Nanoparticles in Subsurface Environments: Abundance and Transport of the Mobile Fraction
Jiamin Wan, Guilin Han, Jasquelin Pena, Xiang-Yun Song, and Tetsu Tokunaga
Contact: Jiamin Wan, 510/486-6004, JMWan@lbl.gov
Research Objectives
The earth science community has identified environmental nanoscience as an important emerging field. This project provides the first survey of mobile nanoparticle inventories for sediments from a variety of subsurface environments. The research will also provide systematic studies of subsurface nanoparticle transport and its dependence on nanoparticle, sediment, solution, and hydraulic characteristics.
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 U(VI) nanoparticles (marked by arrows and circles) obtained from a pore solution of U contaminated sediment. Based on lattice fringe (by TEM) and elemental composition (by EDX) analyses, the particles are identified as sodium uranium oxide phosphate hydrate,Na4U3O8(PO4).6H2O (Wan et al, unpublished).
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