Spectrometric Determination of Sodium, Potassium, Calcium, Magnesium, Phosphorus and Sulfur in Soy Biodiesel. Research, Society and Development, [S. l.], v. 11, n. 10, p. e192111032495, 2022. DOI: 10.33448/rsd-v11i10.32495. Disponível em: https://rsdjournal.org/rsd/article/view/32495. Acesso em: 6 dec. 2025.