Zhang, Ji, Xue Zhang, Yuanzhong Wang, Guizhou Liu, Yanli Zhao, Chuantao Cai, and Hang Jin. “Determination of Trace Elements in Coptis Teeta and Soil by ICP-AES”. Asian Journal of Chemistry 23, no. 9 (June 10, 2011): 4225–4226. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/10824.