Song, Tianli, Xuyao Cao, Huanbo Wang, Yang Qiu, Yang Chen, Mi Tian, Jianyan Yu, Chongzhi Zhai, and Fumo Yang. “Characterization of Water-Soluble Ions in PM2.5 in Chongqing, a Megacity in Eastern Sichuan Basin, China”. Journal of Environmental Science and Engineering Technology 8 (June 6, 2020): 10–21. Accessed March 15, 2025. https://savvysciencepublishers.com/index.php/jeset/article/view/382.