KEYVANFARD, M.; POURETEDAL, H.R. Catalytic Spectrophotometric Determination of Trace Amounts of Ag(I) using the Oxidation of 1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6- disulfonic Acid Trisodium Salt with Peroxodisulfate. Asian Journal of Chemistry, [S. l.], v. 19, n. 5, p. 3747–3754, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/13275. Acesso em: 23 jul. 2024.