Kerstin Hockmann

Hydrology und Experimental Biogeochemistry

Research interests:

• Redox cycling of iron and sulfur and their impact on element mobility (Sb, As and Cr)
• Interactions between metal(loid)s and mineral surfaces (e.g. iron hydroxides and iron sulfides)
• Speciation and mobility of toxic metal(loids) in contaminated soils and sediments
• Speciation and behaviour of toxic metal(loids) in synthetic products, e.g. Sb migration from baby clothes into body liquids
• Methods: XAS (S, Fe, Sb, As and Cr), HPLC-ICP-MS, SEM-EDX, Laser ablation ICP-MS

Selected Publications

Peer reviewed

2024

As, K., Peiffer, S., Uhuegbue, P., Joshi, P., Kappler, A., Marouane, B., Hockmann, K.: Sulfate affinity controls phosphate sorption and the proto-transformation of schwertmannite. Chemical Geology, 653, 122043 (2024).
doi:10.1016/j.chemgeo.2024.122043

2023

Stimmler, P., Obst, M., Stein, M., Göckede, M., Hockmann, K., Schaller, J.: Silicon and calcium controls on iron and aluminum mobility in Arctic soils. Chemosphere, 335, 139087 (2023).
doi:10.1016/j.chemosphere.2023.139087

2021

Karimian, N., Hockmann, K., Planer-Friedrich, B., Johnston, S., Burton, E.: Antimonate Controls Manganese(II)-Induced Transformation of Birnessite at a Circumneutral pH. Environmental Science & Technology, 55(14), 9854-9863 (2021).
doi:10.1021/acs.est.1c00916

Hockmann, K., Karimian, N., Schlagenhauff, S., Planer-Friedrich, B., Burton, E.: Impact of Antimony(V) on Iron(II)-Catalyzed Ferrihydrite Transformation Pathways : A Novel Mineral Switch for Feroxyhyte Formation. Environmental Science & Technology, 55(8), 4954-4963 (2021).
doi:10.1021/acs.est.0c08660

2020

Hockmann, K., Planer-Friedrich, B., Johnston, S., Peiffer, S., Burton, E.: Antimony mobility in sulfidic systems : Coupling with sulfide-induced iron oxide transformations. Geochimica et Cosmochimica Acta, 282, 276-296 (2020).
doi:10.1016/j.gca.2020.05.024