Fluoride ion contamination in the groundwater of Mithi sub-district, the Thar Desert, Pakistan

Rafique, Tahir; Naseem, Shahid; Bhanger, Muhammad Iqbal; Usmani, Tanzil Haider

doi:10.1007/s00254-007-1167-y

Cited by 124 publications

(88 citation statements)

References 14 publications

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“…Several studies have suggested that F-containing minerals like fluorite, micas (biotite), apatite, amphiboles, and clay minerals could be possible sources of F -in groundwater (Hem, 1985;Kundu et al, 2001;Saxena and Ahmed, 2003;Sujatha, 2003;Rafique et al, 2008;Desbarats, 2009;Naseem et al, 2010;Reddy et al, 2010). B is associated with clay minerals, but may also occur as an accessory constituent of tourmaline, biotite, and amphiboles (Hem, 1985;Gemici and Tarcan, 2002;Gonfiantini and Pennisi, 2006;Pennisi et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

“…Analogous behavior of pH values was observed in case of a granite dissolution study by Chae et al (2006), where the solution pH reached 9.5 at the beginning of the experiment and decreased slightly over the next 500 h, and then stabilized at ~8.0. Several hydrochemical studies suggest that the pH value of groundwater is positively correlated with B and F - (Queste et al, 2001;Gemici and Tarcan, 2002;Chae et al, 2007;Rafique et al, 2008;Desbarats, 2009;Karro and Uppin, 2013). This implies that an alkaline environment preferably favors the release of F -and B into the water.…”

Section: Whole-rock Semi-quantative Mineral Composition Of the Silurimentioning

confidence: 99%

“…The long open interval of the drilled well enables the mixing of waters with different chemical compositions, which results in groundwater dilution and lower F -and B concentrations. Further, high F -and B concentrations are often associated with alkaline waters rich in Na + and Cl -ions, as shown in several regional studies (Queste et al, 2001;Gemici and Tarcan, 2002;Saxena and Ahmed, 2003;Sujatha, 2003;Chae et al, 2007;Rafique et al, 2008;Desbarats, 2009) as well as in the case of the Estonian Silurian-Ordovician aquifer system (Karro and Uppin, 2013). Groundwater in Silurian and Ordovician carbonate rocks is predominantly of an HCO 3 -Ca-Mg chemical type with a high Ca 2+ concentration and low amounts of F -and B.…”

Section: Whole-rock Semi-quantative Mineral Composition Of the Silurimentioning

confidence: 99%

“…3). According to several studies (Saxena and Ahmed, 2003;Sujatha, 2003;Gonfiantini and Pennisi, 2006;Pennisi et al, 2006;Rafique et al, 2008;Naseem et al, 2010), significant amounts of B and F in rocks are considered to be related to clay minerals. Ion-exchange and adsorption are the most typical processes through which B and F are bound to clay minerals.…”

Section: Whole-rock Semi-quantative Mineral Composition Of the Silurimentioning

confidence: 99%

“…Fluorite (CaF 2 ) has been generally considered as a dominant source of groundwater F -, however, its solubility in fresh water is low (Hem, 1985;Kundu et al, 2001;Saxena and Ahmed, 2003;Sujatha, 2003;Rafique et al, 2008;Naseem et al, 2010;Reddy et al, 2010). It is also suggested that high F -concentrations in groundwater may result from dissolution of biotite and apatite, which can contain significant amounts of F at the OH -sites of their octahedral sheet (Hem, 1985;Rafique et al, 2008;Desbarats, 2009;Reddy et al, 2010). High F concentrations are also associated with volcanic activity.…”

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confidence: 99%

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Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water

Uppin

Karro

2013

Geochem. J.

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High natural fluoride (up to 6.1 mg/l) and boron (up to 2.1 mg/l) concentrations in groundwater are recorded in western Estonia, where a carbonaceous Silurian-Ordovician aquifer system is the main source of drinking water. The aim of this study is to examine the dissolution of boron and fluoride from different carbonate rocks using batch dissolution tests. The total boron and fluorine concentration within carbonate rocks varies between 100-1000 and 5-150 mg/kg, respectively. Generally, boron and fluoride concentrations increase as the amount of terrigenous material in the rock increases. Laboratory leaching experiments showed that the amount of leached boron and fluoride was proportional to the content of these elements in the rock samples. Further, boron and fluoride concentrations in leachates were positively correlated with the amount of terrigenous material in rocks. Both boron and fluoride concentrations in leachates continually rose over 49 days of leaching. Long-term water-rock interaction is responsible for the high boron and fluoride contents in groundwater of western Estonia.

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Section: Resultsmentioning

confidence: 99%

Section: Whole-rock Semi-quantative Mineral Composition Of the Silurimentioning

confidence: 99%

Section: Whole-rock Semi-quantative Mineral Composition Of the Silurimentioning

confidence: 99%

Section: Whole-rock Semi-quantative Mineral Composition Of the Silurimentioning

confidence: 99%

mentioning

confidence: 99%

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Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water

Uppin

Karro

2013

Geochem. J.

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Meta‐analysis and risk assessment of fluoride contamination in groundwater

Islam

Mostafa

2021

Water Environment Research

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This study aimed to carry out a systematic review of meta‐analysis and risk assessment of the global pooled concentration of fluoride and identify the influencing factors of fluoride loads in groundwater. The study extracted data from 36 most prevalent regions of 20 countries in the world through various search engines using keywords as well as Boolean operators and follows the PRISMA statement in every phase of literature searching. The study illustrated the pooled concentration of fluoride in the selected 20 countries was 2.1267 mg/L (1.650, 2.604) at 95% confidence interval, which was higher than the WHO standards limit of 1.5 mg/L. The results of the meta‐analysis suggested that pH, Na, HCO3 and rainfall was significantly positively correlated (r = ~0.4; p ˂ 0.05) to fluoride and has a weak correction with the other parameters such as local temperature, altitude, water depth, EC, Ca, and Mg (r = −0.064 to +0.214; p ˂ 0.05). Concerning, the risk assessment through oral and dermal route exposure revealed that the consumers in most of the regions were at considerable risk, and the children were more vulnerable than the adults (THQ > 1). The study findings would help to take measures for safe water supply in the affected areas. Practitioner points The calculated pooled concentration of fluoride was 2.1267 mg/L (1.650, 2.604) at 95% CI in groundwater of the study areas. Climatic conditions and lithological composition are the key controlling factors for groundwater fluoride contamination. Semi‐arid and arid regions are significantly affected by fluoride rather than humid areas. Regarding fluorosis in selected regions, children (78%) are more vulnerable than adults (23%).

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Fluoride Pollution in Groundwater

Sahu

2018

Groundwater Development and Management

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Fluoride ion contamination in the groundwater of Mithi sub-district, the Thar Desert, Pakistan

Cited by 124 publications

References 14 publications

Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water

Determination of boron and fluoride sources in groundwater: Batch dissolution of carbonate rocks in water

Meta‐analysis and risk assessment of fluoride contamination in groundwater

Fluoride Pollution in Groundwater

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