Presence and sources of per- and polyfluoroalkyl substances (PFASs) in the three major rivers on Hainan Island - Wang-Qing Tang; Tuan-Tuan Wang; Jiang-Wei Miao; Hua-Dong Tan; Hong-Jin Zhang; Tuan-Qi Guo; Zhong-Bing Chen; Chun-Yuan Wu; Ling Mo; Bi-Xian Mai; Sai Wang (Environmental Research, 2025)