Lei, X., Wei, X., Gong, Q., Wei, Q., & Wang, L. (2012). Determination of Trace Potassium in Concentration Salt Solution by Anti-Fluorescence Quenching Method on Rhodamine B-Sodium Tetraphenylborate System. Asian Journal of Chemistry, 25(3), 1285–1289. https://doi.org/10.14233/ajchem.2013.12902