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Octanol/water partition coefficient and bioaccumulation index of Bonny light crude oil, having a fractional percentage composition of 81.11 saturate, 7.20 aromatics, 2.48 ashphaltene and 9.21 residues, were studied in microcosm aquaria using a fresh water catfish Clarias agboyiensis. The partition coefficient (K ow ) of the crude oil was evaluated to be 0.74. The mean bioaccumulation values of the petroleum hydrocarbons (PHCs) in the homogenates of the whole fish, liver and kidney at intervals of 24, 72 and 120 hours were respectively 0.845 ± 0.118, 11.0 ± 0.058 and 15.0 ± 0.064 after exposing the whole fish to sediment and water, respectively containing 31 µg/g and 190 µg/l of the crude oil in the aquarium. The mean bioaccumulation values of petroleum hydrocarbons (PHCs) in the tissue homogenates of the exposed fish were higher than in the control (p<0.05), thus suggesting that Bonny light crude oil with K ow of 0.74 could be lipophilic.

Octanol/Water Partition Coefficient And Bioaccumulation Index Of Bonny Light Crude Oil In Cat Fish Clarias Agboyiensis In Laboratory-Dosed Sediments