Mapping soil susceptibility to crude oil pollution in the region of Delta, South-South Nigeria: A proportional study of environmetrics, health, ecological risks, and geospatial evaluation

Scientific African

Oluwafunke Job¹  Tunde Imoobe²  Benjamin Okpara³  Lawrence Ikechukwu Ezemonye³  Bawo Frank Kubeyinje³  Adetunji Charles Oluwaseun³  Alex Ajeh Enuneku⁴  Daniel Ingo Hefft⁵  Osikemekha Anthony Anani⁶  Charming Osaro Asemota⁷  Emmanuel Temiotan Ogbomida⁷ 

[1] Corresponding author.;Laboratory for Ecotoxicology and Environmental Forensics, University of Benin, PMB 1154, Benin City, Nigeria;Department of Animal and Environmental Biology, Faculty of Life Sciences, University of Benin, PMB 1154, Benin City, Nigeria;Department of Environmental Management and Toxicology, Faculty of Life Sciences, University of Benin, PMB 1154, Benin City, Nigeria;Laboratory for Ecotoxicology and Environmental Forensics, University of Benin, PMB 1154, Benin City, Nigeria;Laboratory for Ecotoxicology and Forensic Biology, Department of Biological Science, Animal and Environmental Unit, Faculty of Science, Edo State University Uzairue, PMB 04, Auchi, Edo State, Nigeria;National Centre for Energy and Environment, Energy Commission of Nigeria, University of Benin, PMB 1154, Benin City, Nigeria;

关键词: Interpolation;    Mapping;    PCA;    Clusters;    Pollution;    Kriging;   

DOI  :  

来源: DOAJ

【 摘 要 】

Today, the threat of crude oil pollution globally, has been a resounding epoch of ecosystem degradation. This affects the lives of flora and fauna in the ecosystem as well as influence the human's economic needs. The aim of this study is to assess the heavy metals and petroleum hydrocarbons concentrations (crude oil pollutants) in agricultural soils of selected communities in Niger-Delta region. Models were used to assess the crude oil pollution loads and its source apportionment. The results from the principal components analysis (PCA) for the heavy metals (HMs) and total petroleum hydrocarbons (TPHs) in soils showed high loading factors > 0.32. The source allotment were both of crustal and human origin. The cluster analysis for the physical and chemical parameters of the HMs and TPHs showed that stations 1, 5, 2, 4, 6 and 7 and 2, 6, 7 and 9 were similar respectively. The outcome of the ecological risk status of the sampled soils, showed that the metals in the nine sampling stations were at the slight risk level with Cd being the main donor. The results of the health risk for both non-carcinogenic and carcinogenic pathways for the metals were <1 respectively, indicating no human health risk. The results obtained from the kriging contour mapping of the HMs in the sampled stations, indicated mean variability across the stations with Zn and Pb having the highest values. This might be linked to the high concentration from the crude oil impact on the soil that might possibly elicit ecological and health risks (non-carcinogenic and carcinogenic) when ingested by plants and humans. We recommend steady assessment and monitoring of the soils in order to provide reference point data and information for proper justification and management alternatives.

【 授权许可】

Unknown