Ye, Yanq-Qing, Xin-Zhou Yang, Xeu-Sen Li, Fu-Quan Yao, and Qiu-Fen Hu. 2012. “Study on Solid-Phase Extraction and Graphite Furnace Atomic Absorption Spectrometer (GF-AAS) for the Determination of Platinum, Palladium and Gold”. Asian Journal of Chemistry 24 (11):4967-70. https://asianpubs.org/index.php/ajchem/article/view/9807.