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FIRST PUBLICATION, JUNE 2013. The Bioscientist. Vol. 1

The Bioscientist. Vol. 1(1):99-105, May, 2013
Available online at http://www.bioscientistjournal.com
Fatoba et al., 2013 Page 99

Heavy Metal Depositions around some Petroleum Product Depots in Nigeria,
using Mosses as Biomonitors

* Fatoba, P.O., Ogunkunle, C.O*., Oyedeji, S. and Salawudeen, M.B
Department of Plant Biology, University of Ilorin, Ilorin, Nigeria
*Corresponding author: ogunkunle.co@unilorin.edu.ng; +2348062176518



This study was aimed at assessing atmospheric depositions of heavy metals around Nigerian NNPC
depots using the moss (Barbula lambarenensis). Concentrations of 7 elements (Cd, Pb, Ni, Cu, Cr, Fe and
Zn) were determined in the moss samples by Flame Atomic Absorption Spectrophotometry analysis.
Nickel concentrations in the moss samples across the depots, except Mosimi NNPC depot were highest
(p<0.05). A comparison of the metal depositions among the depots revealed that elemental contents of
the mosses were significantly the same (p<0.01) in all the depots except for Cd and Cu in Ibadan and
Mosimi NNPC depots respectively. This could be attributed to fact that Ibadan depot is situated close to
residential areas with major input of Cd from domestic wastes incineration while Mosimi depot serves
several other depots around it, so vehicular activities was greater and also the release of Cu. Generally,
the pollution level of these depots is high and this calls for their proper monitoring to reduce workers
exposure to heavy metal hazards.

Key words: Heavy metals, atmospheric deposition, biomonitor, pollution, monitoring.

© 2013. Journal of Faculty of Biosciences, Nnamdi Azikiwe University,

P. M. B. 5025 Awka, Nigeria.

email: thebioscientist@unizik.edu.ng



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