TY - JOUR
T1 - Bayesian source apportionment and eco-probabilistic risk assessment of aliphatic and polycyclic aromatic hydrocarbons in sediments from the offshore area between the Deep Water Tano and West Cape three points blocks, Ghana
AU - Asare, Ebenezer Aquisman
AU - Abdul-Wahab, Dickson
AU - Asamoah, Anita
AU - Dampare, Samuel Boakye
AU - Kaufmann, Elsie Effah
AU - Wahi, Rafeah
AU - Ngaini, Zainab
AU - Klutse, Charles Kofi
AU - Bempah, Crentsil Kofi
AU - Fianko, Joseph Richmond
AU - Gyasi, Gabriel Akwasi
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2025/2
Y1 - 2025/2
N2 - This study investigates aliphatic and polycyclic aromatic hydrocarbons in sediments from offshore Ghana, focusing on their distribution, sources, and ecological risk. Samples were collected from 15 sites near Deep Water Tano and West Cape Three Points blocks. GC-FID and GC–MS analyses revealed higher concentrations in West Cape Three Points compared to Deep Water Tano. Bayesian source apportionment indicated microorganisms as the primary contributor to AHs in both areas. For polycyclic aromatic hydrocarbons, pyrogenic sources dominated in Deep Water Tano (63.3 %), while grass/coal/wood combustion was primary in West Cape Three Points (60 %). Probabilistic risk assessment identified benzo[a]pyrene as posing the highest ecological risk. This study demonstrates the utility of Bayesian methods in identifying hydrocarbon sources and highlights the importance of species-specific sensitivities in ecological risk assessments, providing valuable insights for marine environment management.
AB - This study investigates aliphatic and polycyclic aromatic hydrocarbons in sediments from offshore Ghana, focusing on their distribution, sources, and ecological risk. Samples were collected from 15 sites near Deep Water Tano and West Cape Three Points blocks. GC-FID and GC–MS analyses revealed higher concentrations in West Cape Three Points compared to Deep Water Tano. Bayesian source apportionment indicated microorganisms as the primary contributor to AHs in both areas. For polycyclic aromatic hydrocarbons, pyrogenic sources dominated in Deep Water Tano (63.3 %), while grass/coal/wood combustion was primary in West Cape Three Points (60 %). Probabilistic risk assessment identified benzo[a]pyrene as posing the highest ecological risk. This study demonstrates the utility of Bayesian methods in identifying hydrocarbon sources and highlights the importance of species-specific sensitivities in ecological risk assessments, providing valuable insights for marine environment management.
KW - Benzo[a]pyrene
KW - No-observed-effect concentrations
KW - Petrogenic sources
KW - Pyrogenic source
UR - http://www.scopus.com/inward/record.url?scp=85212831135&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2024.117487
DO - 10.1016/j.marpolbul.2024.117487
M3 - Article
AN - SCOPUS:85212831135
SN - 0025-326X
VL - 211
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
M1 - 117487
ER -