Ecological evaluation and modeling of metallic contamination levels in soils from the reclaimed section of River Otamiri wetland, Southeastern Nigeria

• Authors: Francis Chizoruo Ibe , Ujupaul Joy Margret Ikezu , Blessing Chinonso Adindu , Ahmad Shehu Ahmad , Fidelis Opiah Chukwu
• Languages of publication: EN

Abstracts

EN

The study carried out ecological evaluation and modeling of metallic contamination levels in soils from the reclaimed section of River Otamiri wetland in Southeastern Nigeria. The study was aimed at ecological evaluation and modeling of contaminant levels of the reclaimed wetland soils. This was in order to determine the extent of metallic contamination of the wetland. The metallic contamination level was established with the help of Energy dispersive X-ray fluorescence spectroscopy (EDXFS). Pollution models were used to carry out ecological evaluation of the metallic contamination levels. The result revealed that the mean values of the metals were in the order; 0.29 < 0.59 < 0.88 < 16.74 < 50.44 < 129.48 < 259.34 < 341.22 < 518.70 < 563.14 < 39888.63 mg/kg for Cd <As < Ag < Cr < Pb < Mn < Zn < Cu < Co < Ni < Fe respectively. In comparison with the Department of Petroleum Resources (DPR) target value, Cr, Mn, As, Pb, and Cd had mean values below the target value; however, the mean values of Co, Fe, Ni, Cu, Zn, and Ag exceeded the DPR value. The PLI values were all >1 for all the samples, which is a serious ecological concern for the reclaimed wetland as it implies that the area is polluted. Geo-accumulation index analysis ranged from no accumulation to moderate accumulation. Result of ecological risk index analysis point to the fact that the risk posed by the metals ranged from low to high risk. The radar plot, principal component analysis (PCA) and hierarchical component analysis (HCA) suggested that related sources were responsible for the metallic contamination of the wetland. Hence, there is need to discontinue further reclamation of the area for human habitation due to elevated metallic contamination of the area.

Keywords

EN

River Otamiri; contamination; ecological evaluation; metallic elements; wetland

Discipline

• ENVIRONMENT_&_ECOLOGY: ENVIRONMENT & ECOLOGY

• Publisher: Scientific Publishing House „DARWIN”
• Journal: World News of Natural Sciences
• Year: 2025
• Volume: 58
• Pages: 301-317

Contributors

author

Francis Chizoruo Ibe

• Department of Chemistry, Imo State University Owerri, Imo State, Nigeria

author

Ujupaul Joy Margret Ikezu

• Department of Chemistry, Imo State University Owerri, Imo State, Nigeria

author

Blessing Chinonso Adindu

• Department of Chemistry, Imo State University Owerri, Imo State, Nigeria

author

Ahmad Shehu Ahmad

• CPES, Federal University of Technology Minna, Niger State, Nigeria

author

Fidelis Opiah Chukwu

• Department of Chemistry, Imo State University Owerri, Imo State, Nigeria

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• Document Type: article