Coupling of Li-Fe: Li Isotope Fractionation during Sorption onto Fe-Oxides.

ABSTRACT: Chemical weathering processes play a key role in regulating the global climate over geological time scales. Lithium (Li) isotope compositions have proven to be a robust proxy for tracing weathering processes that produce secondary minerals, such as clays and oxides, with a focus often placed on Li adsorption to, or incorporation into, clay minerals. In addition, the interaction between Li and Fe-oxides has long been assumed and discussed based on field observations, but experimental constraints on this process are lacking. Here, we investigated the geochemical behavior of Li during its sorption onto individual Fe-oxides, including goethite, hematite, wüstite, and magnetite. With a point of zero charge at ∼7.7, poorly crystallized goethite nanoparticles take up ∼20% of dissolved Li over a p

SUBMITTER: Zhang XY 

PROVIDER: S-EPMC11744929 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature