Ions and Metals in Polystyrene Samples by X-Ray Fluorescence Technique. Brazilian Journal of Radiation Sciences, Rio de Janeiro, Brazil, v. 12, n. 4B (Suppl.), p. e2605, 2025. DOI: 10.15392/2319-0612.2024.2605. Disponível em: https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/2605. Acesso em: 2 may. 2025.