Volume 4, Issue 1

HEAVY METALS CONTAMINATION AND HUMAN HEALTH RISK FROM SELECTED FISH IN LAGOS, NIGERIA.

Nnodum Chima Fausta1, Yusuf Kafeelah Abosede2, and Adeniji Comfort Adetutu3
1Lagos State University Ojo, Lagos, Nigeria., Nigeria, 2Lagos State University Ojo, Lagos, Nigeria., Nigeria, and 3Lagos State University Ojo, Lagos ,nigeria, Nigeria
DOI:10.36108/jrrslasu/7102/40(0123)

Abstract


Abstract: Introduction : Heavy metals are known to cause deleterious effects on human health through food chain. Aims: The study is aimed at assessing heavy metal concentrations in the tissues of four highly consumed fish species and to evaluate the potential health risks associated with their consumption. Materials and Methods: The concentrations of Cu, Cd and Pb were analyzed in the tissues of Titus (Scomber Japonicus), Croaker (Pseudolithus Elongatus), Scumbia (Ilisha Africana) and Shrimps (Pipeus Notialis) by atomic absorption spectrophotometry (AAS) after digestion of the samples. Results: The results showed that Cd was not detected in the tissues of all fish species. There were variations among Cu and Pb concentrations in the tissues of the fish species. Cu had the highest concentrations (1.00 µg/g) in the tissues of croaker and shrimps respectively while Pb had the lowest concentrations (0.25 µg/g) in the tissues of Scumbia . The levels of all metals in the present study were lower than the limits permitted by Food and Agriculture Organization of the United Nations/World Health Organization (FAO/WHO), European Community Regulation (EU) and European Commission (EC). Assessment of noncarcinogenic health hazard using Target hazard quotient (THQ) and hazard index (HI) indicated no concern from consumption of these fish species. The estimated daily intake (EDI) of the studied metals through fish consumption was below the permissible tolerable daily intake. Conclusion: It can be concluded that there is no potential human health risk from consumption of the selected fish species. Keywords: Heavy metals, Hazard index, Target hazard quotient.


Keywords: Keywords : Heavy metals; , ; Health hazard, and ; Noncarcinogenic risk.

Download PDF