Trace metals in pore waters and bulk sediments from sediment cores during SONNE cruise SO268 in the central Pacific
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| Format: | Dataset Open Access |
| Sprache: | en |
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2026
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| _version_ | 1867168578642378752 |
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| author | Paul, Sophie Anna Luise Koschinsky, Andrea |
| author_facet | Paul, Sophie Anna Luise Koschinsky, Andrea |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We compare trace metal (Mn, Co, V, Mo, U, Cd, and As) cycling in the upper ca. 5 m of the German and Belgian license areas for polymetallic nodule mining in the Clarion Clipperton Zone in the Pacific Ocean. Considerable differences can be observed based on redox conditions, leading to Mn oxide dissolution of the solid phase as well as buried polymetallic nodules. Mobilization of metals to the pore water varies between the study sites, with especially high (up to 250 nmol/kg) dissolved Mo concentrations in parts of the German license area. 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 a gravity corer (GC). 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. Pore water samples were measured by inducitvely coupled Plasma mass spectrometry at Constructor University Bremen. Sediment samples from which the pore water had been extracted were freeze-dried and acid pressure digested using HF and HClO4 or HF, HNO3, and HCl for the nodules. Aluminum, Fe, Mn, and V were then analyzed in the digestion solutions with an inductively coupled plasma optical emission spectrometer and Ti, Co, and Mo with an inductively coupled plasma mass spectrometer at Constructor University Bremen. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_990174 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Trace metals in pore waters and bulk sediments from sediment cores during SONNE cruise SO268 in the central Pacific Paul, Sophie Anna Luise Koschinsky, Andrea JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact We compare trace metal (Mn, Co, V, Mo, U, Cd, and As) cycling in the upper ca. 5 m of the German and Belgian license areas for polymetallic nodule mining in the Clarion Clipperton Zone in the Pacific Ocean. Considerable differences can be observed based on redox conditions, leading to Mn oxide dissolution of the solid phase as well as buried polymetallic nodules. Mobilization of metals to the pore water varies between the study sites, with especially high (up to 250 nmol/kg) dissolved Mo concentrations in parts of the German license area. 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 a gravity corer (GC). 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. Pore water samples were measured by inducitvely coupled Plasma mass spectrometry at Constructor University Bremen. Sediment samples from which the pore water had been extracted were freeze-dried and acid pressure digested using HF and HClO4 or HF, HNO3, and HCl for the nodules. Aluminum, Fe, Mn, and V were then analyzed in the digestion solutions with an inductively coupled plasma optical emission spectrometer and Ti, Co, and Mo with an inductively coupled plasma mass spectrometer at Constructor University Bremen. |
| title | Trace metals in pore waters and bulk sediments from sediment cores during SONNE cruise SO268 in the central Pacific |
| topic | JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact |
| url | https://doi.org/10.1594/PANGAEA.990174 |