Authors :
Udie Linus Ugbong; Offiong Effanga Offiong; Etuk Marvelous Christopher; Anjorin Ayodele Ebenezer
Volume/Issue :
Volume 8 - 2023, Issue 1 - January
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3kBDD6T
DOI :
https://doi.org/10.5281/zenodo.7557972
Abstract :
Soil samples were collected from the dumpsite
soil located at Lemna Road, Calabar Municipality, Cross
River State, Nigeria to investigate the speciation and
bioavailability of some trace metals namely: iron,
cadmium, copper, zinc and lead. Extract from the soil
were obtained by sequential extraction. This involved
Acid extractable fraction, Oxidisable fraction, Reducible
fraction and Residual fraction. These fraction were then
analyzed for Pb, Cd, Cu, Fe and Zn using acetylene
flame atomic absorption spectrophometer. The results
obtained, showed that the metals occurred with the
following percentage bioavailability: Fe (33.57%), Zn
(43.59%), Cd (67.23%), Cu (82.98%) and Lead
(69.96%). Acid extractable 5.57% reducible fraction
accounted for over 9.33% of the total fractions, metal
bound to residual and oxidisable fraction accounted for
10.90% and 13.05% respectively. Fe has the highest
distribution in all the fractions followed by Zn while Cd
has the least in all the fractions. The results of these
findings indicates that the trace metals with exception of
Cd were readily bioavailable in the dumpsite soil
therefore, phytoremediation is advocated.
Soil samples were collected from the dumpsite
soil located at Lemna Road, Calabar Municipality, Cross
River State, Nigeria to investigate the speciation and
bioavailability of some trace metals namely: iron,
cadmium, copper, zinc and lead. Extract from the soil
were obtained by sequential extraction. This involved
Acid extractable fraction, Oxidisable fraction, Reducible
fraction and Residual fraction. These fraction were then
analyzed for Pb, Cd, Cu, Fe and Zn using acetylene
flame atomic absorption spectrophometer. The results
obtained, showed that the metals occurred with the
following percentage bioavailability: Fe (33.57%), Zn
(43.59%), Cd (67.23%), Cu (82.98%) and Lead
(69.96%). Acid extractable 5.57% reducible fraction
accounted for over 9.33% of the total fractions, metal
bound to residual and oxidisable fraction accounted for
10.90% and 13.05% respectively. Fe has the highest
distribution in all the fractions followed by Zn while Cd
has the least in all the fractions. The results of these
findings indicates that the trace metals with exception of
Cd were readily bioavailable in the dumpsite soil
therefore, phytoremediation is advocated.
