BOONMALAI, A.; JAKMUNEE, J.; KRITSUNANKUL, O. Simultaneous Determination of Methanol and Ethanol Residues in Biodiesel by a Simple Headspace Single-Drop Microextraction and Gas Chromatography with Flame Ionization Detection. Asian Health, Science and Technology Reports, [S. l.], v. 23, n. 3, p. 109–119, 2016. Disponível em: https://ph03.tci-thaijo.org/index.php/ahstr/article/view/1934. Acesso em: 10 dec. 2025.