Health Risk Assessment of Heavy Metals in Clarias Gariepinus (Burchell, 1822) from Fish Mongers within Akure Metropolis, Ondo State, Nigeria
The concentration of heavy metal (Cd, Pb, Fe, Zn, Cu) in Clarias gariepinus collected from the fish market; Fanibi (Station I) and Fiwasaye (Station II) in Akure metropolis, Ondo state, Nigeria was investigated to ascertain the safety of the consumers. Sixty samples were collected from the two markets in three batches (I, II, III) for the period of six months and analyzed for heavy metals in the gills and muscles of the fish. Also, Health Risk Index (HRI) was used to determine the health risk of these metals to the consumers. The result showed that the investigated metal concentration was higher in station I than station II except Pb having higher concentration in stations II than I. In both stations, the highest concentration of Fe was recorded in the gills (12.60±1.51; 6.94±1.38) and muscles (3.72±0.09; 3.86±0.33) of samples in batch I. Also, the Health Risk Index (HRI) revealed that consumption of Clarias gariepinus from these study areas did not pose any health risk (HRI < 1). In addition, concentrations of the heavy metals were all below the permissible limits recommended by FAO/WHO.