Volume 5, Issue 1, January 2017, Page: 1-11
Heavy Metals Pollution in Water, Sediments and Fish of Léré Lake, Western Mayo Kebbi (Chad)
Tchadanaye New Mahamat, Department of Chemistry, Faculty of Exact and Applied Science, University of N’Djamena, N’Djamena, Chad
Soledé Kidjakebo, Department of Chemistry, Faculty of Science, University of Ngaoundere, Ngaoundere, Cameroon
Souvalbé Kandibé Abel, Department of Chemistry, Faculty of Science, University of Ngaoundere, Ngaoundere, Cameroon
Noumi Guy Bertrand, Department of Chemistry, Faculty of Science, University of Ngaoundere, Ngaoundere, Cameroon
Received: Dec. 21, 2016;       Accepted: Jan. 4, 2017;       Published: Feb. 17, 2017
DOI: 10.11648/j.ijepp.20170501.11      View  3583      Downloads  126
The present study is a contribution to the physical and chemical analysis of water, sediments and fish in order to determine the pollution status of Léré lake in Western Mayo-Kebbi (Chad). The study investigates parameters such as temperature, pH, conductivity, turbidity, dissolved oxygen, BDO5 and CDO. Likewise, concentrations of trace elements known as heavy metals Cu, Cd, Pb, Fe, Mn, As, Zn, Ni and Cr of which some are especially toxic were determined in water, sediments and fish. Results of heavy metals analysis: Cu (0.95 - 3.90 mg/l), Pb (0.13 - 0.75 mg/l), Ni (0.40 - 6.40 mg/l), Cr (0.03 - 0.50 mg/l), As(0.03 - 0.18 mg/l), Cd (0.07 - 0.15 mg/l) and Zn (0.98 - 15.30 mg/l) as well as data on CDO (26-50 mg/l) and BDO5 (17-34 mg/l) showed that water pollution of the Léré lake was very significant though consumed by surrounding populations. The same report can be made on strongly contaminated sediments: Ni (5.9 mg/Kg), As (2.71 mg/Kg), Cr (6.60 mg/Kg), Cd (0.50 mg/Kg) and Mn (0.26 mg/Kg). Over all, within the framework of this study, fish flesh was less contaminated than fish gills.
Physicochemical Parameters, Pollution, Sediment, Fish, Léré Lake
To cite this article
Tchadanaye New Mahamat, Soledé Kidjakebo, Souvalbé Kandibé Abel, Noumi Guy Bertrand, Heavy Metals Pollution in Water, Sediments and Fish of Léré Lake, Western Mayo Kebbi (Chad), International Journal of Environmental Protection and Policy. Vol. 5, No. 1, 2017, pp. 1-11. doi: 10.11648/j.ijepp.20170501.11
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