NATURAL RADIOACTIVITY AND ASSESSMENT OF THE INTERNAL DOSE OF WATER RESOURCES FOR SELECTED SITES IN EGYPT
Keywords:
Natural radioactivity, Water resources, AcuteDose calculator program, Annual doseAbstract
Purpose: The current study aims to assess the activity concentrations of 226Ra (238U series), 232Th series and 40K in different water resources in Egypt to determine its applicability for drinking process from the radiological view point.
Methodology: Forty five water samples (15 tap water samples, 15 ground water samples and 15 surface water samples) from selected sites in the area under investigation (along the Northern part of Egypt from Sinai governorate in the East to Marsa Matrouh governorate in the West) were analyzed using HPGe detector. The data obtained were used to calculate the annual dose for different organs from consumption of water for four age groups (5 years, 10 years, 15 years and adults) using AcuteDose calculator program.
Findings 40K is the only detected while 226Ra and 232Th in all samples under investigation are below the detection limit (0.7 and 0.6 Bq kg-1 respectively) of the used HPGe detector. The mean concentration from tap water is 1.06 BqL-1 and values ranged from < 3 to 5.30 Bq L-1. Ground water showed a mean of 1.01Bq L-1 and values ranged from < 3 to 5.16 Bq L-1 and in surface water, the mean was 3.16 Bq L-1 and values ranged from < 3 to 32.09 Bq L-1. For all water resources, the lower the age is the higher the dose delivered from 40K in water. For tap water, the highest annual dose delivered to 5 y age group (6.16 µSv y-1) with a mean of 1.32 µSv y-1 and the lowest annual dose was delivered to adults with a maximum of 1.79 µSv y-1 and a mean of 0.33 µSv y-1. For ground water, the highest annual dose (6.12 µSv y-1) delivered to 5 y age group with a mean of 1.35 µSv y-1, and the lowest annual dose was delivered to adults with a maximum of 1.71 µSvy-1 and a mean of 0.34 µSv y-1. All results of this work are below the maximum permissible limit for public exposure determined by ICRP.
Unique contribution to theory, practice and policy: Government and stakeholders should make funds available for more research to study the applicability of these water resources for drinking process from other points view such as chemical and biological toxicity.
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References
Abu Zeid, M. (1992). Water resources assessment for Egypt. International Journal of Water Resources Development, Vol. 1. Issue 2, 76-86.
Ahmed, N. K. (2004). Natural Radioactivity of Ground and Drinking Water in Some Areas of Upper Egypt. Turkish J Eng Env Sci., V(28). pp 345-354.
Choppin, G. R. and Rydberg, J. (1980). Nuclear Chemistry Theory and Applications, Pergamon Press.
Currie, L. A. (1968). Limits for qualitative detection and quantitative determination. Application to radiochemistry. Analytical Chemistry, V (40) (No) 3. PP 586-593.
El-Gamal, H. and Abdel Mageed AI. (2014).Natural Radioactivity in water samples from Assiut, Egypt. International Journal of Pure & Applied Sciences & Technolog, Vol. 22 Issue 1 pp 44-52.
Fakeha, A. A, Hamidalddin SQ, Alamoudy ZM, Al-Amri MA. (2011). Concentrations of natural radioactivity and their contribution to the absorbed dose from water samples from the Western Province, Saudi Arabia. JKAU
: Sci. Vol. 23 (No) 2. pp 17-30.
Farouk, M. (1996). Monitoring radioactive contamination in food, water sediments and other environmental samples in Egypt. Final report of Research project, Contract No. 7129/RB for the period 1st Oct. 1992- 31st July 1996, Report No. IAEA - R - 7129-F.
Fasunwon, O. O, Alausa, S. K, Odunaike, R. K, Alausa, I. M, Sosanya, F. M, Ajala, B. A. (2010). Activity concentrations of natural radionuclide levels in well waters of Ago Iwoye, Nigeria. Iran J Radiat Res. Vol. 7, Issue 4. pp 207-210.
Harb, S, El-Kamel, A. H, Zahran, A. M, Abbady, A. A, Ahmed, F. A, (2013). Natural radioactivity of ground water in some areas in Aden governorate South of Yemen Region. Radiat Prot Environ. Vol 36 Issue 1. pp115-121.
Karahan, G, Ozturk, N, Baylken, A. (2000). Natural radioactivity in various surface water in In Istanbul, Turkey. Water Res. Vol 34 Issue 18. pp 4367-4370.
Khalil F. A, Amin R. M, El Fayoumi M. A. K. (2009). Natural radioactive nuclides and chemical components in the groundwater of Beni Suef Governate, Middle Egypt. J Radiol Prot. Vol 29 Issue 1. pp105-112.
Madison (ed). (2005). Radiation Safety for Radiation Workers. (1st ed). Board of Regents University of Wisconsin system, UW-Madison safety department. pp222-224.
Mas, J. L, GarcÃa-León, M, GarcÃa-Tenorio, R, BolÃvar, J. P. (2006). Radionuclide Concentrations in Water. In: Radionuclide Concentrations in Food and the Environment. Pöschl M, Nollet LML (eds). Taylor & Francis, Boca Raton. pp 59-112.
Naidoo, S.  Olaniran, A. O. (2014). Treated Waste Water Effluent as Source of Microbial Pollution of Surface Water Resources. Int J Environ Res Public Health. Vol. 11. Issue 1. pp 249-270.
Pourimani, R.  Nemati, Z. (2014). Natural Radioactivity of Drinking Water Resources in Arak, Iran. Environ Studies Persian Gulf. Vol. (1). No. 2. pp 74-80.
Sorel, J., Gray, D.  Santodonato, J. Drinking Water Criteria Document For Copper (Final Draft, 1985). U.S. Environmental Protection Agency, Washington, D.C., EPA/600/X-84/190-1 (NTIS PB86118239).
UNSCEAR (United Nations Scientific Committee on the Effect of Atomic Radiation). (1993).
UNSCEAR (2001) United Nations Scientific Committee on the Effects of Atomic Radiation. Report on hereditary effects of radiation to the general assembly, Untied Nation.
Wakedford, R. (2004). The cancer epidemiology of radiation. Oncogene Vol 23. No. 38. pp 6404-6428.
Zakariya, N. I.  Kahn, M. (2014). Benefits and Biological effects of Ionizing Radiation. Sch. Acad. J. Biosci. Vol. 2. Issue 9. pp 583-591.
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