干旱区生态环境知识资源中心(Arid): Estimation of Natural Radionuclides and Rare Earth Elements Concentration of the Rocks of Abu Khuruq Ring Complex, Egypt

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DOI	10.3390/sym11081041
	Estimation of Natural Radionuclides and Rare Earth Elements Concentration of the Rocks of Abu Khuruq Ring Complex, Egypt
	El-Gamal, Hany 1; El-Haddad, Mervat 2
通讯作者	El-Gamal, Hany
来源期刊	SYMMETRY-BASEL
EISSN	2073-8994
出版年	2019
卷号	11 期号:8
英文摘要	The naturally occurring radionuclides (radium-226, thorium-232, potassium-40 and radon-222) were investigated in the alkaline rocks of Abu Khuruq Ring, southern Eastern Desert, Egypt. A high-resolution germanium detector was used for the detection of K-40, Th-232, and Ra-226 (Canberra, GR4020 model) while Rn-222 concentration was measured by the Alpha-Guard Saphymo GmbH system, model PQ 2000 (AG). Major and rare earth elements (REEs) were assessed using the inductively coupled plasma mass spectrometry and atomic emission spectrometry techniques. Positive correlations were observed between REEs, indicating symmetrical chemical properties and their overall presence in the parent material-also, a positive correlation was observed between effective radium content and radon concentrations pointing to the strong linear dependency between both contents in the studied rocks. The average values of activity concentration of K-40, Th-232, Ra-226, and Rn-222 were less than the suggested level by a factor of 1.38%, 3.16%, 2.09%, and 1.16%, respectively. Significant variations were found among the radiological hazards parameters, e.g., the mean value of the annual effective dose (0.55 mSv y(-1)) was more than the global reference value (0.41 mSv y(-1)) by a factor of 1.34. The calculated average value of the gamma index was 0.90, and that of the alpha index was 0.37. H-ex, H-in and Ra-eq showed fewer average values than the standard values of unity and 370 Bq kg(-1), respectively.
英文关键词	Alpha-Guard HPGe radon REE alkaline rock Abu Khuruq
类型	Article
语种	英语
国家	Egypt
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000483559300095
WOS关键词	BUILDING-MATERIALS ; RADON EXHALATION ; EASTERN DESERT ; RADIOACTIVITY ; SAMPLES ; GEOCHEMISTRY ; HAZARDS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219041
作者单位	1.Assiut Univ, Fac Sci, Phys Dept, Assiut 71516, Egypt; 2.Assiut Univ, Fac Sci, Geol Dept, Assiut 71516, Egypt
推荐引用方式 GB/T 7714	El-Gamal, Hany,El-Haddad, Mervat. Estimation of Natural Radionuclides and Rare Earth Elements Concentration of the Rocks of Abu Khuruq Ring Complex, Egypt[J],2019,11(8).
APA	El-Gamal, Hany,&El-Haddad, Mervat.(2019).Estimation of Natural Radionuclides and Rare Earth Elements Concentration of the Rocks of Abu Khuruq Ring Complex, Egypt.SYMMETRY-BASEL,11(8).
MLA	El-Gamal, Hany,et al."Estimation of Natural Radionuclides and Rare Earth Elements Concentration of the Rocks of Abu Khuruq Ring Complex, Egypt".SYMMETRY-BASEL 11.8(2019).