Hameed, S. M., Al-Kubaisy, R. K., & Hussain, K. I. (2016). Liquid Ion Exchange Method for Extraction of Pb (II) as Anion by Using 15C5 Coupled with Spectrophotometric Determination in Different Samples. Journal of Kufa for Chemical Sciences, 10. https://journal.uokufa.edu.iq/index.php/jkcs/article/view/3400