VERMA, A.K.; GUPTA, V.K. Spectrophotometric Determination of Cyanide and Hydrogen Cyanide Using p-Amino benzoic Acid as a New Reagent and Its Application in Steel Industries . Asian Journal of Chemistry, [S. l.], v. 8, n. 4, p. 613–617, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/24160. Acesso em: 5 nov. 2024.