Radionuclide transport by pocos de caldas plateau rivers, Brazil

Abstract
Mass balance of Ra‐226 and U‐238 was used to assess the pollutant discharge from uranium mining and milling and to identify the main physical and chemical processes involved in radionuclide transport. The load value remains unchanged along the rivers although a decrease of radionuclide concentration was observed. Seasonal load variations are influenced by mobilization of sediments during wet periods. Soluble load is the principal form of radionuclide transport at Poços de Caldas Plateau.