Polycyclic aromatic hydrocarbon concentrations in soil of three communities in Rivers State
|
Full Text |
Pdf
|
|
Author |
Daniel A. O., Ekpete O. A. and Nwineewi D. J.
|
|
e-ISSN |
1819-6608 |
|
On Pages
|
1654-1662
|
|
Volume No. |
18
|
|
Issue No. |
14
|
|
Issue Date |
September 30, 2023
|
|
DOI |
https://doi.org/10.59018/0723206
|
|
Keywords |
polycyclic aromatic hydrocarbons, vertical depths of soil samples, seasonal variations, incomplete combustions.
|
Abstract
The study was conducted in three communities in Rivers State. These communities include Okochiri community
in Okrika, Mgbuodohia in Obio-Akpor and Chokocho in Etche. Soil at two different depths were sampled on a composite
basis using EGASPIN 2018 procedures, extracted and analyzed for sixteen priority PAHs using US EPA 8270 (2014)
procedures. Studies show the total concentration of PAHs in soil sample taken from Okochiri community in Okrika at
depths of 0 - 15 cm and 15 - 30 cm was found to be 145.32 mg/kg and 101.6 mg/kg during the dry season respectively but
in the wet season the total concentration was found to be 607.08 mg/kg and 242.46 mg/kg at the two depths. In
Mgbuodohia, the dry season result for the two depths, showed a total concentration of 14.68 mg/kg and 27.33 mg/kg and,
16.12 mg/kg and 14.94 mg/kg in the wet season. In Chokocho, the result showed a total concentration of 4.33 mg/kg and
252 mg/kg in the dry season and 23.87 mg/kg and 10.23 mg/kg in the wet season. Result showed a higher concentration of
PAHs in the tops soil (0- 15 cm) compared to the subsoil at the depth (15 - 30 cm). The total PAHs concentration was
consistently higher in the wet season than in the dry season. The concentration of PAHs was found to be majorly higher in
the topsoil than the subsoil both in the dry and wet season. Diagnostic ratios reveal major source to be petrogenic. The
concern for the environment and humans should prompt important stakeholders to take measures that will lead to mitigate
the impact of these toxic chemical.
Back