OKORO JOEL EJIOFOR; IYI EMMANUEL CHIBUIKE; EZEUGWU INNOCENT ONYEBUCHI. ENVIRONMENTAL ASSESSMENT OF HEAVY METAL CONTAMINATION AND ECOLOGICAL RISK IN SOILS AROUND PETROL STATIONS IN ONITSHA, SOUTHEASTERN NIGERIA. International Journal of Earth & Environmental Sciences (IJEES), [S. l.], v. 11, n. 1, p. 94–133, 2026. DOI: 10.58885/ijees.v11i1.94.oje. Disponível em: https://www.ijees.ielas.org/index.php/ijees/article/view/104. Acesso em: 13 sep. 2026.