Green  Synthesis of  Silver Nanoparticles(AgNPs) using Calotropis procera Leaves Extract and it Adsorption Properties for the Removal of Cr3+ from Petroleum Waste Water. Communication In Physical Sciences, [S. l.], v. 10, n. 3, p. 214–223, 2024. Disponível em: https://journalcps.com/index.php/volumes/article/view/186. Acesso em: 1 sep. 2026.