查看文章

Uncovering the factors influencing antimony (Sb) species in sediments is crucial to understanding the biogeochemical behavior of Sb, given that sediments are an important sink for Sb in the environment. Such factors, however, have rarely been documented in natural sediments. In this study, we examined Sb species in 40 sediments of the world's largest Sb mine (Xikuangshan) located in southern China and tried to relate them to not only geochemical properties of the sediments but also their microbiological parameters obtained with the next‐generation DNA sequencing and metagenomics. We showed that Sb(III) accounted for <30% of inorganic Sb [Sb(III) + Sb(V)] in the sediments. Linear regression analysis revealed that the percentage of Sb(III) was negatively correlated to redox potential (Eh) but positively correlated to concentration of Fe(II), electrical conductivity, and the relative abundance of Sb(V)‐reducing …