Survey and review of near-field performance assessment

Sorption models for radionuclides from waste repositories are overviewed. Distribution coefficients for traces of an aqueous phase are described by transport models. Isotherm absorption models; simple mass-action models (e.g.; ion exchange), and surface-complexation models (like the Diffusion Layer Model, the Constant Capacitance Model and the Triple Layer Model) are discussed. (R.P.) 1 fig., 1 tab