Distribution characteristics and retention mechanisms of 236U in sediments of the Beibu Gulf - Zhiyi Tu; Xiaolei Zhao; Lin Liu; Xianghao Luo; Yukun Li; Guodong Yu; Manqing Liu; Kaixing Guo; Chunping Huang; Jianhui Lai; Deyu Wang; Huijuan Wang; et al. (Marine Pollution Bulletin, 2026)