Physico-chimie et qualité des eaux des forages d’hydraulique villageoise dans la région centrale au Togo
| Autor: | Gbandi Djaneye-Boundjou, Akpénè Amenuvevega Dougna, Tomkouani Kodom, Masamaéya Dadja-Toyo Gnazou, Moctar L. Bawa |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | International Journal of Biological and Chemical Sciences; Vol 9, No 4 (2015); 2249-2262 |
| ISSN: | 1997-342X 1991-8631 |
| DOI: | 10.4314/ijbcs.v9i4.42 |
| Popis: | Cette etude a porte sur la caracterisation physico-chimique des eaux de forages d’hydraulique villageoise des aquiferes du socle de la region centrale du Togo. Au total, 52 echantillons d’eau ont ete analyses suivant les normes AFNOR. L’analyse en composantes principales (ACP) a permis de faire ressortir les correlations entre les differents parametres physico-chimiques (16) et de comprendre les processus pouvant etre a l’origine de la mineralisation. Les cartes de distribution de la conductivite et des nitrates ont ete ensuite realisees. Les travaux revelent que du fait de la predominance des ions bicarbonate, calcium et magnesium, les eaux sont pour la plupart bicarbonatees calciques et magnesiennes. Les eaux sont moyennement mineralisees et de qualite acceptable. Cependant, on note que quelques echantillons presentent des teneurs de parametres physico-chimiques superieures aux directives de l’OMS et sont contigus aux eaux respectant ces normes traduisant ainsi le caractere discontinu et heterogene de l’aquifere du socle. © 2015 International Formulae Group. All rights reserved. Mots cles: Region centrale, Togo, facies hydrochimiques, pollution, eaux souterraines, socle English Abstract This study focused on the physicochemical characterization of rural water supply drilling made on base aquifers of central region of Togo. In total, 52 samples of water were analyzed according to the AFNOR Standards. The principal component analysis (PCA) allowed to highlight correlations between different physico-chemical parameters (16) and to understand the processes that can explain source of the mineralization. Conductivity distribution and nitrate maps were then performed. The work reveals that due to the predominance of bicarbonate calcium and magnesium ions, water is mostly calcic and magnesian bicarbonated. Water is moderately mineralized with acceptable quality. However, we note that some samples exhibit physicochemical parameters levels higher than those of WHO guidelines and are contiguous to samples up to standard showing discontinuous and heterogeneous nature of base aquifer. © 2015 International Formulae Group. All rights reserved. Keywords: Central Region, Togo, hydrochemical facies, pollution, groundwater, base |
| Databáze: | OpenAIRE |
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