1Ebiekpe, V. E., 2Okafor, P. C. 2Uwah, I. E. 1Ogwuda,
U. A. &1Agbaghare, D. E.
1Department of Pure and Applied Chemistry, Veritas University, Abuja
2Department of Pure and Applied Chemistry, University of Calabar,
Calabar
E-mail: ebivik@yahoo.com
ABSTRACT
Utilization of Talinum triangulare (water-leaf) in accessing the level of some
heavy metals in selected farm sites around Veritas University, Abuja, Nigeria was investigated using Atomic Absorption
Spectrophotometer (AAS). The results obtained indicated the following ranges
for the metal in the farm sites soil (in mg/kg): Farm site A: Cu(0.12),
Fe(0.1), Zn(2.62), Ni(0.18), Pb(0.01), Cd(0.001) and Cr(0.001); Farm site B:
Cu(0.26), Fe(0.18), Zn(1.51), Ni(1.06), Pb(0.02), Cd(0.003) and Cr(0.002); Farm
site C: Cu(0.03), Fe(0.13), Zn(1.84), Ni(0.51), Pb(0.06), Cd(0.006) and
Cr(0.002); Farm site D: Cu(0.06), Fe(0.11), Zn(1.22), Ni(0.16), Pb(0.05),
Cd(0.002) and Cr(0.002); Farm site E: Cu(1.02), Fe(0.21), Zn(2.21), Ni(0.22),
Pb(0.05), Cd(0.002) and Cr(0.003). The concentrations of
the metals analyzed in the different farm sites were greater than those
obtained in the control sample, but however, the obtained values were all
within the NAFDAC/WHO permissible limits. The effects and environmental health implications of these heavy metals on humans are also
discussed.
Keywords: Talinum triangulare, Heavy metals, Permissible limit, Farm sites, Environmental health