干旱区生态环境知识资源中心(Arid): Mobilisation of radionuclides during uranium and gold processing of granitic rock at El-Missikate area, central Eastern Desert, Egypt

Arid

DOI	10.1080/03067319.2021.1925262
	Mobilisation of radionuclides during uranium and gold processing of granitic rock at El-Missikate area, central Eastern Desert, Egypt
	El-Fekya, Mohamed Galal; Mohammed, Hesham Samir; El-Shabasy, Ahmed Mohammed; Ahmed, Mohammed Ramadan; Abdel-Monem, Yasser Kamal; Mira, Hamed Ibrahim
通讯作者	Mohammed, HS (corresponding author), Nucl Mat Author, Prod Sect, Cairo, Egypt.
来源期刊	INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
ISSN	0306-7319
EISSN	1029-0397
出版年	2021-05
英文摘要	The present work is concerned with the fractionations of U-238, Th-230, Ra-226,Pb-214, Bi-214, U-235, Ac-228, Tl-208 and K-40 in sulphuric acid leaching and solvent extraction of uranium, in addition to, thiourea leaching of gold. The activity concentrations of the studied radionuclides indicate that uranium isotopes are highly leachable (89-90%) in sulphuric acid, while Th-230 and Tl-208 are leached with efficiency of about 76% and 71%, respectively. Less than 35% of Ra-226,Pb-214, Bi-214 and Ac-228 are leached. In solvent extraction processes, uranium isotopes are selectively extracted and stripped. While Tl-208 extraction was only 13%. Most of Th-230, Ra-226, Pb-214 and K-40 could not be extracted at such pH. The leachability of the studied radionuclides was significantly low using acidic thiourea. The dose rate and radium equivalent, in addition to the external and internal hazard indices values for the original sample and the uranium and gold tailings are higher than the recommended maximum values.
英文关键词	Isotopes fractionation gamma spectrometry leaching solvent extraction radiometric indices
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000650585900001
WOS关键词	SOUTHWESTERN SINAI ; TAILINGS ; FRACTIONATION ; RADIOACTIVITY ; SYSTEMS ; RA-226 ; ORE
WOS类目	Chemistry, Analytical ; Environmental Sciences
WOS研究方向	Chemistry ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352259
作者单位	[El-Fekya, Mohamed Galal; Mohammed, Hesham Samir; Ahmed, Mohammed Ramadan; Mira, Hamed Ibrahim] Nucl Mat Author, Prod Sect, Cairo, Egypt; [El-Shabasy, Ahmed Mohammed] Nucl & Radiol Regulatory Author, Radiat Protect Dept, Cairo, Egypt; [Abdel-Monem, Yasser Kamal] Menoufia Univ, Fac Sci, Shibin Al Kawm, Egypt
推荐引用方式 GB/T 7714	El-Fekya, Mohamed Galal,Mohammed, Hesham Samir,El-Shabasy, Ahmed Mohammed,et al. Mobilisation of radionuclides during uranium and gold processing of granitic rock at El-Missikate area, central Eastern Desert, Egypt[J],2021.
APA	El-Fekya, Mohamed Galal,Mohammed, Hesham Samir,El-Shabasy, Ahmed Mohammed,Ahmed, Mohammed Ramadan,Abdel-Monem, Yasser Kamal,&Mira, Hamed Ibrahim.(2021).Mobilisation of radionuclides during uranium and gold processing of granitic rock at El-Missikate area, central Eastern Desert, Egypt.INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY.
MLA	El-Fekya, Mohamed Galal,et al."Mobilisation of radionuclides during uranium and gold processing of granitic rock at El-Missikate area, central Eastern Desert, Egypt".INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY (2021).