Abstract
Six years after oil spill occur in Qua Ibeo river, environmental monitoring was set out to investigate residual petroleum compounds (PHCs) that are bio-accumulated by fish. Bio-concentration of residual Polycyclic Aromatic Hydrocarbons (PAHs) in fish tissues was determined in six fresh fish species. Twelve water samples were collected from Qua Ibeo river 1 KM apart. The screening was conducted using Agilent gas chromatography tandem mass spectroscopy. Results revealed 17 PAHs accumulated at variable concentrations. Bio-concentration factor and free PAHs in water was calculated by finding the ratio of PAHs concentration in fish tissue to water free PAHs concentration. The contaminant body load was extrapolated by summation of individual PAHs concentration. Results shows African Red snipper (Lutjanus agennes) 20.822±0.6132 with body load as the highest, Yellow tail (Seriola lalandi) 13.111±1.247, Atlantic Crocker (Micropogonias undulates) 9.8439±6.569, Tilpia (Oreochromis niloticus) 9.7790±12.305, Cat Fish (Clarias gariepinus) 7.298±4.529 and Barracuda (Sphyraena barracuda) 6.853±7.937 respectively. The percentage PAHs concentration in samples was also determined, for instance, African red snapper have 10.9% Indeno (1,2,3,cd) pyrene, Yellow tail 10.94% Benzo (a) pyrene, Barracuda 10.05% Indeno (1,2,3,cd) pyrene, Atlantic Croker 13.03% Indeno (1,2,3,cd) pyrene, Catfish 9.61% Indeno (1,2,3,cd) pyrene and Tilapia (Oreochromis niloticus) 11.84% Indeno (1,2,3,cd) pyrene respectively.
Highlights
Many names have been used to link patients syndromes associated with sensitivity to pollutants
Considering the concentration of Polycyclic Aromatic Hydrocarbons (PAHs) in environmental media, controlling the bioavailability of PAHs interval which the organism enduring the contaminant and the physiology of the organism to contest with PAHs Body Load, are all tune of aquatic pollution and degeneration
Bio-concentration patterns of PAHs in marine organisms are diverse in many factors
Summary
Many names have been used to link patients syndromes associated with sensitivity to pollutants. The difficulty in achieving scientific investigations that will agree with definition of such situation has not received a breakthrough (Rose et al, 2012). Contaminants body burden is organism’s overall contaminant concentration, usually from air, food and water or surroundings (NRC, 1992). The organism must match with this burden. There are usually expelled or put into restrictive section. The knowledge is derived from previous research works on environmental risk limits of petroleum aromatic hydrocarbons. The risk limits are calculated by concentration of substances in the organisms when they
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