The level of persistent, bioaccumulative, and toxic (PBT) organic micropollutants contamination of Lagos soils
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Date
2013-01-28
Authors
Alani, Rose
Kehinde, Olayinka
Babajide, Alo
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Environmental Chemistry and Ecotoxicology
Abstract
Lagos is a highly urbanized coastal city, with several water channels linking the Lagos lagoon, a major
source of seafoods to the people of Lagos and its environs. Contamination of Lagos soil with persistent
bioaccumulative and toxic organic micropullutants (PBTs) would not only affect the non-target species
residing in the soil, but also a concern that the chemicals could find their way into the lagoon via soil
run-off and leaching. Soil samples were collected from three busy areas of Lagos and analyzed for
polychlorinated biphenyls (PCBs), organochlorine pesticides (OCS), and polycyclic aromatic
hydrocarbons (PAHs). Gas chromatography with mass selective detector (GC/MSD) was used for the
analyses. Iddo had the highest percent (%) organic carbon content of 39.39% with highest total PAHs of
2,706.93 ng/g. The highest total PCBs of 23.63 ng/g was found in Apapa. PCB 74 was the only PCB
found in all the soils and ranged between 3.55 and 23.64 ng/g at two locations in Apapa. PBTs found in
highest concentrations were naphthalene (1,625.10 ng/g) at Iddo, p,p’DDE (117.98 ng/g) at Okobaba, and
PCB 74 (23.63 ng/g) at Apapa 1. The levels of PBTs in Lagos soils are hereby presented.
Description
Keywords
Soil, (PBTs), (GC/MSD), organic carbon, Lagos
Citation
Rose, A., Kehinde, O., & Babajide, A. (2013). The level of persistent, bioaccumulative, and toxic (PBT) organic micropollutants contamination of Lagos soils. Journal of Environmental Chemistry and Ecotoxicology, 5(2), 26-38.