Research Highlights

Research

A Regional Model For Uranium Redox And Mobility

  Subtitle: Redox variable sediments mediate uranium mobility in the upper Colorado River Basin. The Science               ...
December 15, 2017
Anoxic organic enriched sediments.
Research

Iron And Sulfur Cycling In NRZs Controlled By Sediment Textural And Hydrology

  https://doi.org/10.1016/j.scitotenv.2017.01.109 Detailed characterization of the molecular structures of Fe and S, on depth-resolved field samples from floodplain sediments, were performed using x-ray absorption...
December 15, 2017
Chart to the solute exchange from low to high
Research

U Release From NRZ Sediments Is Inhibited By Transport And Geochemistry

Oxidative release of U(IV) from NRZs is slow because of low diffusivity, rapid consumption of oxidants by the sediments, and rapid U(VI) re-reduction  ...
September 6, 2017
Redox cycling in NRZs
Research

Thermodynamic Preservation Of Carbon In Anoxic Environments

  Thermodynamically controlled preservation of organic carbon in floodplains | Nature Geoscience   A new study combining X-ray absorption spectroscopy (XAS) at SSRL with...
May 1, 2017
A chart of the Anaerobic C degradation in sulfidic and non-sulfidic zones
Research

Sorption To Organic Matter Controls Uranium Mobility

  http://www.pnas.org/content/114/4/711.abstract A new multi-technique study using X-ray absorption spectroscopy at SSRL, nanoscale secondary Ion mass spectroscopy at EMSL, and scanning transmission X-ray microscopy...
January 9, 2017
Organics and cells in water