干旱区生态环境知识资源中心(Arid): Measurement of natural radioactivity in granites and its quartz-bearing gold at El-Fawakhir area (Central Eastern Desert), Egypt

Arid

DOI	10.1016/j.jrras.2015.02.005
	Measurement of natural radioactivity in granites and its quartz-bearing gold at El-Fawakhir area (Central Eastern Desert), Egypt
	Uosif, M. A. M.; Issa, Shams A. M.; El-Salam, L. M. Abd
通讯作者	Uosif, MAM
来源期刊	JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES
ISSN	1687-8507
出版年	2015
卷号	8 期号:3 页码:393-398
英文摘要	The distribution of natural radionuclides (Ra-226, Th-232 and K-40) in Granites and its quartz-bearing gold at El-Fawakhir area (Central Eastern Desert, Egypt) were measured by using gamma-ray spectroscopy [NaI (Tl) 3 '' x 3 '']. X-Ray Fluorescence technique was used for chemical analyses of the studied samples. The specific activity of Ra-226, Th-232 and K-40 values are in range (3 +/- 0.5 to 43 +/- 2 Bqkg(-1)), ( 5 +/- 0.7 to 41 +/- 2 Bqkg(-1)) and (128 +/- 6 to 682 +/- 35 Bqkg(-1)) respectively. The absorbed dose rates ranged from 13.8 to 58.4 nGy h(-1), where the total effective dose rates were determined to be between 16.7 and 70.9 mu Svy(-1). The maximum external hazard index (H-ex) is 0.3 nGyh(-1). The calculated values of the excess lifetime cancer risks (ELCR) and annual effective dose rate values are in between (8.48 x 10(-5) and 2.63 x 10(-4)) and (24.2 and 72.9 mu Svy(-1)) respectively. Geochemically, the studied granites consist of major oxides, they are characterized by SiO2, K2O, Na2O, Al2O3, and depleted in CaO, MgO, TiO2, and P2O5. The average absorbed dose rate (D-o) in air is 37.8 nGyh(-1) for the whole studied samples, this value is about 3.78% of the 1.0 mSvy(-1) recommended by (ICRP-60,1991) to the public, so there is no radiological risk for the workers in that area. Copyright (C) 2015, The Egyptian Society of Radiation Sciences and Applications. Production and hosting by Elsevier B.V.
英文关键词	Natural radionuclides Granite rocks Radiological Hazards Excess lifetime cancer risks
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000215715500016
WOS类目	Multidisciplinary Sciences ; Radiology, Nuclear Medicine & Medical Imaging
WOS研究方向	Science & Technology - Other Topics ; Radiology, Nuclear Medicine & Medical Imaging
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331040
作者单位	[Uosif, M. A. M.; Issa, Shams A. M.] Al Azhar Univ, Fac Sci, Dept Phys, Assiut Branch, Cairo, Egypt; [Issa, Shams A. M.] Fac Sci, Dept Phys, Tabuk, Saudi Arabia; [El-Salam, L. M. Abd] Al Azhar Univ, Fac Sci, Dept Geol, Cairo, Egypt
推荐引用方式 GB/T 7714	Uosif, M. A. M.,Issa, Shams A. M.,El-Salam, L. M. Abd. Measurement of natural radioactivity in granites and its quartz-bearing gold at El-Fawakhir area (Central Eastern Desert), Egypt[J],2015,8(3):393-398.
APA	Uosif, M. A. M.,Issa, Shams A. M.,&El-Salam, L. M. Abd.(2015).Measurement of natural radioactivity in granites and its quartz-bearing gold at El-Fawakhir area (Central Eastern Desert), Egypt.JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES,8(3),393-398.
MLA	Uosif, M. A. M.,et al."Measurement of natural radioactivity in granites and its quartz-bearing gold at El-Fawakhir area (Central Eastern Desert), Egypt".JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 8.3(2015):393-398.