Investigation of hydrocarbon contaminant levels and groundwater quality assessment in parts of bonny island, rivers state of Nigeria

Document Type : Research paper


Department of Geology, Faculty of Science, University of Port Harcourt, Nigeria


This study investigates the environmental impact of a recent oil spill incident in the Bonny terminal using groundwater media. The objective was to establish the presence of Contaminants of Concern (COC), determine, quantify and model spilled volumeIEEE Transactions on Components, Packaging, and Manufacturing Technology and ascertain potential health risks associated with the spill incident. The COC included Total Petroleum Hydrocarbons (TPH), Polyaromatic Hydrocarbons (PAH), and BTEX compounds. Groundwater was sampled in the vicinity of the spill incidents and further away into the surrounding communities. Groundwater assessment showed that TPH ranges from 9.04 to 20,600 µg/L with a mean value of 2526.90 ± 6392.40 µg/L. Apart from four boreholes, all others had TPH values exceeding the DPR target value of 50 µg/L. PAH was recorded only at three boreholes, with values: 0.13, 1.07, and 0.25 µg/L, respectively. Meanwhile, BTEX compounds had concentration (5910 µg/L) that exceeded the Directorate of Petroleum Resources (DPR) target value of 0.8 µg/L over 7000 times. The BW-3 is most deteriorated in water quality. These contaminated borehole-sampling locations are positioned at the vicinity of the tank farm, at higher hydraulic heads and hence, might not pose much health risk to the surrounding communities. Groundwater movement in the area is towards the Bonny River in the southwestern part of the area. This study, therefore recommends remedial actions be taken immediately to prevent health risks in the tank farm area.

Graphical Abstract

Investigation of hydrocarbon contaminant levels and groundwater quality assessment in parts of bonny island, rivers state of Nigeria


  • The Niger Delta region has been rated as the most oil-impacted and polluted environment globally.
  • Pollution caused by petroleum hydrocarbons is one of the most common environmental issues in the study area.
  • The aim of the research is to assess groundwater quality around an oil spill site in Bonny, Rivers State.
  • Government and relevant stakeholders should urgently take proactive steps to protect groundwater resources.


Main Subjects

Adebiyi, F.M., Oluyemi, E.A., Adeyemi, A.F., Akande, A.A., Ajayi, O.S., 2015. A Measurement of Selected Polycyclic Aromatic Hydrocarbons in Petroleum Product Contaminated Soils Using a Gas Chromatograph. Pet. Sci. Technol. 33, 62–71.
Chukwu, C.G., Udensi, E.E., Abraham, E.M., Ekwe, A.C., Selemo, A.O., 2018. Geothermal energy potential from analysis of aeromagnetic data of part of the Niger-delta basin, southern Nigeria. Energy 143, 846–853.
Edegbai, A.J., Schwark, L., Oboh-Ikuenobe, F.E., 2019. A review of the latest Cenomanian to Maastrichtian geological evolution of Nigeria and its stratigraphic and paleogeographic implications. J. African Earth Sci. 150, 823–837.
Eludoyin, O., Oduore, T., Obafemi, A., 2012. Spatio-Temporal Analysis of Shoreline Changes in Bonny Island, Nigeria. Ethiop. J. Environ. Stud. Manag. 5.
Elum, Z.A., Mopipi, K., Henri-Ukoha, A., 2016. Oil exploitation and its socioeconomic effects on the Niger Delta region of Nigeria. Environ. Sci. Pollut. Res. 23, 12880–12889.
Espurt, N., Brusset, S., Baby, P., Henry, P., Vega, M., Calderon, Y., Ramirez, L., Saillard, M., 2018. Deciphering the Late Cretaceous-Cenozoic Structural Evolution of the North Peruvian Forearc System. Tectonics 37, 251–282.
Hassan, H.M., Castillo, A.B., Yigiterhan, O., Elobaid, E.A., Al-Obaidly, A., Al-Ansari, E., Obbard, J.P., 2018. Baseline concentrations and distributions of Polycyclic Aromatic Hydrocarbons in surface sediments from the Qatar marine environment. Mar. Pollut. Bull. 126, 58–62.
Logeshwaran, P., Megharaj, M., Chadalavada, S., Bowman, M., Naidu, R., 2018. Petroleum hydrocarbons (PH) in groundwater aquifers: An overview of environmental fate, toxicity, microbial degradation and risk-based remediation approaches. Environ. Technol. Innov. 10, 175–193.
Ohwoghere-Asuma, O., Chinyem, L.F., Essi, O.E., 2017. Saltwater Intrusion Appraisal of Shallow Aquifer in Burutu Area of the Western Niger Delta with 2D Electrical Resistivity Tomography. J. Appl. Sci. Environ. Manag. 21, 372.
Ohwoghere-Asuma, O., Essi, O.E., 2017. Investigation of Seawater Intrusion into Coastal Groundwater Aquifers of Escravos, Western Niger Delta, Nigeria. J. Appl. Sci. Environ. Manag. 21, 362.