The abstract submission is now open!
Goldschmidt2022 conference, Honolulu, Hawaiʻi, USA and online
Dates: 10-15 July 2022 (https://2022.goldschmidt.
Deadline for submission: 1 March (23:59 CET)
Session 12d: “THE ROLE OF TRACE METAL SPECIATION (PHYSICAL AND CHEMICAL) AT MARINE GEOCHEMICAL INTERFACES”
THEME 12: METALS AND NUTRIENT CYCLING
Trace metals exhibit a wide range of chemical, physical, and biological reactivities (e.g. oxidation, precipitation, sorption, complexation, toxicity) depending on their chemical and physical speciation (e.g. ions, ion pairs, organic and inorganic complexes, colloids, suspended particles). Thus, the speciation of metals is of great importance not only to substantiate the geochemical fate of trace metals in the world’s ocean but also to estimate their availability and toxicity to marine biota. Geochemical interfaces are of particular interest because they exert a great control on trace metal cycling, fluxes, and rates and a full understanding of trace metal speciation along these boundaries is necessary for a more holistic understanding of the fate of trace metals in the marine environment. However, despite decades of marine trace metal research, we are still lacking knowledge of the speciation along geochemical interfaces (i) in space and time; (ii) the underlying driving processes; and (iii) their role for the global marine biogeochemical element cycles. Geochemical interfaces include sediment-water and atmosphere-water boundaries as well as regions with physicochemical gradients of density, redox conditions, temperature, pH, or salinity, such as hydrothermal systems, ground water discharges, deep sea environments, estuaries, and coastal embayments.
This session brings together transdisciplinary scientists, exploring trace metal speciation at various marine geochemical interfaces. We encourage contributions relating to novel analytical tools, modelling approaches, and laboratory-based experiments.
Dr Rebecca Zitoun, GEOMAR Helmholtz Centre for Ocean Research Kiel
Prof Sylvia Sander, GEOMAR Helmholtz Centre for Ocean Research Kiel
Prof Andrea Koschinsky, Jacobs University Bremen