Moghimi, A., & Javad Poursharifi, M. (2011). Perconcentration of Trace Cr(III) using Octadecyl Silica Membrane Modified N,N-Disalicylideneethylenediamine. Asian Journal of Chemistry, 23(9), 3870–3874. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/10746