Levels, distribution, origins, and human health risk evaluation of polycyclic aromatic hydrocarbons in groundwater around a petroleum depot wastewater discharge point

Environmental Chemistry and Ecotoxicology, Год журнала: 2024, Номер 6, С. 303 - 314

Опубликована: Янв. 1, 2024

This study is an attempt to assess the influence of oil storage depot discharges on proximate water sources in Ibadan, southwest Nigeria. Fifteen priority polycyclic aromatic hydrocarbons (PAHs) were examined a total 15 samples (10 groundwater +4 surface samples) utilizing gas chromatography–mass spectrometry, after extraction waters with dichloromethane and clean-up extracts. Results revealed that values overall PAHs (GW) (SW) varied from 0.01 3.45 mg/L (mean = 0.42 mg/L) 0.09 0.05 mg/L), correspondingly. The highest value ∑15 (3.45 was observed at 24 m discharge point. ring wise distribution pattern collected follows order: 2–3 rings >5–6 >4 – low molecular weight (LMW) accounted for 90.73% relative HMW (9.27%) samples. diagnostic ratios suggested pollution likely incomplete combustion fossil fuels, vehicle emissions released petroleum effluents nearby depot. concentration carcinogenic GW SW ranged 1×10−2to 9×10−2 7×10−2 mg/L, correspondingly, which highlights possible human health risks. hazard index (HI) studied via oral ingestion dermal exposure pathways are less than unity, suggesting no adverse non-carcinogenic effects. calculated incremental lifetime cancer risk (ILCR) adults children 10−2–10−3 range, implying noteworthy effects beings, being most susceptible. Correspondingly, dibenzo [a, h] anthracence (DahA) Benzo [a] pyrene (BaP) established be greater threats taken location. advocates complete discontinuance release into neighboring environment.

Язык: Английский

Evaluating the reliability of geophysical methods for investigating the migration of a hydrocarbon plume: validation by sample analysis

Environmental Pollution, Год журнала: 2025, Номер 372, С. 126032 - 126032

Опубликована: Март 11, 2025

Язык: Английский