Fingerprints of Total Petroleum Hydrocarbons in the Water and Sediments of Onyima Creek (Ede Onyima), Engenni Ahoada West, Rivers State, Nigeria
diagnostic indices, onyima creek, molecular markers, monthly variation, sediments, surface water, total petroleum hydrocarbons
Water and sediment samples were collected from Onyima Creek (Ede Onyima) for eight months at intervals of two months to analyze the level of distribution and possible sources of total petroleum hydrocarbons contamination. Petroleum hydrocarbons components were determined by Gas Chromatography-Flame Ionization Detector (GC-FID) and then quantified after necessary extraction procedures and, laboratory pretreatment have been performed. The petroleum hydrocarbons chain length recorded ranged from C8-C40 in both water and sediment columns. The total petroleum hydrocarbons recorded in the water column of the creek ranged from 10.485-24.762mg/L, while in the sediments, recorded value ranged from25.460-69.357mg/Kg. The source identification ratios and indices used include C31/C19, CPI, ACL, C15-C19 odd hydrocarbons, C18-C22 even hydrocarbons, LHC/SHC, and, L/H showed that the origin of total petroleum hydrocarbons contamination in the creek was from natural and anthropogenic sources. There is, therefore, the need for control and regulation of activities that contributed to the presence of total petroleum hydrocarbons in the creek to safeguard human health and aquatic plants and animals that dwell in the Onyima Creek (Ede Onyima) space.
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