Abstract In this work we present results of a study concerning the distribution and behaviour of several natural radionuclides (U, Th-isotopes, 210Po and gamma-emitters) in a mining river located in the southwest of Spain. Enhancements of U concentrations relative to other analysed isotopes within the U series have been observed, being due to co-precipitation of Read more about Natural radioactivity in waters and sediments from a Spanish mining river[…]