Recent Poster click on images to enlarge Ligand-Promoted Hematite Dissolution I ron is an essential micronutrient in the health of plants and microorganisms. Organic acids exuded by both plants and microorganisms increase the total solubility of these minerals by forming aqueous Fe-ligand complexes. In other cases, the overall dissolution rate may instead be inhibited or unaffected. Employing both batch and flow-through reactors, we are currently investigating the effects of dicarboxylic organic acids on hematite dissolution. Dr. Sherry Samson , postdoctoral associate Recent Poster Dissolution Rates and Mechanisms of Isostructural Carbonate Minerals Investigated by Macroscopic and Microscopic Methods Carbonate dissolution profoundly influences the chemistry of natural waters.
Important uncertainties remain in the dissolution rates and mechanisms.
By these methods, we quantitatively relate microscopic surface processes to macroscopic dissolution rates. The activity of atmospheric particles depends strongly on phase - wet, large particles are chemically active while dry, small particles are inert. This page last modified May 3, 2001.