AUTHOR=Liu Zhiyan , Wu Qian , He Chao , Zhang Peng , Wang Xiaoqin , Luo Zifen , Yang Liaoyuan , Huang Chaoqing TITLE=Ecological risk and chemical speciation of heavy metals in surface sediments of the Pearl River Estuary for comprehensive assessment JOURNAL=Frontiers in Environmental Science VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2024.1509277 DOI=10.3389/fenvs.2024.1509277 ISSN=2296-665X