Li, Yang, Xin-Zhou Yang, Xeu-Sen Li, Fu-Quan Yao, and Qiu-Fen Hu. “Study on Solid Phase Extraction and Spectrophotometric Determination of Palladium With MCI GEL CHP 20Y As Sorbent”. Asian Journal of Chemistry 23, no. 11 (September 7, 2011): 4838–4840. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/10994.