Bioaccumulation of Polycyclic Aromatic Hydrocarbons in Tissues (Gills and Muscles) of (Catfish) Chrysichthys nigrodidatatus from Crude Oil Polluted Water of Ogoniland, River State, Nigeria
G. S. Ikue *
Department of Biochemistry, Faculty of Sciences, University of Port Harcourt, P.O.BOX 5323 Choba, Rivers State, Nigeria
M. O. Monanu
Department of Biochemistry, Faculty of Sciences, University of Port Harcourt, P.O.BOX 5323 Choba, Rivers State, Nigeria
C. L. Onuah
Department of Biochemistry, Faculty of Sciences, University of Port Harcourt, P.O.BOX 5323 Choba, Rivers State, Nigeria
*Author to whom correspondence should be addressed.
Abstract
The present study of PAHs concentration in gills and muscle of (Chrysichthys nigrodidatatus) collected from Ogoni-land, Rivers State, Nigeria was determined. Total of 17 PAH was analyzed. 13 of these PAH were found in the gills and 12 in the muscle of catfish from Kaa, also 15 were found in gills and 13 in the muscle from Bodo-city. Fishes were collected at different point and were analyzed for PAH using gas chromatography with flame ionization detector (GC/FID). Out of the two organs analyzed, the gills showed a highest level of PAH (179 μg/kg) in Bodo-city followed by (4.125 μg/kg) in gills of Chrysichthys nigrodidatatus from Kaa.
The benzo[a]pyrene marker for the occurrence and effect of carcinogenic in foods exceeded the EU recommended limit of 2 μg/kg in the muscle of Chrysichthy nigrodidatatus from Kaa and Bodo-city respectively. PAH concentrations in tissues decreased in the order gills>muscle. Thus, these organs have the ability to accumulate PAHs at different concentration.
Keywords: Chrysichthys nigrodidatatus carcinogenic, Ogoni-Land, PAHs, tissues