Distribution Characteristics and Influencing Factors of Uranium Isotopes in Saline Lake Waters in the Northeast of Qaidam Basin

doi:10.3390/min10010074

	Distribution Characteristics and Influencing Factors of Uranium Isotopes in Saline Lake Waters in the Northeast of Qaidam Basin
	Zhao, Chen 1; Zhang, Pu 1,2; Li, Xiangzhong 3,4; Ning, Youfeng 2; Tan, Liangcheng 4; Edwards, R. Lawrence 5,6; Yao, Xiunan 1; Cheng, Hai 2,5
刊名	MINERALS
	2020
卷号	10 期号:1 页码:21
关键词	uranium isotope lake water distribution characteristic influencing factor environmental impact the northeast of Qaidam Basin
DOI	10.3390/min10010074
通讯作者	Zhang, Pu(zhangpu357@xjtu.edu.cn) ; Li, Xiangzhong(xzhli04@163.com)
英文摘要	Four saline lakes in the northeast of Qaidam Basin were selected to explore the distribution characteristics and influencing factors of uranium isotopes in lake waters with high evaporation background. The U-238 concentration and the activity ratios of U-234/U-238 ([U-234/U-238](AR)) showed that there was no significant change in the same lake, but there was a certain degree of difference in the distribution between different lakes. We found that aqueous U-238 concentration within a certain range increased with an increase in TDS (total dissolved solid) and salinity, as was also the case with pH. As in natural waters, the pH affects the speciation of U-238, but TDS and salinity affect the adsorption process of aqueous U-238. Further, the replenishment of water will also affect the uranium isotope concentration for lakes, but it is not the main influencing factor for saline lakes. Therefore, we suggest that pH is the dominant factor affecting changes in aqueous U-238 concentration of the sampled saline lakes. The [U-234/U-238](AR) in these saline lakes are closely related to the input water and the associated water-rock interactions involving sediments, atmosphere dust, and organic material, etc. during the evolution stage, metamorphous degree, and hydrochemistry of the saline lakes. Lake water samples collected in the maximum and minimum discharge water period, were used to evaluate the seasonal distribution characteristics of aqueous U-238, and we found that U-238 concentration did not show an evident change with the seasons in these saline lakes. If the U-238 concentration and [U-234/U-238](AR) can remain consistent during a period of time, then the sediment ages and/or sedimentation rates could be determined by lake sediment and/or biogenic carbonate in future, thus allowing for the accurate reconstruction of the paleoclimate and paleoenvironment.
资助项目	National Natural Science Foundation of China[41873013] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of USA[1702816] ; 111 program of China[D19002]
WOS关键词	DISEQUILIBRIUM ; SEAWATER ; U-234 ; GEOCHEMISTRY ; REDUCTION ; SEDIMENTS ; ATLANTIC ; BEHAVIOR ; THORIUM ; IMPACT
WOS研究方向	Mineralogy ; Mining & Mineral Processing
语种	英语
出版者	MDPI
WOS记录号	WOS:000522452300074
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of USA ; 111 program of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/12544]
专题	地球环境研究所_现代环境研究室
通讯作者	Zhang, Pu; Li, Xiangzhong
作者单位	1.Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Peoples R China 2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710061, Peoples R China 3.Yunnan Univ, Res Ctr Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 5.Univ Minnesota, Dept Earth & Environm Sci, Minneapolis, MN 55455 USA 6.Nanjing Normal Univ, Sch Geog, Nanjing 210023, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Chen,Zhang, Pu,Li, Xiangzhong,et al. Distribution Characteristics and Influencing Factors of Uranium Isotopes in Saline Lake Waters in the Northeast of Qaidam Basin[J]. MINERALS,2020,10(1):21.
APA	Zhao, Chen.,Zhang, Pu.,Li, Xiangzhong.,Ning, Youfeng.,Tan, Liangcheng.,...&Cheng, Hai.(2020).Distribution Characteristics and Influencing Factors of Uranium Isotopes in Saline Lake Waters in the Northeast of Qaidam Basin.MINERALS,10(1),21.
MLA	Zhao, Chen,et al."Distribution Characteristics and Influencing Factors of Uranium Isotopes in Saline Lake Waters in the Northeast of Qaidam Basin".MINERALS 10.1(2020):21.