Center for Environment and Energy Research and Studies (CEERS)
Abstract
Total concentrations of Cd, Cr, Co, Fe, Pb, Ni, Mn and Zn were
determined by atomic absorption spectrophotometry in the surface
sediments of Taylor Creek, Southern Nigeria. The most concentrated
trace metals, ranging from 113.2 to 5160.7 mg/g-dry weights were Fe,
Pb, Mn, Ni and Zn. There was no significant variation in
sediment-associated metal levels (P>0.05). The Metal Pollution Index
(MPI) was highest at Agbia/Nedugo and is attributed to local
contamination of the Creek. The concentrations of low molecular weight
polycyclic aromatic hydrocarbons (PAHs) were also detected and
quantified in the sediments by capillary gas chromatography equipped
with a flame ionization detector. The concentration levels of
178.1-1266.3 mg/g-wet weights were high for the PAHs. The results
indicate that the pollutants, which are bio-accumulatable, could
contribute to inferior biodiversity, and shifts in community
composition from sensitive to tolerant taxa
