Volume 39, Issue 2, November 2018, Pages 180–193
Jean Thierry Koffi KOFFI1, Jean Louis PERRIN2, Luc SEGUIS3, Bamory Kamagaté4, and Lanciné Droh GONE5
1 Science and management of Environment, Nangui Abrogoua University, Abidjan, Côte d'Ivoire
2 Institut de Recherche pour le Développement - HydroSciences Montpellier, UMR 5569 (IRD, UM, CNRS), Montpellier, France
3 Institut de Recherche pour le Développement - HydroSciences Montpellier, UMR 5569 (IRD, UM, CNRS), Montpellier, France
4 Université NANGUI ABROGOUA, Abidjan, Côte d’Ivoire
5 Science and management of Environment, Nangui Abrogoua University, Abidjan, Côte d'Ivoire
Original language: English
Copyright © 2018 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The study investigates the spatial and temporal variation in water quality parameters at nine different locations in Mé, Bété and Djibi Rivers as well as Aghien Lagoon near Abidjan city for twelve consecutive months. Physicochemical parameters concerned are pH, temperature, electrical conductivity, dissolved oxygen, chlorophyll-a, total phosphorus and total nitrogen. Dissolved heavy metals analyzed are Ni, Cu, Zn, Pb, Cd and As. The assessment of physicochemical parameters shown the deteriorate of water quality with significant changes particularly in the Djibi River with high mean concentrations of total phosphorus (0.51 mgP.L-1) and total nitrogen (7.60 mgN.L-1). Nevertheless, the overall mean concentrations of heavy metals in water Cu (1.43 µg.L-1), Cd (0.06 µg.L-1), Pb (0.2 µg.L-1), Zn (9.16 µg.L-1), As (0.3 µg.L-1), Ni (2.77 µg.L-1) were lower than WHO Standard for Drinking Water Quality. Dissolved heavy metal percentage indicates that the order of concentrations was Zn>Ni>Cu>Pb>As>Cd. Multivariate analysis of variance (ANOVA) was used to group the different sampling sites on the basis of spatial similarities and classification, based on contamination sources and origin of pollutants in rivers and lagoon. In conclusion, this study clearly infers the fact that the cause of pollution in this region is mainly due to domestic and industrial effluents, agriculture and finally natural source.
Author Keywords: water quality, physicochemical parameters, nutrients, dissolved heavy metal, Aghien lagoon and its tributaries, Water quality guidelines.
Jean Thierry Koffi KOFFI1, Jean Louis PERRIN2, Luc SEGUIS3, Bamory Kamagaté4, and Lanciné Droh GONE5
1 Science and management of Environment, Nangui Abrogoua University, Abidjan, Côte d'Ivoire
2 Institut de Recherche pour le Développement - HydroSciences Montpellier, UMR 5569 (IRD, UM, CNRS), Montpellier, France
3 Institut de Recherche pour le Développement - HydroSciences Montpellier, UMR 5569 (IRD, UM, CNRS), Montpellier, France
4 Université NANGUI ABROGOUA, Abidjan, Côte d’Ivoire
5 Science and management of Environment, Nangui Abrogoua University, Abidjan, Côte d'Ivoire
Original language: English
Copyright © 2018 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The study investigates the spatial and temporal variation in water quality parameters at nine different locations in Mé, Bété and Djibi Rivers as well as Aghien Lagoon near Abidjan city for twelve consecutive months. Physicochemical parameters concerned are pH, temperature, electrical conductivity, dissolved oxygen, chlorophyll-a, total phosphorus and total nitrogen. Dissolved heavy metals analyzed are Ni, Cu, Zn, Pb, Cd and As. The assessment of physicochemical parameters shown the deteriorate of water quality with significant changes particularly in the Djibi River with high mean concentrations of total phosphorus (0.51 mgP.L-1) and total nitrogen (7.60 mgN.L-1). Nevertheless, the overall mean concentrations of heavy metals in water Cu (1.43 µg.L-1), Cd (0.06 µg.L-1), Pb (0.2 µg.L-1), Zn (9.16 µg.L-1), As (0.3 µg.L-1), Ni (2.77 µg.L-1) were lower than WHO Standard for Drinking Water Quality. Dissolved heavy metal percentage indicates that the order of concentrations was Zn>Ni>Cu>Pb>As>Cd. Multivariate analysis of variance (ANOVA) was used to group the different sampling sites on the basis of spatial similarities and classification, based on contamination sources and origin of pollutants in rivers and lagoon. In conclusion, this study clearly infers the fact that the cause of pollution in this region is mainly due to domestic and industrial effluents, agriculture and finally natural source.
Author Keywords: water quality, physicochemical parameters, nutrients, dissolved heavy metal, Aghien lagoon and its tributaries, Water quality guidelines.
How to Cite this Article
Jean Thierry Koffi KOFFI, Jean Louis PERRIN, Luc SEGUIS, Bamory Kamagaté, and Lanciné Droh GONE, “Comparative study of physicochemical parameters and dissolved heavy metal dynamics in tropical waters (Bété, Mé, Djibi Rivers and Aghien lagoon) in south of Ivory Coast, West Africa,” International Journal of Innovation and Scientific Research, vol. 39, no. 2, pp. 180–193, November 2018.
