Li, Y., Yang, X.-Z., Li, X.-S., Yao, F.-Q., & Hu, Q.-F. (2011). Study on Solid Phase Extraction and Spectrophotometric Determination of Palladium with MCI GEL CHP 20Y as Sorbent. Asian Journal of Chemistry, 23(11), 4838–4840. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/10994