SOURCE DETERMINATION AND CONCENTRATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN SOIL AROUND SELECTED

This study used Gas Chromatography/Flame Ionization Detector (GC/FID) to determine the content and sources of poly aromatic hydrocarbons (PAHs) in asphalt contaminated soils from three asphalt companies in Port Harcourt, namely AUC, H & H, and JAFAC. AUC Asphalt had a total PAH concentration of 160.740.84 mg/kg, H & H Asphalt had a total of 684.5206.0 mg/kg, and JAFAC Asphalt had a total of 105.026.02 mg/kg, with an overall mean of 316.790.95 mg/kg. These results were significantly over WHO and other international agencies' recommended limits, posing a serious health risk. Finally, for AUC, H & H, and JADAC, the diagnostic ratio of LMWP/HMWP was 0.007, 0.9, and 0.1, respectively, while the ring ratio was Ant/(Ant+Phe) with a value of 0.2 for AUC and 0.4 for JAFAC. AUC's Flu/(Flu+Pyr) values were 0.005, 0.8 for H & H, and 1 for JAFAC, respectively, while BaA/(BaA+Chr) values were 1 for AUC, 0.9 for H & H, and 0.3 for JAFAC. The PAHs were shown to be both petrogenic and pyrogenic, according to the studies.

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