OZEKEKE OGBEIDE; GRACE OGBEIDE. Integrated geochemical and multivariate assessment of heavy metal contamination and ecological risk in Ikpoba and Ogba Rivers Benin city Edo State, Nigeria. JOURNAL OF BASICS AND APPLIED SCIENCES RESEARCH, [S. l.], v. 4, n. 2, p. 118–137, 2026. DOI: 10.4314/jobasr.v4i2.13. Disponível em: https://jobasrfudutsinma.com/index.php/ojs-files/article/view/238. Acesso em: 7 apr. 2026.