A process for purifying radium from various sources

A method for recycling of a) detecting the quality of the to be cleaned Ra-containing solution is placed in a mineral acid solution available; b) concentrating the Ra-containing solution by evaporation; c) removing the traces of organic compounds by means of a prefilter, wherein the Vorfiltersaure is an inert solid support material; d) performing at least one cation exchange chromatography for separation of Ra the major chemical impurities, wherein the cation exchange chromatography in step d) is carried out on a cation exchanger, and preferably on an acidic macroporous cation exchanger e) washing the cation exchange resin with niedermolarer mineral acid to remove the major chemical impurities; f) elution of Ra from the cation exchange resin with high molecular weight mineral acid, wherein the fractions still contain elements that are chemically similar, such as Ba and Sr; g) pooling ...