Hajar , N. ., F. . . Alaeddin, and Z. . . Ghosoun. “Choose the Optimum Conditions for the Simultaneous Adsorption of the Lead and Cadmium Ions Orange Pell As a Adsorption Surface”. Tishreen University Journal -Basic Sciences Series, vol. 39, no. 6, Oct. 2018, https://journal.tishreen.edu.sy/index.php/bassnc/article/view/4024.