Geochemical provenance and spatial distribution of fluoride in groundwater of Mayo Tsanaga River Basin, Far North Region, Cameroon: implications for incidence of fluorosis and optimal consumption dose

Fantong, Wilson Y.; Satake, Hiroshi; Ayonghe, Samuel N.; Suh, Cheo Emmanuel; Adelana, Segun; Fantong, Emilia bi; Banseka, Hycinth S.; Gwanfogbe, Cletus D.; Woincham, Leonard N.; Uehara, Yoshitoshi; Zhang, Jing

doi:10.1007/s10653-009-9271-4

Cited by 83 publications

(38 citation statements)

References 37 publications

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“…Here, fluoride enrichment in groundwater is linked to water-rock interactions at higher pH (Fantong et al 2010). Moreover, fluoride concentrations around 15 mg/L are reported in very shallow groundwater of Mayo Tsanaga River basin in Cameroon.…”

Section: Cameroonmentioning

confidence: 86%

“…In addition, calcium bicarbonate-type facies usually have lower concentration of fluoride, while higher fluoride concentration in groundwater has been reported from sodium bicarbonate-type facies (Fantong et al 2010; Table 4). The positive correlation between fluoride and chloride in groundwater has also been observed (Jacks et al 1993; Kundu et al 2001) (Table 4).…”

Section: Associationmentioning

confidence: 88%

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Worldwide contamination of water by fluoride

et al. 2016

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Fluoride contamination in water is a major problem across the globe, with health hazards such as dental and skeletal fluorosis. Most earlier studies are confined to local or regional scales. As the problem has serious socioeconomic implications, there is a need for a global perspective. Thus, here we review worldwide research for nearly a century on fluoride contamination in water. We investigated the distribution of fluoride contamination in water, its sources, mobilization and association. The major findings are: (1) Anomalous fluoride concentration in groundwater is mainly confined to arid and semiarid regions of Asia and North Africa. (2) The geogenic sources of fluoride in water are mainly fluorine-bearing minerals in rocks and sediments, whereas anthropogenic sources of fluoride in water are mainly pesticides and industrial waste.(3) Fluoride mobilization from geogenic sources is mainly controlled by alkalinity and temperature. (4) Fluoride occurrence in water is associated with ions such as sodium, arsenic chloride and bicarbonate. There are few associations of fluoride in water with calcium and magnesium.

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Section: Cameroonmentioning

confidence: 86%

Section: Associationmentioning

confidence: 88%

Worldwide contamination of water by fluoride

et al. 2016

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“…Higher level of fluoride in groundwater is a worldwide problem [1][2][3]. The World Health Organization (WHO) has set a guideline of 1.5 mg/L for fluoride in potable water [4].…”

Section: Introductionmentioning

confidence: 99%

Removal of Fluoride from Water by Adsorption onto Fired Clay Pots: Kinetics and Equilibrium Studies

Kofa

Gomdje

Telegang

et al. 2017

Journal of Applied Chemistry

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Excessive fluoride in potable water is a serious health problem in rural areas of many developing countries. Hence, there is a need to find a simple and cost-effective method for water defluoridation in such areas. In the northern part of Cameroon, clay pots are used for cooking food and water storage. The firing of these pots consists of intensive burning using fire wood. They were tested as a potential adsorbent for removing excess fluoride from water. Experiments were carried out in a jar test at room temperature (25 ± 2 ∘ C). Effects of contact time (0-90 min), pH (4, 5, 7, 8, and 9), stirring speed (60, 90, 120, and 200 rpm), and ionic strength (0-1000 mg/L) were investigated. Results showed that equilibrium was attained in 10 min whatever the pH. Pseudo-second-order and pore diffusion models described well the adsorption process. The highest amount of fluoride adsorbed (1.6 mg/g) was obtained at pH 4-5 and the optimum stirring speed is 120 rpm. Ionic strength has a significant effect on fluoride adsorption.

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“…Fluorine commonly occurs as a negatively charged ion in water, either in trace amounts or as a major ion with high concentrations (Gaciri and Ad Davis 1993;Apambire et al 1997;Fantong et al 2009). Fluorosis is a very dangerous and deadly disease affecting millions of people across the world.…”

Section: Introductionmentioning

confidence: 99%

Contamination of fluoride in groundwater and its effect on human health: a case study in hard rock aquifers of Siddipet, Telangana State, India

2016

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Hydrogeochemical investigation has been carried out in the granitic terrain of Siddipet area, Medak district, Telangana State, India with an aim to understand the distribution of fluoride in the groundwater and to understand the relationship of fluoride with other major ions, and also to identify the high fluoride-bearing groundwater zones. 104 groundwater samples were analyzed in the study area for fluoride and other major ions like calcium, magnesium, chloride, carbonate, bicarbonate, sodium, potassium, sulfate, and nitrate in addition to pH and electrical conductivity. The studies revealed that the concentration of fluoride in groundwater is ranging from 0.2 to 2.2 mg L -1 with a mean of 1.1 mg L -1 . Nearly 22 % of groundwater has more than the permissible limit of fluoride (1.5 mg L -1 ), which is responsible for the endemic dental fluorosis in the area concerned. Geochemical classification of groundwater shows that Na-HCO 3 , Ca-Cl, and Ca-HCO 3 -Na are the dominant hydrochemical facies. Gibbs diagram shows rock-water interaction dominance and evaporation dominance, which are responsible for the change in the quality of water in the hard rock aquifer of the study area. The groundwater in villages and its environs are affected by fluoride contamination, and consequently majority of the population living in these villages suffer from dental fluorosis. Hence, they are advised to consume drinking water which has less than 1.5 mg L -1 fluoride to avoid further fluorosis risks.

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Geochemical provenance and spatial distribution of fluoride in groundwater of Mayo Tsanaga River Basin, Far North Region, Cameroon: implications for incidence of fluorosis and optimal consumption dose

Cited by 83 publications

References 37 publications

Worldwide contamination of water by fluoride

Worldwide contamination of water by fluoride

Removal of Fluoride from Water by Adsorption onto Fired Clay Pots: Kinetics and Equilibrium Studies

Contamination of fluoride in groundwater and its effect on human health: a case study in hard rock aquifers of Siddipet, Telangana State, India

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