Lead and Cadmium Concentrations in two Widely Consumed Fish Species in Ibadan, Southwestern Nigeria ...

• Main Authors: Funmilayo J. Okparaocha, Peter O. Oyeleke, Omolara J. Ojezele, Adijat Y. Shorinmade, Fatimah F. Folarin, Ofunami J. Obero
• Format: Article in Journal/Newspaper
• Language: English
• Published: Zenodo 2021
• Subjects: Cadmium, lead, bio-accumulate, health risk assessment, Gadus morhua, Clupea harengus; Gadus morhua
• Online Access: https://dx.doi.org/10.5281/zenodo.11891024; https://zenodo.org/doi/10.5281/zenodo.11891024

Abstract Lead (Pb) and Cadmium (Cd) are among toxic heavy metals with no known biological function and have the ability to bio-accumulate in human body system even at low concentrations when ingested. This present study is aimed at assessing the concentrations of Cd and Pb in the tissues of fresh and smoked fishes of Clupea harengus (Herring fish) and Gadus morhua (Cod fish) collected from food vendors in selected local government areas in Ibadan, Oyo state. The tissues were digested using standard procedure and analysed with Atomic Absorption Spectroscopy (AAS). The result revealed the mean concentration of Cd in the tissue of Gadus morhua (Cod fish) was 91% higher than that of Pb. The mean concentrations of Pb and Cd in the Cod fish sample was observed to be lower in the smoked sample (0.02 mg/kg and 0.42 mg/kg) than in the fresh sample (0.04 mg/kg and 0.49 mg/kg). Higher level of Pb (33.3%) and Cd (46.5%) were observed in the Cod fish than Herring fish. All the fish samples showed concentrations lower ...