Study on the chemical characteristics and hydrogeochemistry process of groundwater in the upper reaches of Xin'an River Basin

CAI Lei; SU Jingwen; LI Zhuang; SHI Hongfeng; WANG Rui; YANG Yang; DING Yong

doi:10.16788/j.hddz.32-1865/P.2023.03.002

2023 Vol. 44, No. 3

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Article navigation > East China Geology > 2023 > 44(3): 262-272

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CAI Lei, SU Jingwen, LI Zhuang, SHI Hongfeng, WANG Rui, YANG Yang, DING Yong. 2023. Study on the chemical characteristics and hydrogeochemistry process of groundwater in the upper reaches of Xin'an River Basin. East China Geology, 44(3): 262-272. doi: 10.16788/j.hddz.32-1865/P.2023.03.002

Citation:

CAI Lei, SU Jingwen, LI Zhuang, SHI Hongfeng, WANG Rui, YANG Yang, DING Yong. 2023. Study on the chemical characteristics and hydrogeochemistry process of groundwater in the upper reaches of Xin'an River Basin. East China Geology, 44(3): 262-272. doi: 10.16788/j.hddz.32-1865/P.2023.03.002

Study on the chemical characteristics and hydrogeochemistry process of groundwater in the upper reaches of Xin'an River Basin

1. Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China;
2. Tianjin Center, China Geological Survey, Tianjin 300170, China;
3. No. 332 Geological Party, Bureau of Geology and Mineral Resources Exploration of Anhui Province, Huangshan 245000, Anhui, China

More Information

Corresponding author: SU Jingwen, sjingwen@cgs.cn

Received Date: 23 August 2022

Revised Date: 14 November 2022

Abstract

Abstract

The chemical composition of groundwater in the upper reaches of Xin'an River Basin is complex. Water-rock interactions such as dissolution, precipitation and adsorption between water and water-bearing medium play an important role in controlling the formation and evolution of complex groundwater components. In this paper, mathematical statistics, principal component and cluster analysis, Gibbs model, silicic acid balance, proportion coefficient of major ions and other methods are used to study the hydrochemistry characteristics and hydrogeochemical process of the groundwater in the upper reaches of Xin'an River Basin, also analyzed the sources of hydrochemical components. The results show that the cations in groundwater in the study area are mainly Ca²⁺and Na⁺, the anions are mainly HCO^-₃, with a small amount of Cl^-and SO^2-₄. The main hydrochemical types of groundwater are HCO₃-Ca, HCO₃-Na·Ca and HCO₃-Ca·Mg. The hydrochemical components of groundwater are mainly derived from the weathering and dissolution of carbonate and silicate minerals, followed by the weathering dissolution of evaporite. The water chemical characteristics of groundwater are affected by the leaching of groundwater, the cation alternating adsorption and human activities.
- groundwater /
- water-rock interaction /
- rock weathering /
- cation alternating adsorption /
- Xin'an River Basin

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References

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