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Analysis Study Research Paper | Earth Science and Engineering | Chad | Volume 14 Issue 2, February 2025 | Popularity: 5 / 10
Assessment of Physico - Chemical Quality of Surface Waters in Lake Lere Basin, Chad
Tchinfanbe SOUAREBA, Jean-Claude Doumnang MBAIGANE, Mahamat Nour ABDALLAH, Mianpereum TARKODJIEL, Bertrand Guy NOUMI
Abstract: The Lake Lere basin is subject to human pressure, which results in the degradation of water quality. . In order to establish a diagnosis of surface water quality, the aim of this study was to assess the physico - chemical parameters of surface water in the Lake Lere basin. Water samples were analyzed using various analytical methods to assess these parameters. Physical parameters were measured in situ using the electrochemical method with an electrical multiparameter. Chemical parameters were analysed using the spectro - colorimetric method with electronic spectrophotometers. Results indicate that the water in Lake Lere has an average temperature of 30.1?C, a neutral pH of 6.9, and low mineral content with an average conductivity of 166.03 ?S/cm. The average concentrations of various mineral ions were, for the most part, in line with international standards. Thus, we noted in mg/L, respectively: sodium Na+ (8.08), potassium K+ (1.92), calcium Ca2+ (70.95), magnesium Mg2+ (57.93), chloride Cl - (0.85), nitrate NO3 - (19.35), sulphate SO42 - (21), phosphate PO43 - (4.58) and silica SiO2 (52.13). The results of the principal component analysis showed that the different groups of sites were characterised by a contribution of nutrients mainly from agricultural activities and chemical alteration of the soils. The Lake Lere basin faces significant human pressure, leading to water quality degradation. This study assesses the physico - chemical parameters of surface water in the basin. Water samples were analyzed using electrochemical and spectro - colorimetric methods. Results indicate an average water temperature of 30.1?C, a neutral pH of 6.9, and low mineral content with an average conductivity of 166.03 ?S/cm. The principal component analysis revealed that agricultural activities and soil chemical alterations influence water quality. The study also identified two primary chemical facies: bicarbonate - calcium - magnesium and sulfate - calcium - magnesium. The Riverside diagram analysis suggests that the water is suitable for agricultural use.
Keywords: Physico - chemistry, Hydrochemistry, Surface water, Water quality, Lake Lere, Chad
Edition: Volume 14 Issue 2, February 2025
Pages: 1853 - 1860
DOI: https://www.doi.org/10.21275/SR241005193410
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