Use of a Heterogeneity-Based Isotherm to Interpret the Transport of Reactive Radionuclides in Volcanic Tuff Media

摘要

The sorption of cesium and strontium has been modeled with a heterogeneity-based isotherm equation for various tuff materials including those within a sequence of geologic stratigraphic units. The theory of the isotherm foresees the relative retardation and the chemical dispersion of the studied radionuclides during transport. The concepts of heterogeneity of sites and variability in the maximum number of sites available for sorption are incorporated into the model. 16 refs., 4 figs., 3 tabs. (ERA citation 13:000335)