Arnone, Veronica; Santana-Casiano, Juana Magdalena; González, Aridane G (2024): Dissolved copper-binding ligands measured in seawater samples from the POLARSTERN cruise PS94 (GEOTRACES GN04) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967014
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Abstract:
Copper (Cu) is an important micronutrient involved in different phytoplankton metabolic processes. In seawater, Cu speciation is controlled by the formation of organic complexes with natural binding ligands, which controls its bioavailability and toxicity. The information about Cu organic speciation in the ocean is scarce, particularly in the Arctic Ocean where the ongoing climate change is altering the seawater chemistry. This dataset contains measurements of Cu-binding ligands from station depth profiles sampled between from the Norwegian Coast to the Central Arctic Ocean. Samples were collected during GEOTRACES expedition GN04 (Polarstern cruise PS94) between 17 August and 14 October 2015, following GEOTRACES guidelines (https://www.geotraces.org). The Competitive-Ligand Exchange Adsorptive Cathodic Stripping Voltammetry (CLE-ACSV), using Salicylaldoxime (SA) as competitive ligand (Campos and van den Berg, 1994), was the technique applied to determine the Cu-binding ligand concentrations (LCu) and conditional stability constants (logKcu2+L). The concentration of dissolved copper used for the analysis has been reported by Gerringa et al. (2021) (doi:10.1594/PANGAEA.932797).
Related to:
Arnone, Veronica; Santana-Casiano, Juana Magdalena; González-Dávila, Melchor; Planquette, Hélène; Sarthou, Géraldine; Gerringa, Loes J A; González, Aridane G (2023): Natural copper-binding ligands in the Arctic Ocean. The influence of the Transpolar Drift (GEOTRACES GN04). Frontiers in Marine Science, 10, 1306278, https://doi.org/10.3389/fmars.2023.1306278
Gerringa, Loes J A; Rijkenberg, Micha; Laan, Patrick; Middag, Rob; Rutgers van der Loeff, Michiel M (2021): Dissolved trace metals cadmium (Cd), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), zinc (Zn) measured in samples from the Polarstern cruise PS94 to the Arctic Ocean from August to October 2015. PANGAEA, https://doi.org/10.1594/PANGAEA.932797
References:
Lucia, Melcarne; Campos, A M; van den Berg, Constant M G (1994): Determination of copper complexation in sea water by cathodic stripping voltammetry and ligand competition with salicylaldoxime. Analytica Chimica Acta, 284(3), 481-496, https://doi.org/10.1016/0003-2670(94)85055-0
Project(s):
Funding:
Coverage:
Median Latitude: 84.494613 * Median Longitude: 107.537676 * South-bound Latitude: 70.999300 * West-bound Longitude: 21.192800 * North-bound Latitude: 89.930200 * East-bound Longitude: -116.679800
Date/Time Start: 2015-08-20T01:23:00 * Date/Time End: 2015-10-09T04:27:00
Minimum Elevation: -4826.0 m * Maximum Elevation: -151.5 m
Event(s):
PS94/004-2 * Latitude: 79.253330 * Longitude: 30.046170 * Date/Time: 2015-08-20T01:23:00 * Elevation: -228.2 m * Location: Barents Sea * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
PS94/032-4 * Latitude: 81.854000 * Longitude: 30.893330 * Date/Time: 2015-08-22T14:35:00 * Elevation: -3169.0 m * Location: Arctic Ocean * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
PS94/050-3 * Latitude: 84.394000 * Longitude: 30.544170 * Date/Time: 2015-08-26T12:21:00 * Elevation: -4055.7 m * Location: Arctic Ocean * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Cruise/expedition | Expedition | Arnone, Veronica | |||
| 2 | Event label | Event | Arnone, Veronica | |||
| 3 | Station label | Station | Arnone, Veronica | |||
| 4 | LATITUDE | Latitude | Arnone, Veronica | Geocode | ||
| 5 | LONGITUDE | Longitude | Arnone, Veronica | Geocode | ||
| 6 | DATE/TIME | Date/Time | Arnone, Veronica | Geocode | ||
| 7 | ELEVATION | Elevation | m a.s.l. | Arnone, Veronica | CTD, Sea-Bird SBE 911plus | Geocode – neg. bottom depth |
| 8 | Bottle number | Bottle | Arnone, Veronica | |||
| 9 | DEPTH, water | Depth water | m | Arnone, Veronica | CTD, Sea-Bird SBE 911plus | Geocode |
| 10 | Pressure, water | Press | dbar | Arnone, Veronica | CTD, Sea-Bird SBE 911plus | |
| 11 | Copper-binding ligand | Cu ligand | nmol/l | Arnone, Veronica | Competitive-ligand exchange adsorptive cathodic stripping voltammetry (CLE-ACSV) | |
| 12 | Copper-binding ligand, standard deviation | Cu ligand std dev | ± | Arnone, Veronica | Competitive-ligand exchange adsorptive cathodic stripping voltammetry (CLE-ACSV) | |
| 13 | Copper-binding ligand, conditional stability constant | log KcondCu2+L | Arnone, Veronica | Competitive-ligand exchange adsorptive cathodic stripping voltammetry (CLE-ACSV) | ||
| 14 | Copper-binding ligand, conditional stability constant, standard deviation | log KcondCu2+L e | ± | Arnone, Veronica | Competitive-ligand exchange adsorptive cathodic stripping voltammetry (CLE-ACSV) |
License:
Creative Commons Attribution-ShareAlike 4.0 International (CC-BY-SA-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1806 data points