Assessment of radioactivity levels in some oil samples from the western desert, Egypt

Assessment of radioactivity levels in some oil samples from the western desert, Egypt 1 corresp first-author Corresponding author: E-mail: mousa_19@yahoo.com Corresponding author: E-mail: mousa_19@yahoo.com mousa_19@yahoo.com 1 1 Physics Department, Faculty of Science, South Valley University, Qena, Egypt Physics Department, Faculty of Science, South Valley University, Qena, Egypt Distributions of natural gamma-emitting radionuclides were determined in 93 oil samples collected from some petroleum fields in the western desert of Egypt. The radioisotope activities in the area under investigation lay in the range of (21 ± 4) to (38 ± 13) Bq•L -1 for 226 Ra, (9 ± 2) to (15 ± 5) Bq•L -1 for 232 Th, and (154 ± 28) to (303 ± 54) Bq•L -1 for 40 K. The mean values were 27, 12, and 201 Bq•L -1 , respectively. Among oils, variations in radionuclide activities could be on account of differences in TDS, HCo 3, and Ba, with high or low pH. In this environment, oil properties differently affected the mobilization of natural radionuclides. The range of 226 Ra variation had been compared with available data from other countries. The calculated absorbed dose rate ranged from 22.33 to 32.66 nGy•h -1 in location (B) and (E) respectively, which was less than the accepted value. Radionuclides Oil Activities Absorbed dose rate References Marril E , Gesell T . Environmental radioactivity: From natural, industrial, and military source . 4 th ed. New York : Academic press , 1997 . Environmental radioactivity: From natural, industrial, and military source International Commission on Radiological Protection , Recommendations of the International Commission on Radiological Protection, ICRP Publication 60 , Annals of the ICRP , Vol. 21 , NI 1-3 , Oxford : Pergamon Press , 1991 . Recommendations of the International Commission on Radiological Protection, ICRP Publication 60 Rood A S . Measurement of 222Rn flux, 222Rn emanation and 226Ra concentration from injection well pipe scale . The 29th Midyear Topical Meeting of the Health Physics Society , Scottsdale, AZ, United States , 7-10 January, 1996 . OSTI as DE96007275 : 10 . Measurement of 222Rn flux, 222Rn emanation and 226Ra concentration from injection well pipe scale Gray P . Journal of Petroleum Technology January , 1993 , ( 3 ): 12 - 16 . Journal of Petroleum Technology January Smith A L . Journal of Petroleum Technology , 1987 , ( 6 ): 697 - 706 . Journal of Petroleum Technology Kvasnicka J . Radiation protection in the offshore petroleum industry . Proceedings of 9th World Congress of the International Radiation Protection Association , Vienna, Austria , 14-19 April 1996 : 621 - 623 . Radiation protection in the offshore petroleum industry Adams J A S , Gasparini P . Gamma-ray spectrometry of rocks . Amsterdam : Elsevier , 1970 : 295 . Gamma-ray spectrometry of rocks Quindos L S , Fernandez P l , Soto J , et al . Health Phys , 1994 , 66 : 194 - 200 . Health Phys Beck H L , Decompo J , Gologak J . In situ Ge(Li) and NaI(Tl) gamma ray spectrometry . New York : Health and Safety Laboratory AEC ; In situ Ge(Li) and NaI(Tl) gamma ray spectrometry Beck H L , Decompo J , Gologak J . In situ Ge(Li) and NaI(Tl) gamma ray spectrometry. Report HASL258 , 1972 . In situ Ge(Li) and NaI(Tl) gamma ray spectrometry. Report HASL258 UNSCEAR . United Nations Scientific Committee on the Effects of Atomic Radiation, Exposure from natural sources of radiation. Report to the General Assembly, 93-828711 , 1993 . United Nations Scientific Committee on the Effects of Atomic Radiation, Exposure from natural sources of radiation. Report to the General Assembly, 93-828711 Saito K , Petroussi-Henss N , Zankl M . Health Physics , 1998 , 74 : 698 - 706 . Health Physics Smith K P , Blunt D L , Williams G P , et al . An assessment of the disposal of petroleum industry norm in nonhazardous landfills. (OSTI ID: 13061) Argonne National Laboratory , Environmental Assessment Division , Lakewood, Colorado, USA , 1999 . An assessment of the disposal of petroleum industry norm in nonhazardous landfills. (OSTI ID: 13061) Argonne National Laboratory Diyashev R N , Takhautdinov S F , Antonov G P . Soc Pet Engng , 1994 : 27216 . Soc Pet Engng Snavely E S . Radionuclides in produced water-a literature review. Report to American Petroleum Institute Publication, No.5404 , Washington, DC , 1989 : 1 - 85 . Radionuclides in produced water-a literature review. Report to American Petroleum Institute Publication, No.5404 Hamlat M S , Djeffal S , Kadi H . Applied Radiation and Isotopes , 2001 , 55 : 141 - 146 . Applied Radiation and Isotopes 10.1016/S1001-8042(07)60031-1 TE622.1 + 4,TB98,O615.3 2006-05-24 2007-04-20 2021-01-19 2007 Nuclear Science and Techniques 02 18