OLALEKAN O.O.; OGUNLAJA O. O. Comparative assessment of portable x-ray fluorescence and atomic absorption spectrophotometry for metal analysis in urban dumpsite soils of Ibadan, Nigeria. JOURNAL OF BASICS AND APPLIED SCIENCES RESEARCH, [S. l.], v. 4, n. 2, p. 200–206, 2026. DOI: 10.4314/jobasr.v4i2.20. Disponível em: https://jobasrfudutsinma.com/index.php/ojs-files/article/view/272. Acesso em: 7 apr. 2026.