H. El-Didamony, M. M. Ali, N. S. Awwad, M. F. Attallah, M. M. Fawzy
Preparation of uncontaminated phosphogypsum (PG) produced by wet-process
phosphoric acid plant for its safe use in industry was investigated. PG is
mainly composed of calcium sulfate and contains enhanced natural radioactivity.
The activity of 238U, 226Ra, 210Pb, 232Th, and 40K in PG samples was measured by
γ-ray spectrometry. The values of radiation hazard indices, calculated to
evaluate the envi... hiện toàn bộ