Jawad, S. K., & AL-Ghurabi, F. A. W. (2017). Liquid- Liquid extraction method for extraction Zn(II) and Cd(II) from aqueous solutions by two synthesized azo organic reagent. Al-Qadisiyah Journal of Pure Science, 18(3), 102-113. Retrieved from https://journalsc.qu.edu.iq/index.php/JOPS/article/view/448