Dissolved copper, copper-binding ligands and dissolved organic carbon (DOC) in deep-sea pore waters of the Pacific Ocean
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| Auteurs principaux: | , , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2021
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| _version_ | 1867168574282399744 |
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| author | Paul, Sophie Anna Luise Zitoun, Rebecca Noowong, Ann Manirajah, Mythili Schmidt, Katja Wulf, Miriam Koschinsky, Andrea |
| author_facet | Paul, Sophie Anna Luise Zitoun, Rebecca Noowong, Ann Manirajah, Mythili Schmidt, Katja Wulf, Miriam Koschinsky, Andrea |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The release of potentially toxic metals, such as copper (Cu), into the water column is of concern during polymetallic nodule mining. The bioavailability and thus toxicity of Cu is strongly influenced by its speciation which is dominated by organic ligand (L) complexation in seawater, with L-complexes being considered less bioavailable than free Cu2+. The presence of CuL-complexes in deep-sea sediments has, however, not been systematically studied in the context of deep-sea mining. We thus analyzed the dissolved Cu concentration ([dCu]), Cu-binding L concentration ([L]) and DOC concentration in deep-sea pore waters of two polymetallic nodule provinces in the Pacific Ocean, the Peru Basin and the Clarion-Clipperton-Zone. We compared undisturbed sites with 26-year-old disturbance track sites and one 5-week-old site where a small sediment plume resettled. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_932940 |
| institution | PANGAEA |
| language | en |
| publishDate | 2021 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Dissolved copper, copper-binding ligands and dissolved organic carbon (DOC) in deep-sea pore waters of the Pacific Ocean Paul, Sophie Anna Luise Zitoun, Rebecca Noowong, Ann Manirajah, Mythili Schmidt, Katja Wulf, Miriam Koschinsky, Andrea CCZ; copper; Deep sea; DOC; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; organic ligands; Pacific Ocean; pore water The release of potentially toxic metals, such as copper (Cu), into the water column is of concern during polymetallic nodule mining. The bioavailability and thus toxicity of Cu is strongly influenced by its speciation which is dominated by organic ligand (L) complexation in seawater, with L-complexes being considered less bioavailable than free Cu2+. The presence of CuL-complexes in deep-sea sediments has, however, not been systematically studied in the context of deep-sea mining. We thus analyzed the dissolved Cu concentration ([dCu]), Cu-binding L concentration ([L]) and DOC concentration in deep-sea pore waters of two polymetallic nodule provinces in the Pacific Ocean, the Peru Basin and the Clarion-Clipperton-Zone. We compared undisturbed sites with 26-year-old disturbance track sites and one 5-week-old site where a small sediment plume resettled. |
| title | Dissolved copper, copper-binding ligands and dissolved organic carbon (DOC) in deep-sea pore waters of the Pacific Ocean |
| topic | CCZ; copper; Deep sea; DOC; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; organic ligands; Pacific Ocean; pore water |
| url | https://doi.org/10.1594/PANGAEA.932940 |