Removal of Parathion from Aqueous Media Throughp-tert-Butylcalix[4]arene Based Modified Silica. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 14, n. 2, p. 28–37, 2013. DOI: 10.21743/. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/352. Acesso em: 5 nov. 2025.