期刊
GEOCHEMISTRY INTERNATIONAL
卷 57, 期 11, 页码 1236-1242出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0016702919110065
关键词
groundwater selenium; seawater intrusion; adsorption and desorption; Shandong province
资金
- Natural Science Fund of China [40901027, 41572244]
- Natural Science Fund of Shandong Province [ZR2018MD012, ZR2015DM013]
- 2017 Special Fund for Scientific Research of Shandong Coalfield Geologic Bureau [2017(10)]
- Ministry of Education Research Fund for the Doctoral Program [20133718110004]
- Taishan Scholars Construction Projects
The variation of groundwater properties caused by seawater intrusion, such as OH-, TDS, SO42-, can potentially affect the groundwater Se levels. But there are no researches detailing the mechanism of groundwater selenium characteristics in seawater intrusion areas along coastal zones. Buzhuang town has been selected for study and groundwater is sampled to discuss the behavior of groundwater selenium with the intrusion of seawater. The groundwater Se levels range from 1.43 to 15.60 mu g/L, with an average of 6.23 mu g/L. All are within the limit of 10 mu g/L except Wanglu village, but the local groundwater Se levels in 8 villages exceed the chronic criterion of 5 mu g/L, and the Se levels in local groundwater are higher than those in the supplied water which has a non-seawater source. The groundwater Se levels have been shown to be elevated by seawater intrusion. The groundwater Se levels are positively correlated with Cl-, TDS, Br-, Na+, Mg2+, SO42-, Ca2+ and Fe and negatively correlated with pH. Ion competition effects and the Na-Mg-sulfate minerals play an important role in the adsorption and desorption for SeO32- and SeO42-, which are the important dynamic species for groundwater selenium enrichment. However, Ca and Fe ions have less contribution to groundwater Se variation because of the lower affinity for SeO32- and SeO42- and lesser content in groundwater of seawater intrusion areas.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据