Seasonal redox dynamics and iron-controlled mobility of naturally occurring radionuclides in a tropical coastal aquifer - Le Dinh Hung; Phan Long Ho; Vu Tuan Minh; Lam Tran Van Anh; Le Hoang Minh; Le Quang Vuong; Tran Thien Thanh; Chau Van Tao (Environmental Geochemistry and Health, 2026)