Study of Pollution by Anionic Surfactants and Orthophosphates in M’koa Lake (Jacqueville, Côte d’Ivoire)
American Journal of Environmental Protection
Volume 7, Issue 6, December 2018, Pages: 70-78
Received: Nov. 14, 2018; Accepted: Dec. 11, 2018; Published: Jan. 2, 2019
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Ballet Tiama Guy Nicaise, Laboratory of Environmental Sciences, Faculty of Science and Environmental Management, University Nangui Abrogoua, Abidjan, Côte d’Ivoire
Effebi Kôkôh Rose, Laboratory of Geosciences and Environment, Faculty of Science and Environmental Management, University Nangui Abrogoua, Abidjan, Côte d’Ivoire
Ako Olga Yolande Aké, Laboratory of Environmental Sciences, Faculty of Science and Environmental Management, University Nangui Abrogoua, Abidjan, Côte d’Ivoire
Kpidi Yapo Habib, Laboratory of Environmental Sciences, Faculty of Science and Environmental Management, University Nangui Abrogoua, Abidjan, Côte d’Ivoire
Yapo Ossey Bernard, Laboratory of Environmental Sciences, Faculty of Science and Environmental Management, University Nangui Abrogoua, Abidjan, Côte d’Ivoire; Central Environmental Laboratory of the Ivorian Anti-Pollution Center (LCE-CIAPOL), Abidjan, Côte d'Ivoire
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This study aims to assess the pollution of the surface water from M’koa Lake by both anionic surfactants and orthophosphates, and to identify the sources of pollution by these compounds. Three sampling campaigns were conducted at different seasons at six (6) sampling stations, identified in M'koa Lake by taking into account potential sources of pollution. The measurement of anionic surfactant concentrations was performed by the methylene blue colorimetric method, and the determination of orthophosphates was performed by the vanadomolybdophosphoric acid colorimetric method. In addition, the samples were analyzed in order to find six physico-chemical parameters of surface water quality which are temperature, pH, electrical conductivity, turbidity, oxygen saturation, transparency. The determination of these parameters were made according to both the French AFNOR standard and the methods described by Rodier. The obtained average concentrations of anionic surfactants in the water of M’koa Lake range from 0.23 ± 0.04 mg.L-1 to 1.43 ± 0.68 mg.L-1. Concerning orthophosphates’ content they range from 0.12 ± 0.05 mg.L-1 to 0.17 ± 0.04 mg.L-1. These results indicate that M’koa Lake is subjected to pollution both by anionic surfactants and pollutant enriched by orthophosphate. And, the presence of orthophosphates in lake waters was not due solely to detergents. Washing stations, Berge 1 and 2, and M’koa hotel have the highest levels of anionic surfactants. Also, turbidity and transparency values indicate water quality deterioration of M’koa Lake favoured by the presence of phytoplankton corresponding to the eutrophication of the water of the studied Lake.
Detergent, Organic Pollution, Physico-chemical Parameters, Eutrophication Surface Water, Fresh Water
To cite this article
Ballet Tiama Guy Nicaise, Effebi Kôkôh Rose, Ako Olga Yolande Aké, Kpidi Yapo Habib, Yapo Ossey Bernard, Study of Pollution by Anionic Surfactants and Orthophosphates in M’koa Lake (Jacqueville, Côte d’Ivoire), American Journal of Environmental Protection. Vol. 7, No. 6, 2018, pp. 70-78. doi: 10.11648/j.ajep.20180706.11
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