Efficiency of Helianthus annuus L. Leaves in Purification Wastewater from Heavy Metals. Damascus University Journal of agriculture sciences, [S. l.], v. 39, n. 4, 2023. Disponível em: https://journal.damascusuniversity.edu.sy/index.php/agrj/article/view/4634. Acesso em: 18 jun. 2026.