamen University, China,2003.
B.S., Fine Chemical Engineering, Department of Environment & chemical Engineering, Yanshan University, China,2000.

Professional Experience:

Research Interests:

Biogeochemical cycling of radionuclides (I-129, Th-234, Pu) and their interactions with natural organic matter (e.g. humic acids and extracellular polymeric substances);
Toxic effects of engineered nanoparticles on marine microorganisms;
Application of trace metals in environmental chemistry and fish ecology;
Management of analytical/environmental laboratories (organics/metals).

Awards:

• Welch Foundation, 2010.
• Erma Lee and Luke Mooney Graduate Travel Grant, 2009-2010.
• Erma Lee and Luke Mooney Graduate Travel Grant, 2007-2008.

Selected Peer-reviewed Publications:

1. Xu, C., Zhang, S., Athon, M., Ho, Y.-F., Li, H.-P., Grandbois, R., Schwehr, K.A., Kaplan, D.I., Yeager, C.M., Wellman, D., Santschi, P.H. 2015. A Re-evaluation of Radioiodine Transformation and Migration in the subsurface of Hanford Site. J. Env. Radioactivity, 139, 43-55.
2. Baumann, H., Wells, R.J.D., Rooker, J.R., Zhang, S., Baumann, Z., Madigan, D.J., Dewar, H., Snodgrass, O.E., and Fisher, N.S. 2015. Combining otolith microstructure and trace elemental analyses to infer the arrival of juvenile Pacific Bluefin tuna in the California current ecosystem. ICES J. Marine Science, 04/2015; DOI: 10.1093/icesjms/fsv062.
3. Zhang, S., Ho, Y.-F., Creeley, D., Kimberly, R.A., Xu, C., Li, H.-P., Schwehr, K.A., Kaplan, D.I., Yeager, C.A., Sanschi, P.H. 2014. Temporal Variation of Iodine Concentration and Speciation (127I and 129I) in Wetland Groundwater from the Savannah River Site, USA. Environ. Sci. Technol., 48, 11218-11226.
4. Kaplan, D.I., Zhang, S., Roberts, K.A., Schwehr, K.A., Xu, C., Creeley, D., Ho, Y.-F., Li, H.-P., Yeager, C.A., and Sanschi, P.H. 2014. Radioiodine concentrated in a wetland. Journal of Environmental Radioactivity 131, 57-61.
5. Xu, C.; Athon, M.; Ho, Y.-F.; Chang, H.-S.; Zhang, S.; Kaplan, D.I., Schwehr, K.A.; DiDonato, N.; Hatcher, P.; Santschi, P.H. Plutonium Immobilization and Re-mobilization by Soil Mineral and Organic Matter in the Far-Field of the Savannah River Site, USA. Environ. Sci. Technol. 2014, 48, 3186-3195.
6. Zhang, S., Xu, C., Creeley, D., Ho, Y.-F., Li, H.-P., Grandbois, R., Schwehr, K.A., Kaplan, D.I., Yeager, C.M., Wellman, D., Santschi, P.H. Iodine-129 and Iodine-127 Speciation in Groundwater at the Hanford Site, U.S.: Iodate Incorporation into Calcite. Environ. Sci. Technol., 2013, 47, 9635-9642.
7. Zhang, S., Jiang, Y., Chen, C.-S., Creeley, D., Schwehr, K.A., Quigg, A., Chin, W.-C. and Santschi, P.H. Ameliorating Effects by Extracellular Polymeric Substances Excreted by Thalassiosira pseudonana on algal toxicity of CdSe Quantum Dots.  Aquatic Toxicology, 2013, 126, 214-223.
8. Zhang, S., Jiang, Y., Chen, C.-S., Spurgin, J., Schwehr, K.A., Quigg, A., Chin, W.-C. and Santschi, P.H. Aggregation, Dissolution, and Stability of Quantum Dots in Marine Environments: Importance of Extracellular Polymeric Substances. Environ. Sci. Technol., 2012, 46, 8764-8772.
9. Zhang, S., Du J., Xu C., et al. Concentration Dependent Mobility, Retardation and Speciation of Iodine in Surface Sediment from the Savannah River Site.  Environ. Sci. Technol. 2011, 45, 5543–5549.
10. Xu, C.; Zhang, S.; Chuang, C. Y.; Miller, E. J.; Schwehr, K. A.; Santschi, P. H., Chemical composition and relative hydrophobicity of microbial exopolymeric substances (EPS) isolated by anion exchange chromatography and their actinide-binding affinities. Marine Chemistry 2011, 126, (1-4), 27-36.
11. Zhang, S., K .A. Schwehr, Y. -F. Ho, Xu, C., Roberts, K.A., Kaplan, D.I., Brinkmeyer, R., Yeager, C.M., and Santschi, P.H. A novel approach for the simultaneous determination of iodide, iodate and organo-iodide for 127I and 129I in environmental samples using Gas Chromatography-Mass Spectrometry. Environ. Sci. Technol. 2010, 44, 9042–9048.
12. Zhang, S., Xu, C., and Santschi, P.H. Chemical composition and 234Th (IV) binding of extracellular polymeric substances (EPS) produced by the marine diatom Amphora sp. Marine Chemistry 2008, 112: 81–92.

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