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Impact of municipal solid waste dumpsites on trace metal contamination levels in the surrounding area: a case study in West Africa, Abidjan, Cote d’Ivoire

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Abstract

The impact of uncontrolled municipal dumping sites on metal contamination in the surrounding waters, sediments, and soils are of great concern in many developing countries. Total concentrations of trace metals Cd, Zn, Cu, Pb, Ni, and Co were measured in 33 sediments collected in the vicinity of the Akouedo dumpsite (Abidjan, Cote d’Ivoire) and in a baseline station. The Cu, Zn, Cd, and Pb concentrations in surface sediments around the dumpsite were at least three times higher than those at the reference station, suggesting that the Akouedo dumping site is a significant contamination source of these metals to the surrounding sediments. The extent of contamination affects sediment as deep as 100 cm. Sediment pH and total organic carbon content control the distribution of Cu, Zn, and Cd in subsurface sediments. Significant Cd, Zn, and Cu enrichments were measured at the dumpsite and its surrounding environment. Zn concentrations in the sediments might cause high ecological risks at 46% of the samples based on the sediment quality guidelines (SQGs). Single and sequential extraction results showed a low mobility rate of Cd, Cu, Pb, and Ni from sediments around the dumpsite. However, the results suggest that the high total metal concentrations in the dumpsite sediments have resulted in a significant metal load in the surrounding environment.

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Acknowledgements

The authors are thankful to Dr. Carl H. Lamborg for his help (to determine total metal concentrations in the sediments by inductively coupled plasma optical emission spectrophotometry at Woods Hole Oceanographic Institution, MA, USA). This work is a part of the Ministère de l’Enseignement Supérieur et de la Recherche Scientifique (Cote d’Ivoire) supported Institutional Project (Plan quinquennal). This article bears CRO contribution “BGF, chapter 600.”

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Naminata Sangaré Soumahoro: Conceptualization, data curation, formal analysis, investigation, methodology, validation, writing-original draft, writing-review draft, and editing. N’guessan Louis Berenger Kouassi: Conceptualization, data curation, formal analysis, investigation, methodology, validation, writing-original draft, writing-review draft, and editing. Koffi Marcellin Yao: Conceptualization, data curation, formal analysis, investigation, methodology, supervision, validation, writing-original draft, writing-review draft, and editing. Edith Kouassi Kwa-Koffi: Conceptualization, data curation, formal analysis, investigation, methodology, supervision, validation, writing-original draft, writing-review draft, and editing. Aka Marcel Kouassi: Conceptualization, data curation, formal analysis, investigation, methodology, supervision, validation, writing-original draft, writing-review draft, and editing. Albert Trokourey: Conceptualization, data curation, formal analysis, investigation, methodology, supervision, validation, writing-original draft, writing-review draft, and editing.

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Correspondence to Naminata Sangaré Soumahoro.

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Responsible Editor: Philippe Garrigues

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Soumahoro, N.S., Kouassi, N.L.B., Yao, K.M. et al. Impact of municipal solid waste dumpsites on trace metal contamination levels in the surrounding area: a case study in West Africa, Abidjan, Cote d’Ivoire. Environ Sci Pollut Res 28, 30425–30435 (2021). https://doi.org/10.1007/s11356-021-13987-3

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  • DOI: https://doi.org/10.1007/s11356-021-13987-3

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