Journal: Environmental Contaminants Reviews (ECR)
Author: Thompson Faraday Ediagbonya, Oladejo Issac Olaniyan, Abimbola Oluwatayo Orisawayi, Osaro Iyekowa, Olawale Abdulmojeed Idris

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi:10.26480/ecr.01.2025.36.43

ABSTRACT

209 PCB congeners, only a tiny portion have been studied. All of the PCB congeners examined in this work have not been studied, with the exception of PCB-206. Using gas chromatography-mass spectrometry (GC￾MS) methods, this study offers a comprehensive evaluation of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in ground water (well and borehole). The ranges of PAHs and PCBs in the water from the well and borehole were 0.93 to 4.46 and 0.13 to 5.74 mg/l, respectively, and 0.02 to 2.29 and 0.00 to 3.05 mg/l, respectively. The analysis revealed that the region’s total PAH content above the World Health Organization’s (WHO) maximum permissible limit of 10 μg/L, and that the groundwater was contaminated with light PAHs. The samples’ PCB congener distribution patterns were as follows: di-PCBs > Penta-PCBs > Hepta-PCBs > Tri-PCBs > Hexa-PCBs. The 22 PAHs, boreholes contained the middle and lower ring PAHs more frequently than wells. Adult and child hazard indices (HI) in the borehole were 1.345 and 3.969, respectively, whereas in the well, the were 2.270 and 0.770.

KEYWORDS
Underground water, PAH, PCB, Osogbo, risk assessment