NAGPURKAR, L.P.; JACHAK, M.M.; EKHE, J.D. Quantitative Sulphur Estimation: Fast Method Using Microwave Irradiation . Asian Journal of Chemistry, [S. l.], v. 14, n. 3, p. 1646–1650, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/22454. Acesso em: 23 jul. 2024.