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Research Article Open access CC BY 4.0

Human Health Risk Assessment of Polycyclic Aromatic Hydrocarbons in Water Samples around Eket Metropolis, Akwa Ibom State, Nigeria

Akanimo Dianabasi Akpan, Bassey Sam-Uket Okori, Daniel Chiejina Ekpechi

Asian Journal of Environment & Ecology · pp. 58–71 · Published 3 Dec 2022

10.9734/ajee/2022/v19i4419

Abstract

Aims: Polycyclic aromatic hydrocarbons (PAHs) are very toxic and persistent environmental contaminants. The paper is aimed at investigating the cancer risk exposure of PAHs in borehole water collected around five automobile repair workshops within Eket metropolis. Place and Duration of Study: Samples were collected between June - August (2018) in wet season and November (2018) – January (2019) in dry season from boreholes around the vicinity of five automobile repair workshops within Eket metropolis.  Methodology: The water samples were prepared in the laboratory following standard procedures and analysed for 16 United States Environmental Protection Agency (US EPA) priority PAHs using Gas Chromatography–Mass Spectrometer (GC–MS). A total of fifteen PAH congeners were detected in the samples. Results: Total PAHs concentrations in borehole water from all sampling sites were in the range of 1.71–16.07 mg/L and 1.07–12.97 mg/L for both dry and wet seasons respectively. The low PAHs levels recorded in water for the wet season was linked to dilution effect. Low molecular weight PAHs were more dominant in all samples. The estimated cancer risks of exposure to PAHs by ingestion in the water samples ranged from 7.10 × 10-7 to 1.12 × 10-4 and 6.76 × 10-6 to 3.69 × 10-1 for adults and children respectively in both seasons. The estimated cancer risks due to dermal exposure to PAHs in the water samples ranged from to 7.18 × 10-3 to 1.07 × 10-1 and 5.67 × 10-3 to 1.08 × 10-1 for adults and children respectively in both seasons.  Conclusion: Carcinogenic risks due to dermal exposure calculated for both adults and children were higher than the US EPA acceptable cancer risk and much higher for children, which suggest that children could be prone to cancer and need to be monitored.

Toxicity borehole water cancer risk ingestion dermal exposure

References (11)

  1. 1 Toxic equivalency factors (TEFs) for polycyclic aromatic hydrocarbons (PAHs) [DOI]
  2. 2 Polycyclic aromatic hydrocarbons. A review [DOI]
  3. 3 Polycyclic aromatic hydrocarbons in fruits and vegetables: Origin, analysis, and occurrence [DOI]
  4. 4 Polycyclic aromatic hydrocarbons in road-deposited sediments, water sediments, and soils in Sydney, Australia: Comparisons of concentration distribution, sources and potential toxicity [DOI]
  5. 5 Determination of Polycyclic Aromatic Hydrocarbons (PAHs) in Water and Sediments of the Kor River, Iran
  6. 6 Concentration of Polycyclic Aromatic Hydrocarbons and Estimated Human Health Risk of Water Samples Around Atlas Cove, Lagos, Nigeria [DOI]
  7. 7 Polycyclic aromatic hydrocarbons (PAHs) [DOI]
  8. 8 Concentration and Risk Evaluation of Polycyclic Aromatic Hydrocarbons in Urban Soil in the Typical Semi-Arid City of Xi’an in Northwest China [DOI]
  9. 9 Sedimentary record of polycyclic aromatic hydrocarbons in Lake Erhai, Southwest China [DOI]
  10. 10 Hazard assessment of polycyclic aromatic hydrocarbons in water and sediment in the vicinity of coalmines [DOI]
  11. 11 Determination of Polycyclic Aromatic Hydrocarbons in Soil and Water Around Automobile Repair Workshops within Eket Metropolis in Akwa Ibom State, Nigeria using GC-MS [DOI]

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