干旱区生态环境知识资源中心(Arid): High Hexavalent Chromium Concentration in Groundwater from a Deep Aquifer in the Baiyangdian Basin of the North China Plain

Arid

DOI	10.1021/acs.est.0c02357
	High Hexavalent Chromium Concentration in Groundwater from a Deep Aquifer in the Baiyangdian Basin of the North China Plain
	Guo, Huaming; Chen, Yi; Hu, Huiying; Zhao, Kai; Li, Haitao; Yan, Song; Xiu, Wei; Coyte, Rachel M.; Vengosh, Avner
通讯作者	Guo, HM
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
EISSN	1520-5851
出版年	2020
卷号	54 期号:16 页码:10068-10077
英文摘要	Hexavalent chromium (Cr(VI)) is known to occur naturally in shallow oxic groundwater, typically from aquifers associated with mafic and ultramafic formations, but information on the occurrence of Cr(VI) in deep groundwater from large sedimentary basins is limited. This study shows that groundwater from the Baiyangdian Lake Basin (BYB), home to the future second capital city of China, had high Cr concentration (>10 mu g/L, up to 86 mu g/L) in the deep aquifer (>150 m), while shallow groundwater had lower Cr concentration (<10 mu g/L). Chromium occurred predominantly as Cr(VI) (>95%). Shallow groundwater was characterized by higher Mn and Fe concentrations relative to deep groundwater, likely indicating more reducing conditions. Sequential extraction experiments from aquifer sediments suggest that Cr(VI) may derive from silicate weathering and that Mn oxides in the aquifer play a major role in the formation of Cr(VI) in groundwater. Inverse correlations between Mn and Cr(VI) suggest that reductive dissolution of Mn oxides constrains Cr(VI) mobilization in the shallow groundwater, while oxic-suboxic conditions in the deep aquifer limit Mn solubility, which enhances oxidation of Cr(III) to Cr(VI) and promotes desorption of Cr(VI) under alkaline conditions. This study demonstrates the potential geogenic occurrence of high Cr(VI) concentration in deep groundwater from a nonmafic, large sedimentary basin containing Mn oxides in the aquifer sediments.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000563025000033
WOS关键词	WESTERN MOJAVE DESERT ; SACRAMENTO VALLEY ; SURFACE-WATER ; MAJOR IONS ; PORE-WATER ; CALIFORNIA ; ISOTOPES ; CR(VI) ; SOILS ; GEOCHEMISTRY
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS研究方向	Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325843
作者单位	[Guo, Huaming; Chen, Yi; Hu, Huiying; Yan, Song; Xiu, Wei] China Univ Geosci Beijing, MOE Key Lab Groundwater Circulat & Environm Evolu, Beijing 100083, Peoples R China; [Guo, Huaming; Chen, Yi; Hu, Huiying; Yan, Song; Xiu, Wei] China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China; [Zhao, Kai; Li, Haitao] China Inst Geoenvironm Monitoring, Beijing 100081, Peoples R China; [Guo, Huaming; Xiu, Wei] China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China; [Coyte, Rachel M.; Vengosh, Avner] Duke Univ, Nicholas Sch Environm, Div Earth & Ocean Sci, Durham, NC 27708 USA
推荐引用方式 GB/T 7714	Guo, Huaming,Chen, Yi,Hu, Huiying,et al. High Hexavalent Chromium Concentration in Groundwater from a Deep Aquifer in the Baiyangdian Basin of the North China Plain[J],2020,54(16):10068-10077.
APA	Guo, Huaming.,Chen, Yi.,Hu, Huiying.,Zhao, Kai.,Li, Haitao.,...&Vengosh, Avner.(2020).High Hexavalent Chromium Concentration in Groundwater from a Deep Aquifer in the Baiyangdian Basin of the North China Plain.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(16),10068-10077.
MLA	Guo, Huaming,et al."High Hexavalent Chromium Concentration in Groundwater from a Deep Aquifer in the Baiyangdian Basin of the North China Plain".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.16(2020):10068-10077.