Levels of Polycyclic Aromatic Hydrocarbons in Some Organs of Tilapia species from New Calabar River, Niger Delta, Nigeria
DOI:
https://doi.org/10.53555/nnpbs.v2i4.709Keywords:
PAHs, SPDC, Tilapia species, Tilapia organs, GC/MC, WHO Limit, New Calabar River, Niger DeltaAbstract
The issues of haphazard discharge of polycyclic aromatic hydrocarbons (PAHS) into aquatic environment and its adverse impact on aquatic lives have attracted wide attentions in recent times. This study therefore examined the concentrations of PAHs in some organs (muscle, gill and brain) of Tilapia species (T.guineensis and T.zilli), which are the dominant fish consumed and marketed in Bille community Niger Delta, Nigeria. Samples of the fish were collected from the effluent impacted and control areas. The samples were prepared and levels of PAHs in the organs analyzed using gas chromatography and mass spectrophotometry (GC/MC) analytical procedures. The total PAHs levels determined from the muscle, gill and brain of T. guineensis were 0.13, 0.022 and 0.005 mg/kg, respectively. The control value were muscle (0.0005mg/kg), gill (0.0008mg/kg) and brain (0.0009 mg/kg). Similarly, the organs of T. Zilli had total PAHs values of 0.021, 0.077 and 0.008 mg/kg for the muscle, gill and brain in that order, while the values from the control samples were 0.0006, 0.0006 and 0.0007 mg/kg representing the muscle, gill and brain, respectively. All the values were above WHO limit of 0.001mg/kg Naphthalene with the highest concentrations of 0.064 mg/kg in the gill, and also posed the greatest danger to aquatic lives and humans.
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