Polycyclic Aromatic Hydrocarbon (PAHs) Levels in Treated Spent Engine Oil Contaminated Soil from Automechanic Workshop Site in Wukari, Nigeria. Lafia Journal of Scientific and Industrial Research, [S. l.], v. 2, n. 1, p. 70–77, 2024. DOI: 10.62050/ljsir2024.v2n1.308. Disponível em: https://lafiascijournals.org.ng/index.php/ljsir/article/view/308. Acesso em: 17 مايو. 2026.