Fulltext

Trace metal distributions in the sediments from river-reservoir systems: case of the Congo River and Lake Ma Vallée, Kinshasa (Democratic Republic of Congo)

Mwanamoki, Paola ; Devarajan, Naresh ; Niane, Birane ; Ngelinkoto, Patience ; Thevenon, Florian ; Nlandu, José ; Mpiana, Pius ; Prabakar, Kandasamy ; Mubedi, Josué ; Kabele, Christophe ; Wildi, Walter ; Poté, John

In: Environmental Science and Pollution Research, 2015, vol. 22, no. 1, p. 586-597

Zum persönliche Liste hinzufügen
    Titel
    • Trace metal distributions in the sediments from river-reservoir systems: case of the Congo River and Lake Ma Vallée, Kinshasa (Democratic Republic of Congo)
    Autor
    • Mwanamoki, Paola. Section Nutrition Diététique, Institut Supérieur des Techniques Médicales/Kinshasa, B.P. 774, Kinshasa XI, Democratic Republic of Congo
    • Devarajan, Naresh. Faculty of Science, Forel Institute and Institute of Environmental Sciences, University of Geneva, CP 416, 1290, Versoix, Switzerland
    • Niane, Birane. Faculty of Science, Forel Institute and Institute of Environmental Sciences, University of Geneva, CP 416, 1290, Versoix, Switzerland
    • Ngelinkoto, Patience. Université Pédagogique Nationale (UPN), Croisement Route de Matadi et Avenue de la Libération, Quartier Binza/UPN, B.P. 8815, Kinshasa, Democratic Republic of Congo
    • Thevenon, Florian. Faculty of Science, Forel Institute and Institute of Environmental Sciences, University of Geneva, CP 416, 1290, Versoix, Switzerland
    • Nlandu, José. Commissariat général à l'énergie atomique, Département de Physique des sols et Hydrologie, B.P.868, Kinshasa XI, Democratic Republic of Congo
    • Mpiana, Pius. Faculty of Science, Department of Chemistry, University of Kinshasa (UNIKIN), B.P. 190, Kinshasa XI, Democratic Republic of Congo
    • Prabakar, Kandasamy. Postgraduate and Research Department of Zoology, Jamal Mohamed College, 620020, Tiruchirappalli, Tamil Nadu, India
    • Mubedi, Josué. Université Pédagogique Nationale (UPN), Croisement Route de Matadi et Avenue de la Libération, Quartier Binza/UPN, B.P. 8815, Kinshasa, Democratic Republic of Congo
    • Kabele, Christophe. Faculty of Science, Department of Chemistry, University of Kinshasa (UNIKIN), B.P. 190, Kinshasa XI, Democratic Republic of Congo
    • Wildi, Walter. Faculty of Science, Forel Institute and Institute of Environmental Sciences, University of Geneva, CP 416, 1290, Versoix, Switzerland
    • Poté, John. Faculty of Science, Forel Institute and Institute of Environmental Sciences, University of Geneva, CP 416, 1290, Versoix, Switzerland
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Environmental Science and Pollution Research, 2015, vol. 22, no. 1, p. 586-597. Springer Berlin Heidelberg
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:331254
    Summary
    The contamination of drinking water resources by toxic metals is a major problem in many parts of the world, particularly in dense populated areas of developing countries that lack wastewater treatment facilities. The present study characterizes the recent evolution with time of some contaminants deposited in the Congo River and Lake Ma Vallée, both located in the vicinity of the large city of Kinshasa, capital of Democratic Republic of Congo (DRC). Physicochemical parameters including grain size distribution, organic matter and trace element concentrations were measured in sediment cores sampled from Congo River (n = 3) and Lake Ma Vallée (n = 2). The maximum concentration of trace elements in sediment profiles was found in the samples from the sites of Pool Malebo, with the values of 107.2, 111.7, 88.6, 39.3, 15.4, 6.1 and 4.7mgkg−1 for Cr, Ni, Zn, Cu, Pb, As and Hg, respectively. This site, which is characterized by intense human activities, is especially well known for the construction of numerous boats that are used for regular navigation on Congo River. Concerning Lake Ma Vallée, the concentration of all metals are generally low, with maximum values of 26.3, 53.6, 16.1, 15.3, 6.5 and 1.8mgkg−1 for Cr, Ni, Zn, Cu, Pb and As, respectively. However, the comparison of the metal profiles retrieved from the different sampled cores also reveals specific variations. The results of this study point out the sediment pollution by toxic metals in the Congo River Basin. This research presents useful tools for the evaluation of sediment contamination of river-reservoir systems.