Hydrogeochemistry and environmental isotope investigations of the North Diamaré Plain, northern Cameroon

Njitchoua, R.; Ngatcha, Benjamin Ngounou

doi:10.1016/s0899-5362(97)00105-x

Cited by 28 publications

(18 citation statements)

References 14 publications

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“…The pH of the groundwater ranges between 4.3 and 7.9, with a mean of 5.8, an indication that the dissolved carbonates are predominantly in the form of HCO 3 (Adams et al 2001). The higher calculated (using PHREEQC) partial pressure of carbon dioxide (P CO 2 ) with which waters equilibrated in the infiltrating water (10 -0.24 -10 -2.3 atm; Table 1) compared to atmospheric air (10 -3.5 atm) suggests that the waters have gained CO 2 may be from root respiration, decay of soil organic matter, or dissolution of carbonate minerals (Njitchoua and Ngounou Ngatcha 1997). Groundwater temperatures range between 25 and 30.4°C (mean 27.6°C).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of groundwater quality and its suitability for drinking, domestic, and agricultural uses in the Banana Plain (Mbanga, Njombe, Penja) of the Cameroon Volcanic Line

Ako

Shimada

Hosono

et al. 2011

Environ Geochem Health

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Groundwater quality of the Banana Plain (Mbanga, Njombe, Penja-Cameroon) was assessed for its suitability for drinking, domestic, and agricultural uses. A total of 67 groundwater samples were collected from open wells, springs, and boreholes. Samples were analyzed for physicochemical properties, major ions, and dissolved silica. In 95% of groundwater samples, calcium is the dominant cation, while sodium dominates in 5% of the samples. Eighty percent of the samples have HCO(3) as major anion, and in 20%, NO(3) is the major anion. Main water types in the study area are CaHCO(3), CaMgHCO(3), CaNaHCO(3), and CaNaNO(3)ClHCO(3). CO(2)-driven weathering of silicate minerals followed by cation exchange seemingly controls largely the concentrations of major ions in the groundwaters of this area. Nitrate, sulfate, and chloride concentrations strongly express the impact of anthropogenic activities (agriculture and domestic activities) on groundwater quality. Sixty-four percent of the waters have nitrate concentrations higher than the drinking water limit. Also limiting groundwater use for potable and domestic purposes are contents of Ca(2+), Mg(2+) and HCO(3) (-) and total hardness (TH) that exceed World Health Organization (WHO) standards. Irrigational suitability of groundwaters in the study area was also evaluated, and results show that all the samples are fit for irrigation. Groundwater quality in the Banana Plain is impeded by natural geology and anthropogenic activities, and proper groundwater management strategies are necessary to protect sustainably this valuable resource.

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Section: Resultsmentioning

confidence: 99%

Evaluation of groundwater quality and its suitability for drinking, domestic, and agricultural uses in the Banana Plain (Mbanga, Njombe, Penja) of the Cameroon Volcanic Line

Ako

Shimada

Hosono

et al. 2011

Environ Geochem Health

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“…-can be ascribed to the weathering of alumino-silicate minerals [21][22] or the formation of carbonic acid when CO 2 resulting from the decay of organic matter combines with rainwater. The levels of NO 3 -in the samples were generally low (< 2 mg/L) and constituted 3% of the total anions.…”

Section: +mentioning

confidence: 99%

“…Also, the incongruent dissolution of silicate minerals that react with dissolved CO 2 gas derived directly from the atmosphere, decay of organic matter in the soil or photosynthesis results in the release of major cations, bicarbonate and dissolved silica [36]. Comparable findings have been reported in some natural waters of Cameroon [21,[37][38]27]. These authors attributed the solute composition of natural waters to the hydrolysis of the rock-forming minerals and the incongruent weathering reactions.…”

Section: Regional Spatial Distribution and Sources Of Enriched Geochementioning

confidence: 99%

Regional Hydrogeochemical Mapping for Environmental Studies in the Mineralized Lom Basin, East Cameroon: A Pre-industrial Mining Survey

Mimba¹

2017

HYD

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Abstract:The present study is the first appraisal of regional hydrogeochemical programme for environmental assessment of the mineralized Lom Basin in East Cameroon. Fifty-two streamwater samples were collected and analysed for major cations ( -had similar distribution trends reflecting weathering from the parent rocks. Sulphate distribution correlated with the occurrence of sulphide minerals associated with hydrothermal gold mineralization in the area while the distribution patterns of NO 3 -and Cl -reflected pollution from domestic activities within the municipality. Overall, the chemistry of stream water in the Lom Basin is mainly controlled by silicate weathering with only minor anthropogenic influence. This study forms an analogue for hydrogeochemical mapping in other mineralized terrains in Cameroon.

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“…The hollow aquifers have an average amplitude of 40 m, the most important of which are located in Bornou (Nigeria), Yaéré in Cameroon and in Chari-Baguirmi plain (Chad). These hydrodynamic abnormalities were recognized on the entire Sahel and have been the subject of several theories about their formations (Durand, 1982;Dieng et al, 1990;Ndiaye et al, 1993;Njitchoua and Ngounou Ngatcha, 1997;Djoret, 2000;Abderamane, 2012;Camille, 2015).…”

Section: Hydrodynamicmentioning

confidence: 99%

Characterization and Aquifer Functioning System of Haraz Al Biar (North Chari Baguirmi)

Nour¹,

Hamit²,

Ngatcha³

et al. 2017

Int.J.Curr.Res.Aca.Rev.

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Article InfoHaraz Al Biar (Northern Chari-Baguirmi) is located in the semi-arid zone, limited to the north by Lake Chad and on the west by Chari -Logone. The study of Haraz Al Biar aquifer system aims to improve its knowledge for the sustainable management of groundwater resources. In the study area, water sampling campaigns were realized. These samples have been the subject of the study of hydrodynamic and hydrochemical parameters of the aquifer system. The piezometric data show that the transfer of water from Lake Chad is hydraulically possible because the level of the lake is above the static level of the water table. The chemical data allowed to distinguish the difference between bicarbonate and sulphate facies.

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Hydrogeochemistry and environmental isotope investigations of the North Diamaré Plain, northern Cameroon

Cited by 28 publications

References 14 publications

Evaluation of groundwater quality and its suitability for drinking, domestic, and agricultural uses in the Banana Plain (Mbanga, Njombe, Penja) of the Cameroon Volcanic Line

Evaluation of groundwater quality and its suitability for drinking, domestic, and agricultural uses in the Banana Plain (Mbanga, Njombe, Penja) of the Cameroon Volcanic Line

Regional Hydrogeochemical Mapping for Environmental Studies in the Mineralized Lom Basin, East Cameroon: A Pre-industrial Mining Survey

Characterization and Aquifer Functioning System of Haraz Al Biar (North Chari Baguirmi)

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