Geochemical and geostatistical appraisal of fluoride contamination: An insight into the Quaternary aquifer

Thapa, Raju; Gupta, Srimanta; Gupta, Arindam; Reddy, Dontireddy Venkat; Kaur, Harjeet

doi:10.1016/j.scitotenv.2018.05.360

Cited by 36 publications

(7 citation statements)

References 39 publications

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“…All samples were undersaturated with respect to fluorite, indicating that the Fanions in the groundwater samples were mainly sourced from the dissolution of fluorite (CaF 2 ) [18]. Fig.…”

Section: Dissolution and Precipitation Processmentioning

confidence: 93%

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Geochemical Behaviours and Formation Mechanisms for Elevated Fluoride in the Drinking Groundwater in Sulin Coal-Mining District, Northern Anhui Province, China

Hao¹,

Zhang²,

Gui³

2021

Pol. J. Environ. Stud.

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There has been substantial research on the sources and geochemical processes associated with fluoride (F -) in agricultural groundwater. However, the spatial distribution, geochemical behaviours, and enrichment mechanisms of fluoride in the groundwater from a coal-mining district used for drinking water supply have not been fully understood. In this study, 42 drinking water samples of the groundwater were collected in May 2019 and March 2020 from the Sulin coal-mining district, Anhui, China. Samples were analysed to investigate the distribution, geochemical behaviour, and formation mechanisms of fluoride. The Fconcentrations in the groundwater samples ranged from 0.55 to 2.06 mg/L, with a mean value of 1.16 mg/L. The Fconcentrations in 54.76% of the water samples exceeded China's national standards (1.00 mg/L). The results show that the Fin the water was enriched in an environment with high pH and HCO 3 content. The weathering of Fbearing minerals was the main source of Fin the drinking water supply. Evaporation, cation exchange, competitive effect, and anthropogenic activities were considered to have promoted elevated Fconcentrations in the groundwater resource. This research will aid policy development for properly managing drinking water to eliminate health problems in coal-mining districts due to excessive fluoride intake.

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“…All samples were undersaturated with respect to fluorite, indicating that the Fanions in the groundwater samples were mainly sourced from the dissolution of fluorite (CaF 2 ) [18]. Fig.…”

Section: Dissolution and Precipitation Processmentioning

confidence: 93%

“…are common F-bearing minerals [13][14][15][16][17]. Higher levels of fluoride are generally associated with high pH [17][18][19][20] and Na-HCO 3 type waters [1,6,21], although the evaporation and ion exchange factors [4,10,22,23] may also play an important role in promoting elevated Fconcentrations in groundwater.…”

Section: Introductionmentioning

confidence: 99%

Geochemical Behaviours and Formation Mechanisms for Elevated Fluoride in the Drinking Groundwater in Sulin Coal-Mining District, Northern Anhui Province, China

Hao¹,

Zhang²,

Gui³

2021

Pol. J. Environ. Stud.

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“…A Gibbs diagram can intuitively express three water-chemistry control modes in a watershed. The process of water-chemical composition is atmospheric precipitation control, rock weathering control, and evaporation and crystallization control [47,[52][53][54]. As shown in Figure 8, the Cl − /(Cl − + HCO 3 − ) values of most of the river water samples were between 0.05 and 0.28, and the value of Na + /(Na + + Ca 2+ ) was between 0.12 and 0.37 in the Altay Mts.…”

Section: Applicability For Irrigation and Human Health Risk Evaluationmentioning

confidence: 99%

Water Quality for Agricultural Irrigation and Aquatic Arsenic Health Risk in the Altay and Tianshan Mountains, Central Asia

Liu

Abuduwaili

2021

Agronomy

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Due to a lack of water-quality studies compared with water-quantity studies, an investigation into the factors influencing the hydrochemical composition of the rivers in the Tianshan and Altay Mountains was conducted with a model of multiple linear regression, while the suitability of the water quality for irrigation and the health risks of arsenic (As) were assessed with classical evaluation methods. The results suggest that 44.0% of the water samples from the Altay Mountains fell into the Ca-HCO3 category type, 48.0% of the water samples were of the Ca-HCO3-Cl type, and the remaining samples belonged to the Ca-Na-HCO3-Cl type. In the Tianshan Mountain area, 58.6% of the water samples fell into the Ca-HCO3 hydrochemical category, 20.7% of the water samples were of the Ca-HCO3-Cl type, and 20.7% of the water samples belonged to the Ca-Na-HCO3-Cl type. The major ions in the water were dominated by the control of the water and rock interaction. The interaction between water and rock in the Altay area controlled 69.2% of the overall variance in the As content in the river waters, and it dominated 76.2% of the variance in the Tianshan region. The river waters in the Altay and Tianshan Mountain regions are suitable for agricultural irrigation with excellent-to-good water quality. The results also suggest that there is no non-carcinogenic risk and that the carcinogenic risk is between the acceptable/tolerable risk range of 10−6–10−4, except only one sample in Tianshan Mountain region. The research methodology provided a reference for revealing the potential sources of toxic element pollution, and the results provided a scientific basis for regional agricultural irrigation, as well as a reference for decision making on the environmental protection of the watershed.

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“…Numerous studies have been carried out to analyze groundwater genetic mechanisms, groundwater quality evaluations and human health risk assessments (Li et al, 2017(Li et al, , 2018Luo et al, 2021). High-F groundwater is the most widespread cause of fluorosis worldwide, such as the United States, India, Pakistan, South Africa, South Korea and China (Chae et al, 2007;Kim et al, 2012;Lü et al, 2016;Thapa et al, 2018;Jia et al, 2019;Yadav et al, 2019;Mcmahon et al, 2020). Arsenic has been widely recognized as among the most toxic chemicals, and over 200 million people worldwide still drink arsenic-contaminated water (Naujokas et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

The groundwater environmental effects and health risk assessment in saline-fresh water mixing zone of coastal plain

Liu

Yang

Liu

et al. 2022

Preprint

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The groundwater environment is important to human living in coastal plain. In this study, southern Laizhou Bay (SLB) is chosen as the study area and 47 groundwater samples are collected to analyze groundwater environmental effects and health risk assessment in saline-fresh water mixing zone (SFMZ) of coastal plain. Influenced by saline water intrusion (SWI), K+, Na+, Ca2+, Mg2+, Cl-, SO42- and HCO3- concentration values are exceeded WHO standard value seriously. High-F groundwater is the product in process of SWI, caused by cation exchange, weakly alkaline environment, evaporation and fluorite dissolution. Na+ concentration and a decrease in the Ca2+ concentration can promote further dissolution of fluorite and other F-containing minerals. Based on the health risk assessment method, the average HQ sequence in typical groundwater pollutants is Cl- > F- > NO3-N > Se > Mn > NO2-N > Cu > Pb > Zn > Fe, and the CR sequence caused by carcinogenic heavy metals is Cd > As > Cr. The greatest non-carcinogenic risk to adults and children in the study area is caused by Cl-. Cd is the most important indicator of carcinogenic risk, and its contribution to CR accounts for 74.531%. The regions with high health impacts of carcinogenic pollutants in groundwater are mainly concentrated in the central part of the study area, with the exceeding range of 35.373% for adults and 44.768% for children. Non-carcinogenic pollutants are enriched in SFMZ, which have greater impacts on human body and lead to higher health risks compared with carcinogenic pollutants.

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Geochemical and geostatistical appraisal of fluoride contamination: An insight into the Quaternary aquifer

Cited by 36 publications

References 39 publications

Geochemical Behaviours and Formation Mechanisms for Elevated Fluoride in the Drinking Groundwater in Sulin Coal-Mining District, Northern Anhui Province, China

Geochemical Behaviours and Formation Mechanisms for Elevated Fluoride in the Drinking Groundwater in Sulin Coal-Mining District, Northern Anhui Province, China

Water Quality for Agricultural Irrigation and Aquatic Arsenic Health Risk in the Altay and Tianshan Mountains, Central Asia

The groundwater environmental effects and health risk assessment in saline-fresh water mixing zone of coastal plain

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