Interrelationship between Ecological Risk Assessment with Trace Metals Levels in Surface Sediments from Fresco Lagoon, Côte d’Ivoire, West Africa| Chapter 5 | Current Advances in Geography, Environment and Earth Sciences Vol. 8

 The objective of the study was to decide the trace elements concentrations in the sediments on individual hand, and in another way, to identify their main beginnings of contamination. This study will admit an updating of dossier, understanding of the origin and in consideration of contamination of these trace metals through their relating to space dispersion in the aquatic surroundings of the Fresco Lagoon. Contamination of aquatic surroundings by trace metals has been completely studied in current years, on account of the fact that metals are determined, toxic, likely to bioaccumulate, and that they encourage a risk for humans and environments.Surface sediments from Fresco Lagoon (Côte d'Ivoire) were analyzed to evaluate the contamination quality of the area. Concentrations of five picked trace metals (Pb, As, Mn, Zn, and Fe) and organic matter content were persistent in samples collected from ten (10) stations, from June 2019 to March 2020. Trace metals concentrations were driven using an ICP-OES Instrument, while the natural resources details were determined by the bulk loss on explosion. To assess the alloy pollution rank in the studied field, four pollution indications were also planned: Geoaccumulation Index (Igeo), Enrichment Factor (EF), Degree of Contamination (DC), and Pollution Load Index (PLI). Based on Igeo values, the sediments of Fresco Lagoon were in the range of clean to moderately fouled with As, but clean with Zn, Pb, Mn, Fe. The Enrichment determinants of Pb, Zn, As, Mn, and Fe were: 64.22±52.32, 107.04±111.88, 227.29±203.06, 10.25±8.76, and 52.04±47.44 respectively, suggesting that the beginning of those metals was more likely to be anthropogenic. The dropping trend of advancement factors was in this manner: As > Zn > Pb > Fe > Mn. Moreover, the PLI (PLI>1) showed bigger principles at the stations closed to the city area, on account of the influence of direct external beginnings such as land runoff, and different anthropogenic inputs. There was no hazardous hazard for benthic creatures in the sediments from Fresco Lagoon when the trace alloy concentrations were compared to the debris quality guidelines. In conclusion, the findings of the current study have explained the necessity of best choice management of anthropogenic endeavors with regard to trace metals usually, and Pb and As in particular.

Author(s) Details:

Ouattara Yè Nicaise,
Laboratoire de Constitution et Réaction de la Matière de l’Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Côte d’Ivoire.

Trokourey Albert,
Laboratoire de Constitution et Réaction de la Matière de l’Université Félix Houphouët-Boigny, 22 BP 582 Abidjan 22, Côte d’Ivoire.

Tuo Adama Diarrassouba,
Centre de Recherches Océanologiques (CRO), 29, Rue des pêcheurs – BP. V 18 Abidjan, Côte d’Ivoire.

Please see the link here: https://stm.bookpi.org/CAGEES-V8/article/view/8685