Hydrogeochemical and geothermal controls on the formation of high fluoride groundwater

Wang, Zhen; Guo, Huaming; Xing, Shiping; Liu, Haiyan

doi:10.1016/j.jhydrol.2021.126372

Cited by 49 publications

(9 citation statements)

References 53 publications

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“…Hydrochemical parameters are also one of the important factors affecting the content and distribution of fluorine [43,44]. It has been found that fluorine accumulates more easily in an alkaline environment [18], therefore, the areas with the highest pH values (pH > 8.5) in the study area ( shown in Supplementary materials, Figure S1) also had the highest F − contents.…”

Section: Hydrochemical and Hydrological Influence Factorsmentioning

confidence: 92%

Distribution, Formation and Human Health Risk of Fluorine in Groundwater in Songnen Plain, NE China

Wang

Zheng

Liu

et al. 2021

Water

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Songnen Plain is one of the three great plains in northeast China with abundant groundwater resources. The continuous population growth and the rapid development of agriculture and economy in China has caused a series of environmental problems in the plain, such as endemic diseases caused by the accumulation of harmful substances in drinking water. This paper conducts a systematic investigation of fluorine in the groundwater of Songnen Plain. The results showed that fluorine was widespread in the groundwater of the plain in the concentration range of BDL–8.54 mg·L−1, at a mean value of 0.63 mg·L−1 and detectable at a rate of 85.91%. The highest concentrations of fluorine were found in central and southwest areas of the plain. The concentration exceeded the guideline values for fluorine in drinking water and may have varying degrees of adverse effects on adults, and especially children, in the study area. The fluorine in groundwater mainly came from the dissolution of fluorite and other fluorine-containing minerals, and the concentrations and distribution of fluorine were affected by cation exchange, groundwater flow field and hydrochemical indexes (pH, TDS and HCO3−). The study provides scientific basis for the investigation, evaluation and prevention of endemic diseases caused by fluorine.

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Section: Hydrochemical and Hydrological Influence Factorsmentioning

confidence: 92%

Distribution, Formation and Human Health Risk of Fluorine in Groundwater in Songnen Plain, NE China

Wang

Zheng

Liu

et al. 2021

Water

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“…Evapotranspiration is another leading geochemical process that increases TDS concentration, and has a greater influence on the hydrochemical compositions of shallow groundwater (Figure 5a). The relationship between γ(Ca 2+ /Na + ) and γ(HCO 3− /Na + ) can be used to determine the source of major ions in groundwater [5]. The relationship between the ratios of γ(Ca 2+ /Na + ) and γ(HCO 3 − /Na + ) shows that the groundwater samples are mainly distributed near the end members of silicate salt rocks and close to the end members of evaporites (Figure 5b), indicating that the hydrochemical compositions of groundwater mainly originated from the weathering hydrolysis of silicate minerals and dissolution of evaporites, and relatively less affected by the weathering of carbonate rocks in Datong Basin.…”

Section: Hydrochemical Evolution Processesmentioning

confidence: 99%

“…Rapid population growth and intensified agricultural and industrial demands are driving to the over-exploitation of groundwater. The groundwater has deteriorated in many areas due to contaminants of natural and anthropogenic interventions [4,5]. Salinity in groundwater is one of the prominent phenomena of water quality deterioration, which prevailing often in arid and semi-arid regions.…”

Section: Introductionmentioning

confidence: 99%

Origin and Enrichment Mechanisms of Salinity and Fluoride in Sedimentary Aquifers of Datong Basin, Northern China

Wang

Weerasinghe

et al. 2023

IJERPH

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The exposure of inhabitants to high fluoride and saline groundwater is the main health issue in Datong Basin, Northern China. This study aims to elucidate the spatial distribution and the mechanisms of high fluoride and salinity occurrence in the shallow sedimentary aquifers of the Datong Basin. Groundwater salinity and fluoride content, and their association with measured hydrochemical parameters, were conducted using multivariate statistical analyses. The analytical results revealed that the concentrations of fluoride and total dissolved solids (TDS) show dramatic variations within the study area. Around 41.4% of groundwater samples contained high-level fluoride concentration (F− > 1.5 mg/L), whereas 32.8% contained elevated-level TDS (TDS > 1000 mg/L). Both fluoride and TDS concentrations had elevated trends towards the central part of the basin. Shallow groundwater was seriously affected by evaporation and evapotranspiration, which can be the critical factors responsible for rather high TDS and F− concentrations in shallow aquifers. Water–rock reactions including silicate hydrolysis, dissolution–precipitation of carbonates and evaporates, adsorption, and ion exchange processes, as well as evapotranspiration, are the main governing factors for salinity and fluoride enrichment in groundwater. Solubility control of F-bearing and carbonate minerals is the dominant mechanism affecting F− levels. Prevailing conditions of alkaline pH, moderate TDS and Na+, high HCO3−, and lower Ca2+ content facilitate the enrichment of fluoride in the study area. Excessive evapotranspiration can be also the most influencing factor responsible for high fluoride and TDS content, due to the extended residence time of groundwater and the arid climate of the central part of the Datong Basin.

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“…Sodium and bicarbonate in the water environment have an important impact on the enrichment of uoride. In recent years, the researches mainly focuse on the origin and geochemistry of high uoride groundwater (Wei et al 2016; Kashyap et al 2020), geochemical processes controlling uoride concentration in groundwater (Ra que et al 2015; Wang et al 2021) and health risk assessment of high uoride groundwater (Ahada and Suthar 2017; Xiao et al 2022). In China, high uoride groundwater is widely distributed in the north, northeast and northwest part, mainly in shallow groundwater (He et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Characteristics and mechanism of spatial-temporal changes of fluorosis in typical high fluoride areas of Northwest China over the past 40 years

Liu

et al. 2022

Preprint

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Since the 1980s, China, especially the northwest part had carried out extensive water-improving project to reduce fluoride, but the fluorosis has not been completely eliminated. Through historical data comparison, on-site investigation and sample detection, combined with hydrochemical analysis and spatial analysis, this paper studied the 40 years’ changes of water fluoride and the control effect of fluorosis in the typical fluorosis areas Dali County of northwest China. Results show that from 1980 to 2017, benefited from the water-improving project, the fluoride in local residents' drinking water significantly decreased, with the median value declined from 2.40 to 1.26 mg/L, which further reduced fluorosis. As a typical water-improving area by low-fluoride water sources developing, in Dali, the generally dropped fluoride of groundwater is the root cause for the controlled endemic fluorosis. The enrichment of fluoride in groundwater here is controlled by the fluoride-rich geological background, landform and evaporative climate. The water environment characterized by slight alkalinity, rich sodium and low calcium is also an important factor. For the temporal changes of groundwater, human irrigation activities were considered as the primary role. Although the fluorosis has improved significantly, low residents' satisfaction and the rise of fluoride concentration in some water sources have led to a continuous high fluoride water drinking and fluorosis in some areas. It is suggested that the local government should strengthen water quality improvement from the aspects of low fluoride water source development and water supply management to consolidate the effect of fluorosis prevention and control.

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Hydrogeochemical and geothermal controls on the formation of high fluoride groundwater

Cited by 49 publications

References 53 publications

Distribution, Formation and Human Health Risk of Fluorine in Groundwater in Songnen Plain, NE China

Distribution, Formation and Human Health Risk of Fluorine in Groundwater in Songnen Plain, NE China

Origin and Enrichment Mechanisms of Salinity and Fluoride in Sedimentary Aquifers of Datong Basin, Northern China

Characteristics and mechanism of spatial-temporal changes of fluorosis in typical high fluoride areas of Northwest China over the past 40 years

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