Application of WDXRF and EDXRF Spectrometry for Chemical Characterization in Oil Sludge using the Fundamental Parameter Algorithm. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 12, n. 4A (Suppl.), p. e2623, 2025. DOI: 10.15392/2319-0612.2024.2623. Disponível em: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/2623. Acesso em: 14 jun. 2025.