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- W4313453347 endingPage "e12452" @default.
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- W4313453347 abstract "The aim of this paper is to assess the impact of gold mining on the water quality of the Lom River at Gankombol (Adamawa Cameroon). Forty-eight (48) water samples are systematically collected during the dry and the rainy season. These water samples are characterized to determine the physico-chemical parameters, major ions and metals. A local geological study is conducted to determine the relationship between the geological units encountered and water contamination. Hydrochemical assessment, multivariate statistical analysis (MSA) and geostatistical modeling (GM) are used to assess contamination. The results indicate that the waters of the Lom River draining the gold mining site are acidic to neutral (5.3–6.9), very turbid (117–510 NTU) with high concentrations of suspended solids (22.89–471 mg/L). The mean concentrations of Fe, Pb, and As exceed the limits set by the World Health Organization (WHO) standards. Pb, As, Cd and Hg concentrations decrease in the rainy season mainly due to dilution by rainwater. The predominant water type is Ca–Mg–HCO3. This surface water is unsuitable for drinking purpose (997.5, Water Quality Index >300) with high level of metal pollution. MSA reveal strong linear correlations between EC-TDS, EC-Na+, TDS-Na+, Pb–As, Cl− –SO42- and TSS-Cd suggesting that the correlated parameters can have common origin. Finally, GM reveal that the lowest values of metals and pollution indices are found upstream of the gold mining site. The weathering of geological units encountered, mining activities and seasons have a major influence on the water quality. Therefore, it appears that decision-makers must take immediate action to decrease pollution and adopt suitable and sustainable remedial solutions." @default.
- W4313453347 created "2023-01-06" @default.
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- W4313453347 date "2022-12-01" @default.
- W4313453347 modified "2023-10-11" @default.
- W4313453347 title "Impact of gold mining on the water quality of the lom river, Gankombol, Cameroon" @default.
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- W4313453347 doi "https://doi.org/10.1016/j.heliyon.2022.e12452" @default.
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