National energy consumption structures modulate PAH source apportionment in Ethiopian soils

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 16, 2024

Polycyclic aromatic hydrocarbons (PAHs), a ubiquitous substance in the environment, are closely associated with human energy consumption, which can be released to environment from incomplete biomass combustion or emitted petroleum. There is currently knowledge gap on relationships between consumption structures (ECSs) and PAH contamination, especially African countries. This study investigated distribution, sources, risks of 16 prioritized compounds (Σ₁₆PAHs) Ethiopia, explored impact ECSs contamination. The concentrations Σ₁₆PAHs ranged 12.51 435.67 ng/g, descending across an urban-rural gradient. Based diagnostic ratios positive matrix factorization (PMF) model, vehicle emissions were most important sources. By comparing countries, it was found that differences shaped diverse patterns sources PAHs Africa. results incremental lifetime cancer risk assessment suggested posed low children, adolescents, adults at some sampling sites. Ethiopian government has been making continuous efforts develop cleaner optimize decrease soil reduce potential risks. will provide support for Ethiopia improve structure management.

Language: Английский

Polycyclic aromatic hydrocarbons in Ethiopian soils: Distribution, sources, and implication from energy consumption structures

Emerging contaminants, Journal Year: 2024, Volume and Issue: unknown, P. 100461 - 100461

Published: Dec. 1, 2024

Language: Английский