University Links: Home Page | Site Map
Covenant University Repository

Bioaccumulation of BTEX and PAHs in Heterotis niloticus (Actinopterygii) from the Epe Lagoon, Lagos, Nigeria

Akinsanya, Bamidele and Ayanda, Opeyemi Isaac and Onwuka, Benson and Saliu, Joseph Kayode (2020) Bioaccumulation of BTEX and PAHs in Heterotis niloticus (Actinopterygii) from the Epe Lagoon, Lagos, Nigeria. Heliyon, 6.

[img] PDF
Download (519kB)


Toxicity studies in the aquatic ecosystem have shown that petrol and its product have adverse effects on aquatic biota. They are able to easily absorb these toxic substances into their bodies from sediment, water or even food items that are contaminated, thus impacting the food chain. In this study, water, sediment and fish (Heterotis niloticus) from the Epe Lagoon were investigated for the presence of BTEX (benzene, toluene, ethylbenzene and the three xylene isomers m, o and p-xylenes), and PAHs using GC-MS. Total concentration of BTEX in sediment and water was respectively 32.37 � 1.07 μg/g, 49.86 � 7.30 μg/L; while total concentration of BTEX in fish liver and intestine was 33.75 � 10.09 and 40.16 � 9.64 μg/g respectively. Benzene, 1,2-Dichlorobenzene and 1,3- Dichlorobenzene components of BTEX were not detected in both sediment and water. Total concentration of PAH in sediment and water was 7.46 � 1.73 μg/g and 19.33 � 1.31 μg/L respectively. Total PAHs concentration in liver and fish intestine was 141.23 � 5.89 and 173.34 � 4.677 μg/g respectively. Majority of the PAHs congeners were found to be higher than the acceptable limits. Findings from this study shows the need for continuous monitoring of our natural waters as the present situation portends a potential concern for ecological risk.

Item Type: Article
Uncontrolled Keywords: Environmental science Environmental hazard Environmental management Environmental pollution Environmental risk assessment BTEX PAH Heterotis niloticus Sediment Lagoon
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Medicine, Health and Life Sciences > School of Biological Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 16 Jun 2021 10:00
Last Modified: 16 Jun 2021 10:00

Actions (login required)

View Item View Item