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Abstrakty
. One of the main sources of public exposure from natural radioactivity is radium and radon and its short lived decay products. The aim of this study is focused on determining the concentration of mentioned radionuclides in the mineral water resources in one of the highest altitude regions (Zagros Mountains), the Chaharmahal and Bakhtiari province, in South-West Iran, namely the Dimeh springs. Eighty drinking spring water samples were taken from the Dimeh springs (ten samples for each spring) to determine radium-226 (226Ra) and radon-222 (222Rn) concentrations using the emanation method and a liquid scintillation counting method, respectively. The results of this study showed that the effective dose from the consumption of drinking water of Dimeh springs (6.4 žSv/y) is not comparable to the other annual effective dose such as inhalation of radon and its products in cosmic and terrestrial rays published by one of the authors previously. Also, the annual effective dose measured here is much lower than the worldwide mean value 0.45 mSv reported by USCEAR, 2000 and is also low enough and below the proposed limits in other countries and this is the reason why this sources of water may be considered as safe drinking water in the region.
Czasopismo
Rocznik
Tom
Strony
31--34
Opis fizyczny
Bibliogr. 17 poz., rys.
Twórcy
autor
autor
- Department of Medical Physics and Medical Engineering, School of Medicine, Isfahan University of Medical Science, Isfahan, Iran, Tel.: +98 311 7922495, Fax: +98 311 6688597, shahbazi24@yahoo.com
Bibliografia
- 1. Alirezazadeh N (2005) Radon concentrations in public water supplies in Teheran and evaluation of radiation dose. Iranian J Radiat Res 3;2:79–83
- 2. Al-Kazwini AT, Hasan MA (2003) Radon concentration in Jordanian drinking water and hot springs. J Radiol Prot 23:439–448
- 3. Bronzovic M, Marovic C (2005) Age-dependent dose assessment of 226Ra from bottled water intake. Health Phys 88;5:480–485
- 4. Cevik U, Damla N, Karahan G, Celebi N, Kobya AI (2006) Natural radioactivity in tap waters of Eastern Black Sea region of Turkey. Radiat Prot Dosim 118;1:88–92
- 5. Chereji I (1992) 222Rn (226Ra) determination in water by scintillation metod. J Radioanal Nucl Chem Lett 165:263–267
- 6. De Oliveira J, Mazzilli B, Sampa MH, Silva B (1998) Seasonal variations of 226Ra and 222Rn in mineral spring waters of Aguas de Prata, Brazil. Appl Radiat Isot 49;4:423–427
- 7. Fatima I, Zaidi JH, Arif M, Tahir SN (2007) Measurement of natural radioactivity in bottled drinking water in Pakistan and consequent dose estimate. Radiat Prot Dosim 123;2:234–240
- 8. Folger PF, Nyberg P, Wanty RB, Poeter E (1994) Relationship between 222Rn dissolved in groundwater supplies and indoor 222Rn concentration in some Colorado front range houses. Health Phys 67:244–252
- 9. Kendal GM, Smith TJ (2002) Dose to organs and tissues from radon and its decay product. J Radiol Prot 22:389–406
- 10. Kitto ME, Kim MS (2005) Naturally occurring radionuclides in community water supplies of New York state. Health Phys 88;3:253–260
- 11. Kralik C, Friedrich M, Vojir F (2003) Natural radionuclides in bottled water in Austria. J Environ Radioact 65;2:233–241
- 12. Kusyk M, Mamont-Cieśla K (2002) Radon levels in household waters in southern Poland. Nukleonika 47:65–68
- 13. Savidou A, Sideris G, Zouridakis N (2001) Radon in public water supplies in Migedonia Basin, central Macedonia, northern Grece. Health Phys 80:170–174
- 14. Shahbazi-Gahrouei D (2003) Natural background radiation dosimetry in the highest altitude region of Iran. J Radiat Res 44;3:285–287
- 15. Shahbazi-Gahrouei D (2003) Possible effect of background radiation on cancer incidence in Chaharmahal and Bakhtiari Province. Iranian J Radiat Res 1;3:171–174
- 16. Stein L (1987) Chemical properties of radon. In: Hopke PK (ed) Radon and its decay products: occurence, properties and health effects. American Chemical Society, Washington, DC, pp 240–251
- 17. UNSCEAR (2000) Sources and effects of ionizing radiation. Report to the General Assembly, with scientific annexes. United Nations Scientific Committee on Effects of Atomic Radiation, New York
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ6-0023-0018