Groundwater Selenium Level and its Enrichment Dynamics in Seawater Intrusion Area along the Northern Coastal Zones of Shandong Province, China


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The variation of groundwater properties caused by seawater intrusion, such as OH, TDS, \({\text{SO}}_{4}^{{2 - }},\) 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 µg/L, with an average of 6.23 µg/L. All are within the limit of 10 µg/L except Wanglu village, but the local groundwater Se levels in 8 villages exceed the chronic criterion of 5 µg/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+, \({\text{SO}}_{4}^{{2 - }},\) 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 \({\text{SeO}}_{3}^{{2 - }}\) and \({\text{SeO}}_{4}^{{2 - }}\), 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 \({\text{SeO}}_{3}^{{2 - }}\) and \({\text{SeO}}_{4}^{{2 - }}\) and lesser content in groundwater of seawater intrusion areas.

作者简介

Qiao Chen

Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science
and Engineering, Shandong University of Science and Technology

编辑信件的主要联系方式.
Email: qchen5581@163.com
中国, Qingdao, 266590

Jiu-Chuan Wei

Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science
and Engineering, Shandong University of Science and Technology

编辑信件的主要联系方式.
Email: jcwee@126.com
中国, Qingdao, 266590

Cui-Ping Jia

College of Science, China University of Petroleum (East China)

编辑信件的主要联系方式.
Email: jiacuiping@upc.edu.cn
中国, Qingdao, 266580

Hong-Mei Wang

The Third Exploration Team of Shandong Coalfield Geologic Bureau

Email: jiacuiping@upc.edu.cn
中国, Tai’an, 271000

Long-Qing Shi

Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science
and Engineering, Shandong University of Science and Technology

Email: jiacuiping@upc.edu.cn
中国, Qingdao, 266590

Song-Liang Liu

The Third Exploration Team of Shandong Coalfield Geologic Bureau

Email: jiacuiping@upc.edu.cn
中国, Tai’an, 271000

Fang-Zhu Ning

The Third Exploration Team of Shandong Coalfield Geologic Bureau

Email: jiacuiping@upc.edu.cn
中国, Tai’an, 271000

Yu-Han Ji

Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science
and Engineering, Shandong University of Science and Technology

Email: jiacuiping@upc.edu.cn
中国, Qingdao, 266590

Fang-Ying Dong

Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science
and Engineering, Shandong University of Science and Technology

Email: jiacuiping@upc.edu.cn
中国, Qingdao, 266590

Zhi-Wen Jia

Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science
and Engineering, Shandong University of Science and Technology

Email: jiacuiping@upc.edu.cn
中国, Qingdao, 266590

De-Cheng Hao

Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science
and Engineering, Shandong University of Science and Technology

Email: jiacuiping@upc.edu.cn
中国, Qingdao, 266590

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