Geochemical processes in Kandi Basin, Benin, West Africa: A combined hydrochemistry and stable isotopes approach

Kpegli, Kodjo Apelete Raoul; Alassane, Abdoukarim; Trabelsi, Rim; Zouari, Kamel; Boukari, M.; Mama, Daouda; Dovonon, Firmin Leonce; Yoxi, Yede Victor; Toro-Espitia, Luis Eduardo

doi:10.1016/j.quaint.2014.12.070

Cited by 25 publications

(3 citation statements)

References 13 publications

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“…By analyzing the proportional relationship between Mg 2+ , Ca 2+ , and Na + plasma in Huanglong water, its formation can be reflected . The ratio of ρ(Mg 2+ )/ρ(Na + ) of the surface water of Huanglong is greater than 1, and the ratio of ρ(Mg 2+ )/ρ(Ca 2+ ) is 0.1–1.…”

Section: Resultsmentioning

confidence: 99%

Water Environmental Characteristics and Eutrophication Evaluation of Alpine Karst Mountains in Huanglong, Sichuan, China

Gao

Zhang

Sun³

et al. 2023

ACS Earth Space Chem.

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Travertine deposits are formed after CO2 is degassed from deep karst water at the Huanglong Scenic Area, a World Natural Heritage Site. In recent years, various levels of eutrophication have occurred in travertine waters, resulting in large areas of algal mats that have severely affected the continued deposition of travertine and its appreciable value. The research on hydrochemical types, hydrochemical components, and pollution characteristics of surface water and groundwater in Huanglong National Scenic Area, a World Natural Heritage, is beneficial to the evaluation and management of regional water resources and landscape development. In June 2022, 14 groups of surface water and groundwater samples were collected from Huanglong. Mathematical statistics were used to analyze the water’s chemical characteristics, the Piper three-plot was used to analyze the water’s chemical types, and Gibbs and Gaillardet model were used to discuss the sources and influencing factors of main ions in surface water. The eutrophication degree of regional water was evaluated by the single factor index method. The results show that most of the groundwater in the study area belongs to weakly alkaline water. The cations are mainly Ca2+, the anions are mainly HCO3 –, and the hydrochemical type is HCO3–Ca. The major contribution of TDS comes from Ca2+ and HCO3 –. According to the analysis of water–rock model, the hydrochemical origin of surface water in the study area is mainly controlled by rock weathering, and most ions are influenced by the water–rock interaction of carbonate rocks, with the existence of reverse cation exchange. The spatial and temporal distribution characteristics of nitrogen, phosphorus, and carbon are obvious. Eutrophication evaluation showed that Huanglong was in a medium eutrophication state.

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Section: Resultsmentioning

confidence: 99%

Water Environmental Characteristics and Eutrophication Evaluation of Alpine Karst Mountains in Huanglong, Sichuan, China

Gao

Zhang

Sun³

et al. 2023

ACS Earth Space Chem.

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“… 14 However, the origins of ions and processes that control their concentrations can be determined by plotting bivariate diagrams. 18 Therefore, we created several plots of the relationships among major elements to identify the origin and processes contributing to groundwater mineralization.…”

Section: Resultsmentioning

confidence: 99%

Identification of the dominant hydrogeochemical processes and characterization of potential contaminants in groundwater in Qingyuan, China, by multivariate statistical analysis

et al. 2018

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“…Arid and semiarid regions represent >30% of the global terrestrial surface area and receive <400 mm yr −1 of rainfall. In these regions, aquifers represent the principal water supply; in many cases, groundwater may be a fossil resource [1][2][3][4]. The study of water resources in arid and semiarid regions has become important due to their increasing demand, and groundwater depletion [5].…”

Section: Introductionmentioning

confidence: 99%

Integration of Isotopic (2H and 18O) and Geophysical Applications to Define a Groundwater Conceptual Model in Semiarid Regions

Pacheco-Guerrero

Gonzalez-Trinidad

Júnez-Ferreira

et al. 2019

Water

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One-third of the global population depends on groundwater for drinking, which is an even larger proportion for arid regions. The integration of isotopic and geophysical applications has been very useful in understanding the process of groundwater recharge. The aim of this study is to define a conceptual model that describes groundwater functions within an aquifer located in a semi-arid region by identifying recharge patterns based on the isotopic characteristics of: Rainfall, surface water, shallow and deep groundwater, and incorporating regional geophysical data. We demonstrated that rainfall was affected by sub-cloud evaporation and altitude. Shallow and deep modern groundwater samples were clustered and exhibited similar evolution from rainfall. However, different groups recharged from different precipitation sources compared to the local one. In the current study, we analyzed the isotopic evolution of deep groundwater over a 10-year period, which was mainly affected by the incorporation of different flows with different isotopic signatures and the hydrodynamics of the area. We performed two geoelectrical sections in the study area to improve the understanding of the hydrogeological setting and water movement patterns. The new conceptual model should help stakeholders in the context of water management policies for the study area.

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Geochemical processes in Kandi Basin, Benin, West Africa: A combined hydrochemistry and stable isotopes approach

Cited by 25 publications

References 13 publications

Water Environmental Characteristics and Eutrophication Evaluation of Alpine Karst Mountains in Huanglong, Sichuan, China

Water Environmental Characteristics and Eutrophication Evaluation of Alpine Karst Mountains in Huanglong, Sichuan, China

Identification of the dominant hydrogeochemical processes and characterization of potential contaminants in groundwater in Qingyuan, China, by multivariate statistical analysis

Integration of Isotopic (2H and 18O) and Geophysical Applications to Define a Groundwater Conceptual Model in Semiarid Regions

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