Petroleum contamination is a significant contributor of elevated level of toxic heavy metals, which are of great concern to human health, due to their non-biodegradable nature. Agaye community has experienced frequent gasoline spills due to pipeline vandalisation, resulting in the contamination of soil and water sources. The concentrations of metals (Cd, Cr, Cu, Mn, Ni, Pb, V and Zn) in groundwater, surface-water and soil were determined from a total of 216 samples acquired bi-monthly for two years by Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) to evaluate the impact of oil spills. Multivariate analyses using principal component analysis (PCA) and cluster analysis (CA) were also used to study the interactions between metals and identify the possible sources of contamination. The concentrations of heavy metals in soil and water samples (surface and groundwater) were in decreasing order of Mn > Ni > Zn > Cu > V > Cr > Pb > Cd and Ni > Zn > V > Cu > Mn > Pb > Cr > Cd respectively. Ni concentration ranged from 0.42–8.05 mg kg⁻¹ and 0.10–2.85 mg L⁻¹ for soil and groundwater respectively. Ni and V were more enhanced (P < 0.05) in soil samples. This study showed that there was significant relationship between elevated levels of Cr, Cu, Ni and Zn and oil spillage, due to petroleum spills and that residents were vulnerable to and at greater risk of non-carcinogenic hazards if they consumed groundwater. Multivariate analyses showed significant anthropogenic intrusions of two diagnostic heavy metals (Ni and V) for petroleum contamination in the soils and water sources.

石油污染是有毒重金属含量升高的重要原因，有毒重金属由于其不可生物降解的性质而对人类健康至关重要。由于管道的破坏，Agaye社区经常发生汽油泄漏，导致土壤和水源受到污染。通过电感耦合等离子体光学系统，每两年两次获取的216个样品，在两年的时间内确定了地下水，地表水和土壤中的金属（Cd，Cr，Cu，Mn，Ni，Pb，V和Zn）的浓度（Cd，Cr，Cu，Mn，Ni，Pb，V和Zn）发射光谱（ICP-OES）评估溢油的影响。使用主成分分析（PCA）和聚类分析（CA）进行的多变量分析也用于研究金属之间的相互作用，并确定可能的污染源。土壤和水样（地表水和地下水）中的重金属浓度降序为Mn> Ni> Zn> Cu> V> Cr> Pb> Cd和Ni> Zn> V> Cu> Mn> Pb> Cr>镉分别。镍浓度范围为0.42-8.05 mg / kg对于土壤和地下水，分别为^-1和0.10-2.85 mg L ^-1。 土壤样品中的镍和钒含量更高（P <0.05）。这项研究表明，由于石油泄漏，Cr，Cu，Ni和Zn的水平升高与石油泄漏之间存在显着的关系，居民如果食用地下水，则很容易受到非致癌危害的威胁，并具有更大的非致癌危险。多变量分析表明，两种诊断性重金属（Ni和V）在人为入侵方面具有显着的土壤和水源中石油污染的特征。