Exposure rates and radiation doses due to ambient gamma rays/Anbar governorate. | ||
| Journal of University of Anbar for Pure Science | ||
| Article 27, Volume 3, Issue 3, December 2009, Pages 90-100 PDF (511.97 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.37652/juaps.2009.37789 | ||
| Authors | ||
| Kamal K. Ali* 1; Bahaa A. Marouf2; Zohear D. Al-Shaikh3 | ||
| 1University of Baghdad- collage of science | ||
| 2Ministry of science and technology – Iraq | ||
| 3University of Baghdad – collage of science | ||
| Abstract | ||
| Radiation exposure rates and radiation doses were measured in 174 locations in the Western Desert. Exposure rates were measured 1m above the ground with NaI (Tl) scintillation detector. Total radiation doses due to external exposure to the ambient gamma ray in the same previous locations were measured with FAG-FH 40 F2. The radioactivity concentrations of 238U, 232Th and 40K in selected soil and rocks samples were measured using gamma spectroscopy system based on high purity Germanium detector. Then, absorbed doses due to presence of 238U, 232Th and 40K in the samples were estimated. The exposure rates ranged between (5.0-71.7) ىR/h, while the average of radiation dose due to the exposure to ambient gamma ray ranged between (0.7-3.32) mSv/y. Doses due to expose to the concentrations of 238U, 232Th and 40K in the soil and rocks of the Western Desert were calculated. The average of these exposure doses ranged between (0.03-1.84)mSv/y. | ||
| Keywords | ||
| Exposure rates; Radiation; ambient; gamma rays; anbar | ||
| References | ||
|
1. ICRP, Principles for limiting exposure of the public to natural sources of radiation. ICRP Publication 39, Pergamon press, UK, 1984.
2. Eisenbud, M., and Gesell, T., Environmental Radioactivity, 4th edition, Academic press, USA. 1997.
3. J.S.Jun, Assessment of natural exposure rate in Korea. In radiation risk protection, proceedings of sixth international congress of international radiation protection association. West Berlin: 88-94, 1984.
4. T.C. Chu, P.S. Weng and Y.M. Lin, Changes in per capita and collective dose equivalent due to natural radiation in Taiwan (1950-1983). Health Phys. 56, 201-217,1989.
5. R, Buchli and W, Burkart, Correlation among the terrestrial gamma radiation, the indoor air Rn-222 and tap water in Switzerland. Health Phys. 57, 753-759, 1989.
6. F. P. Banzi, P. Msaki, and I. N. Makundi, A survey of background radiation doses rates and radioactivity in Tanzania, Health physics. Vol.82, 2002.
7. United Nation Sources, effects and risk of ionizing radiation. UNSCEAR, New YORK, United Nation, 1988.
8. B.A.Marouf, Environmental radioactivity monitoring program in Iraq. Out look and results. International J. Environ. Studies, 41, 169-172, 1992.
9. B.A. Marouf and etal, Population dose from environmental gamma radiation in Iraq. Health Phys. 62, 443-444, 1993.
10. B.A.Marouf., measurement of radionuclides into Iraq during 1987 (post Chernobyl) . Intern. J. Environmental Studies, Vol. 42, pp. 137-143, 1992, U.K.
11. B.A.Marouf., Gamma radiation dose to Iraqi population due to the Chernobyl accident. Radiation Prot. Dosim. 42,55-56, 1992
12. Buday, T., and Hak, J., Report on the geological survey of the Western part of the Western Desert. Iraq, Geosurv. Iraq. Internal report. No.1000, 1980.
13. AL-Mubarak, M., and Amin, R.M., Regional mapping of the South and Western Desert of Iraq. Geosurv. Iraq, 1983.
14. Jassim, S. Z., Karim, S.A., Basi, M.A., AL- Mubarak, M.A., and Tawfiq, J.M., Final report of the regional geological survey of Iraq. Vol. 3. Stratigraphy, Geosurv. Iraq, 1984.
15. AL-Bassam, K., Karim, S.A., Mahmoud, K., Yakta, S.A., Saeed, L.K., and Salman, M. Geological survey of the Upper Cretaceous – Lower Tertiary phosphorite - bearing sequence. Western Desert, Iraq, Geosurv. Lib. No. 2008, Baghdad, 1990.
16. Geological map of Iraq, scale 1:1000000, Geosurv., Iraq, I986.
17. B.A. Marouf and etal, Assessment of the exposure rate and collective effective dose equivalent in the city of Baghdad due to natural gamma radiation. Thr sci. Tot. Environment. 133,133-137,1993.
18. UNSCEAR, “Sources and Effects of Ionizing Radiation” United Nations Scientific Committer on the Effects of Atomic Radiation”, UNSCEAR Report to the General Assembly, United Nations, 1993.
19. Eisenbud, M., Environmental Radioactivity, 3rd edition, Academic press, USA. 1987.
20. International Atomic energy Agency, Radiological conditions at Bikini Atoll, prospects for resettlement. STI/PUB/1054. IAEA, Vienna, 1998.
21. Marouf B.A., Ali K.K., Hussian N.A. and Khalil H.S., Radiation doses due to background radiation in Babylon governerate. J. of Babylon Unv., Vol. 5, No. 3, 1999.
22. UNSCEAR, 2000. Sources and Effects of Ionizing Radiation. Report of the United
Nations Scientific Committee on the Effects of Atomic Radiation to the General
Assembly. United Nations, New York.
23. UNSCEAR, Sources and effect of ionizing radiation, United Nations Scientific Committer on the effect of Atomic Radiation, UNSCEAR Report to the General assembly, United Nation,1993.
24. Internal basic safety standards for protection against ionizing radiation and for the safety of radiation sources . Safety Series, No. 115, IAEA, Vienna, 1996. | ||
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