Pesticides Residues in Smoked Fish Samples from North-Eastern Nigeria

Smoked fish species, Clarias sp., Gymnarchus niloticus and Tilapia sp., sampled from the open markets in North-Eastern Nigeria were investigated for the presence and concentration levels of pesticide residues of DDT, dichlorvos and lindane. The GC-MS and GC-FID techniques were employed in the determination of the pesticide residue. The obtained results showed positive identification of op-DDT (2.844-4.220 kg g super(-1)), pp-DDT (3.821-4.479 kg g super(-1)), dichlorvos (2.844-4.220 kg g super(-1)) and lindane (3.479-9.878 kg g super(-1)). Gymnarchus niloticus showed consistently higher pesticide residue levels in the studied smoked fish samples followed by Clarias sp. and then Tilapia sp.