干旱区生态环境知识资源中心(Arid): Estimation of the natural radioactivity levels and rare earth elements concentration in the granitic rocks, Gabal Ghareb, Eastern Desert, Egypt

Arid

DOI	10.1007/s12665-021-09958-z
	Estimation of the natural radioactivity levels and rare earth elements concentration in the granitic rocks, Gabal Ghareb, Eastern Desert, Egypt
	Salaheldin, Ghada; Elhaddad, Mervat; El-Gamal, Hany
通讯作者	Salaheldin, G (corresponding author), Assiut Univ, Fac Sci, Phys Dept, Assiut 71516, Egypt.
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2021
卷号	80 期号:18
英文摘要	In this study, the major, rare earth elements and the natural radioactivity of thorium, radium, and potassium radionuclides of the granitic rock samples collected from Gabal (mountain) Ghareb, Eastern Desert of Egypt were determined. Inductively coupled plasma atomic emission spectrometry (ICP-AES), mass spectrometry (ICP-MS) and high purity germanium detector (HP Ge) were used. The geologic and radiometric surveys on Gabal Ghareb indicated that uranium mineralization is associated with shear zones and fractures following NNE-SSW and NW-SE. The uranium mineralization is localized along the NNE-SSE faults and trapped by fractures cutting these shear zone in the eastern part of Gabal Ghareb. The predominant rock types are granites, granodiorites, granosyenites and syenites of geochemical peraluminous character. The variation in the major oxides and REE elements concentration reflects magmatic differentiation and post magmatic hydrothermal alterations for the investigated samples. The radiological parameters measured are: radium equivalent activity index Ra-eq (199.89 Bq/kg), absorbed dose rate ADR (94.25 nGy/h), annual effective dose equivalent AEDE (0.46 mSv/yr), gamma index I-gamma (0.74), alpha index I-alpha (0.26), annual gonadal dose equivalent AGDE (668.10 mu Sv/yr), excess lifetime cancer risk ELCR (1.62 x 10(-3)), external and internal hazard indices H-ex and H-in (0.54 and 0.68). The multivariate Dendrogram cluster analysis showed good agreement with each other. A great care should be taken in consideration when dealing with the Ghareb rocks, as they cannot be used as construction material due to their radiological threat to population and radiation protection precautionary measures must be taken. Comparison between the radiological parameters of other areas from the northern and southern parts of Egypt were given.
英文关键词	Rare earth elements Gabal Ghareb Granitic rocks Radiological Natural radioactivity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000698381100003
WOS关键词	RADON EXHALATION ; SAMPLES ; DISTRICT ; HAZARDS ; SOIL
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363110
作者单位	[Salaheldin, Ghada; El-Gamal, Hany] Assiut Univ, Fac Sci, Phys Dept, Assiut 71516, Egypt; [Elhaddad, Mervat] Assiut Univ, Fac Sci, Geol Dept, Assiut 71516, Egypt
推荐引用方式 GB/T 7714	Salaheldin, Ghada,Elhaddad, Mervat,El-Gamal, Hany. Estimation of the natural radioactivity levels and rare earth elements concentration in the granitic rocks, Gabal Ghareb, Eastern Desert, Egypt[J],2021,80(18).
APA	Salaheldin, Ghada,Elhaddad, Mervat,&El-Gamal, Hany.(2021).Estimation of the natural radioactivity levels and rare earth elements concentration in the granitic rocks, Gabal Ghareb, Eastern Desert, Egypt.ENVIRONMENTAL EARTH SCIENCES,80(18).
MLA	Salaheldin, Ghada,et al."Estimation of the natural radioactivity levels and rare earth elements concentration in the granitic rocks, Gabal Ghareb, Eastern Desert, Egypt".ENVIRONMENTAL EARTH SCIENCES 80.18(2021).