Presence of per- and polyfluoroalkyl substances (PFASs) in the Nandu River Estuary, Hainan Island - Jiang-Wei Miao; Zhang-Min Jiang; Peng-Fei Xie; Jia-Xing He; Jia Xie; Hai-Long Zhou; Ling-Mo; Shi-Quan Chen; Tuan-Tuan Wang; Sai Wang (Marine Environmental Research, 2026)