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Hydrochemical Characterization of Groundwater in the Sub-Prefecture of kokumbo (Ivory Coast)

Journal of Geoscience and Environment Protection 2023年第6期11卷 169-183页

作者： Armel Kouadio Koblan Affoué Bénédicte Koffi Aminata Diomandé Deh Serges Kouakou Kan Jean Kouamé Jean Patrice Jourda Laboratory of Soil Water and Geomaterials Sciences (LSEG) U.F.R. Earth Sciences and Mining Resources (STRM) University of Felix Houphou&#235t-Boigny Abidjan Ivory Coast University Center for Research and Application in Remote Sensing (CURAT) University of Félix Houphou&#235t-Boigny Abidjan Ivory Coast

In the kokumbo sub-prefecture, groundwater extraction related to gold panning remains a major concern, not to mention the deterioration of its quality. Among the work carried out on water resources, no scientific interest has been shown in groundwater to characterise it. The objective of this study is to contribute to the knowledge of its physico-chemical quality. In situ measurements and physico-chemical analyses using an inductively coupled plasma optical emission spectrometer (ICP-OES) were carried out on five (5) human-powered pump (HPP) water samples and six (6) well water samples collected during low and high water seasons. The results show that the physico-chemical quality of the water, which is sometimes turbid, is satisfactory in terms of the mineralization of the borehole and well water, and the pH of the boreholes, while the temperatures of the two waters and the pH of the wells do not comply with WHO standards. The levels of major ions are recommended for consumption. The waters are classified as predominantly bicarbonate-calcium and magnesium (73%) in the dry season and in the flood season, with an equal split between bicarbonate-calcium and magnesium (45.5%) and chloride-calcium and magnesium (45.5%). The elimination of materials responsible for the turbidity of certain waters by managers or populations is essential for drinking water use. The risk linked to this element means that these turbid waters are not recommended for drinking water.

关键词： Groundwater Physico-Chemical Parameter Hydrochemical Facies kokumbo

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