Characteristics and implications of rare earth elements in high arsenic groundwater from the Datong basin

被引：8

作者：

Xie, Xian-Jun ^{[1
,2
]}

Wang, Yan-Xin ^{[1
,2
]}

Li, Jun-Xia ^{[1
,2
]}

Su, Chun-Li ^{[1
,2
]}

Wu, Ya ^{[1
,2
]}

Yu, Qian ^{[1
,2
]}

Li, Meng-Di ^{[1
,2
]}

机构：

[1] School of Environmental Studies, China University of Geosciences, Wuhan 430074, China

[2] State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China

来源：

Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2012年 / 37卷 / 02期

关键词：

Cerium - Iron oxides - Binary alloys - Groundwater pollution - Rare earths - Redox reactions - Groundwater resources - Hydrogeology - Europium - Aquifers - Manganese alloys - Iron alloys;

D O I：

10.3799/dqkx.2012.046

中图分类号：

学科分类号：

摘要：

In order to better understand the occurrence of high arsenic groundwater, rare earth elements (REEs) analyses were conducted for groundwater from the Datong basin. The results indicate that high arsenic groundwater usually has low ∑REE concentration and enriches in HREEs relative to LREEs. The low concentration of ∑REE in groundwater samples could be due to the scavenging of REEs onto the surface of solid phase Fe-Mn oxides/hydroxides within aquifer sediment. The enrichment of HREEs can be attributed to the combined result of complexation, and desorption and readsorption. The average up crust normalized REEs patterns clearly exhibit significant positive Ce and Eu anomalies in high arsenic groundwater. The observed good correlation between Ce/Ce* values and Eu and Fe+Mn could be related to the reductive dissolution of Fe and Mn oxides/hydroxides. The relationship between As and Ce/Ce* value and Eu suggests that Ce/Ce* value and Eu concentration are useful indicators of arsenic mobilization in groundwater system.

引用

页码：381 / 390