Organochlorine Pesticide Residuals in Mud Fish Samples (Neoxhanna Galaxiidae) from Onyedega River, Kogi State North Central, Nigeria
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- Organochlorine Pesticide, Residues, Onyedega River, Continuous Monitoring, Mud Fish
- Onojah, P. K.; Odin, E. M.; Daluba, N.E.
- This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. CC BY-NC-SA 4.0 Creative Commons License: https://creativecommons.org/licenses/by-nc-sa/4.0/
- The levels of organochlorine (gamma – BCH, Alpha – BCH, aldrin, O, P DDE, endosulfan, dieldrin, P,P = DDT, lindane, P, P = DDD, O, P = DDD and methoxychlor) pesticide residues in Onyedega River from Ibaji Local Government Area, Kogi State, Nigeria was investigated using fish samples as a case study. The fish specy, mud fish (Neoxhama Galaxiidae) of uniform size were collected in order to avoid possible errors due to size differences. The fish samples were labeled with a unique identification number. Samples of fishes were stored in a refrigerator the same day pending extraction and analysis. The fish samples were later dissected to remove the fish. The extractions, clean up and de-fattening of the fish muscle were carried out using standard procedures. The levels of all pesticides residues were determined using GC equipped with electron capture detector (ECD). Twenty-two organochlorine pesticides were detected in all fish samples. The result showed that all the pesticide residues identified were below the maximum residual limits (MRLs) and dietary intake (ADI) (see table 1) suggesting that the fishes are safe for human consumption. Despite the positive risk assessment results obtained in this study, the potential health risks associated with fish consumption cannot be neglected, hence the need for continuous monitoring to ensure the long-term safety of consumers.
Full text: IJRAS_253_Final.pdf