Bolivar, J. P.García-Tenorio García-Balmaseda, RafaelMás Balbuena, José Luis2024-04-152024-04-151998Bolivar, J.P., García-Tenorio García-Balmaseda, R. y Más Balbuena, J.L. (1998). Radioactivity of phosphogypsum in the south-west of Spain. RADIATION PROTECTION DOSIMETRY, 76 (3), 185-189. https://doi.org/10.1093/oxfordjournals.rpd.a032263.1742-3406https://hdl.handle.net/11441/156864Phosphogypsum is the by-product of producing phosphoric acid by reacting phosphate rock with sulphuric acid. In the south-west of Spain, and near the town of Huelva, there is a big industrial complex with some factories devoted to the production of phosphoric acid, which produce annually 3 X 106 metric tonnes of phosphogypsum. Of this amount 80% is stored in nearby sites named 'gyp-stacks'. The phosphate rock treated in these factories for the production of phosphoric acid has 238U activities between 1000 and 1600 Bq.kg-1, being their daughters in approximately secular equilibrium. A fraction of these radionuclides, and in different proportion, goes with the phosphogypsum. The radionuclide activity concentrations in various phosphogypsum samples collected at different places in the gyp-stacks are given, and an average dose rate in air due to gamma rays at a point 1 m above these areas is also determinedapplication/pdf4engAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Gamma radiationRadiation detectionRadiation exposureRadiation protectionPhosphateHuelvaSpaininfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1093/oxfordjournals.rpd.a032263