title: Radiological assessment of Abu-Tartur phosphate, Western Desert Egypt.
abstract: The contents of natural radionuclides ((226)Ra, (232)Th and (40)K) were measured in sedimentary phosphate rock samples (Abu-Tartur phosphate, Western Desert Egypt) by using gamma spectrometry (NaI (Tl) 3"x 3"). Phosphate and environmental samples were collected from Abu-Tartur phosphate mine and the surrounding region. The results are discussed and compared with the levels in phosphate rocks from different countries. The activities of (226)Ra, (232)Th series and (40)K are between (14.9 +/- 0.8 and 302.4 +/- 15.2), (2.6 +/- 1.0 and 154.9 +/- 7.8) and (10.0 +/- 0.5 and 368.4 +/- 18.4) Bq kg(-1), respectively. The Abu-Tartur phosphate deposit was found to have lower activity than many others exploited phosphate sedimentary deposits, with its average total annual dose being only 114.6 microSv y(-1). This value is about 11.46% of the 1.0 mSv y(-1) recommended by the International Commission on Radiological Protection (ICRP-60, 1990) as the maximum annual dose to members of the public.
authors.affiliation: Department of Physics, Faculty of Science, Al-Azhar University, Assuit Branch, Egypt. Dr_Mohamed_Amin@Lycos.com
authors.forename: M A M
authors.initials: MA
authors.lastname: Uosif
authors.forename: A
authors.initials: A
authors.lastname: El-Taher
mesh_terms: D004534:Egypt; D019015:Geologic Sediments / Q000032:analysis*; D008906:Mining; D010710:Phosphates / Q000737:chemistry*; D011197:Potassium Radioisotopes / Q000032:analysis*; D011883:Radium / Q000032:analysis*; D013051:Spectrometry, Gamma; D013910:Thorium / Q000032:analysis*
chemical_list: D010710:Phosphates; D011197:Potassium Radioisotopes; D013910:Thorium; D011883:Radium