Dr. Chen Xu

Dr. Chen Xu
Assistant Research Scientist
E-mail: xuc@tamug.edu
Phone: (409) 740-4530
(409) 740-4429
Website: loer.tamug.edu/Xu/

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Ph.D., Chemical oceanography, Texas A&M University, 2011
M.Sc., Chemical oceanography, Texas A&M University, 2008
B.Sc., Environmental Sciences, Xiamen University, Xiamen, Fujian, Peoples Republic of China, 2004

Professional Experience:

12/2012-present    Assistant research scientist, Texas A&M University at Galveston
09/2011-11/2012   Post-Doc., Marine Sciences, Texas A&M University at Galveston


  • Welch Foundation Fellowship (Grant BD-0046; Spring, 2009)
  • Erma Lee and Luke Mooney Graduate Student Excellence Research Award (2008)
  • Student Travel Fellowship recognized by Department of Energy-Subsurface Biogeochemical Research (DOE-SBR) program to attend the annual PI meeting in Washing DC (April 26-28, 2011).
  • Association of Former Students (AFS) Distinguished Graduate Student Award for Excellence in Research, Doctoral awarded by Texas A&M University, 2012.

Peer-reviewed Publications:

  1. Xu, C.; Zhang, S.; Sugiyama, Y.; Ohte, N.; Ho, Y.-F.; Fujitake, N.; Kaplan, D. I.; Yeager, C. M.; Schwehr, K.; Santschi, P. H., Role of natural organic matter on iodine and 239,240Pu distribution and mobility in environmental samples from the northwestern Fukushima Prefecture, Japan. Journal of Environmental Radioactivity 2016, 153, 156-166.
  2. Xu, C.; S., Z.; kaplan, D.; Ho, Y.-F.; Schwehr, K.; Roberts, K. A.; Chen, H.; DiDonato, N.; Athon, M.; Hatcher, P.; Santschi, P., Evidence for hydroxamate siderophores and other N-containing organic compounds controlling 239,240Pu immobilization and re-mobilization in a wetland sediment. Environmental Science & Technology 2015, 49, (19), 11458-11467.
  3. Xu, C.; Zhang, S.; Athon, M.; Ho, Y.-F.; Li, H. P.; Yeager, C. M.; Schwehr, K. A.; Kaplan, D.; Russell, G.; Wellman, D.; Santschi, P. H., Radioiodine sorption/desorption and speciation transformation by subsurface sediments from the Hanford Site. Journal of Environmental Radioactivity, 2015. 139, 43-55
  4. 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. Environmental Science & Technology 2014, 48, 3186-3195.
  5. Xu, C., Athon, M., Ho, Y.-F., Schwehr, K.A., Kaplan, D.I., Roberts, K.A., DiDonato, N., Hatcher, P.G. & Santschi, P.H. Mineralogical Magazine, 2013, 77(5) 2524
  6. Xu, C., Chen, H., Sugiyama, Y., Zhang, S., Li, H.-P., Ho, Y.-F., Chuang, C.-Y., Schwehr, K.A., Kaplan, D.I., Yeager, C., Roberts, K.A., Brinkmeyer, R., Hatcher, P.G., Santschi, P.H. Novel molecular-level evidence of iodine binding to natural organic matter from Fourier transform ion cyclotron resonance mass spectrometry. Science of the Total Environment. 2011, 449, 244-252.
  7. Xu, C.; Zhong, J. Y.; Hatcher, P. G.; Zhang, S.; Li, H. P.; Ho, Y.; Schwehr, K. A.; Kaplan, D. I.; Roberts, K. A.; Brinkmeyer, R.; Yeager, C. M.; Santschi, P. H., Molecular environment of stable iodine and radioiodine (129I) in natural organic matter: Evidence inferred from NMR and binding experiments at environmentally relevant concentrations. Geochimica Et Cosmochimica Acta 2012, 97, 166-182.
  8. Xu, C.; Miller, E. J.; Zhang, S. J.; Li, H. P.; Ho, Y. F.; Schwehr, K. A.; Kaplan, D. I.; Otosaka, S.; Roberts, K. A.; Brinkmeyer, R.; Yeager, C. M.; Santschi, P. H., Sequestration and Remobilization of Radioiodine (I-129) by Soil Organic Matter and Possible Consequences of the Remedial Action at Savannah River Site. Environmental Science & Technology 2011, 45, (23), 9975-9983.
  9. Xu, C.; Zhang, S.; Ho, Y.-F.; Miller, E. J.; Roberts, K. A.; Li, H.-P.; Schwehr, K. A.; Otosaka, S.; Kaplan, D. I.; Brinkmeyer, R.; Yeager, C. M.; Santschi, P. H., Is soil natural organic matter a sink or source for mobile radioiodine (I-129) at the Savannah River Site? Geochimica Et Cosmochimica Acta 2011, 75, (19), 5716-5735.
  10. Xu, C.; Zhang, S. J.; 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. Xu, C.; Santschi, P. H.; Hung, C. C.; Zhang, S. J.; Schwehr, K. A.; Roberts, K. A.; Guo, L. D.; Gong, G. C.; Quigg, A.; Long, R. A.; Pinckney, J. L.; Duan, S. W.; Amon, R.; Wei, C. L., Controls of (234)Th removal from the oligotrophic ocean by polyuronic acids and modification by microbial activity. Marine Chemistry 2011, 123, (1-4), 111-126.
  12. Xu, C.; Santschi, P. H.; Schwehr, K. A.; Hung, C. C., Optimized isolation procedure for obtaining strongly actinide binding exopolymeric substances (EPS) from two bacteria (Sagittula stellata and Pseudomonas fluorescens Biovar II). Bioresource Technology 2009, 100, (23), 6010-6021.
  13. 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., Colloidal Cutin-Like Substances Cross-Linked to Siderophore Decomposition Products Mobilizing Plutonium from Contaminated Soils. Environmental Science & Technology 2008, 42, (22), 8211-8217.

Invited seminars:

  • Molecular level characterization and mobility of radionuclide-carrying natural organic matter in aquatic environments. Departmental Seminar, Department of Oceanography, College Station, TX. Sept. 5th, 2011.
  • Molecular level characterization and mobility of radionuclide-carrying natural organic matter in aquatic environments. Seminar, College of Oceanography and Environmental Science, Xiamen University, Oct 7, 2011.

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