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Dissolved and soluble pore water trace metals (Mn, Fe, Co, Ni) from sediment core SO268/2_106-1 (MUC-22) during SONNE cruise SO268/2, central Pacific

Physical and chemical trace metal speciation are important for our understanding of metal cycling and potential toxicity to marine life. Trace metals can have different bioavailability and behave differently in diffusion processes or particle-solution interactions depending on their physical and chemical forms. Here we investigated dissolved (< 0.2 µm) and soluble ( 0.02 µm < 0.2 µm) of Mn, Co, and Ni increased with depth in the oxic pore waters and Fe had the largest but variable colloidal pool. Samples were taken during the SO268 cruise to the German and Belgian license areas for polymetallic nodule mining in the Clarion Clipperton Fracture Zone as part of the MiningImpact project. Sediment cores were collected with multicorers (MUC) and ROV push cores (PUC). Pore water was extracted by means of centrifugation and sequential filtration using cleaned polyethersulfone (PES) syringe filters (0.2 µm) and Anopore syringe filters (0.02 µm). Pore water was preserved by acidification to ~ pH 1.8 with concentrated ultrapure HCl. Samples were preconcentrated offline with seaFAST and measured by High Resolution Sector Field Inductively Coupled Plasma-Mass Spectrometry.

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Schmidt, Katja, Paul, Sophie Anna Luise, Achterberg, Eric Pieter (2022). Dataset: Dissolved and soluble pore water trace metals (Mn, Fe, Co, Ni) from sediment core SO268/2_106-1 (MUC-22) during SONNE cruise SO268/2, central Pacific. https://doi.org/10.1594/PANGAEA.941362

DOI retrieved: 2022

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.941362
Author Schmidt, Katja
Given Name Katja
Family Name Schmidt
More Authors
Paul, Sophie Anna Luise
Achterberg, Eric Pieter
Source Creation 2022
Publication Year 2022
Resource Type text/tab-separated-values - filename: SO268-2_106-1_porewater-trace-metals
Subject Areas
Name: BiologicalClassification

Name: Paleontology