Arnone, Veronica; Santana-Casiano, Juana Magdalena; González, Aridane G (2023): Dissolved copper binding ligands from seawater samples during POLARSTERN cruise PS100/ GN05 (ARK-XXX/2) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.959511
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Abstract:
Copper (Cu) is a bio-essential trace metal involved in many phytoplankton metabolic processes. In seawater, its bioavailability is controlled by the formation of organic complexes with binding ligands which also controls the toxicity of free cupric ion (Cu²⁺). Despite this key role, information about Cu speciation is scarce, especially in the Arctic Ocean. However, this oceanographic region is essential to understand the copper biogeochemical cycle. This dataset contains the results of Cu complexation measurements in station depth profiles sampled in Fram Strait and Greenland Shelf. Samples were collected during GEOTRACES expedition GN05 (PS100) between 21 July and 1 September 2016, following GEOTRACES guidelines (https://www.geotraces.org). Copper binding ligand concentrations (LCu) and conditional stability constants (logKcond) were measured by Competitive-Ligand Exchange Adsorptive Cathodic Stripping Voltammetry (CLE-ACSV) using Salicylaldoxime (SA) as competitive ligand (Campos and van den Berg, 1994). The concentration of dissolved copper has been reported by Krisch et al. (2021) (doi:10.1594/PANGAEA.933431).
Keyword(s):
Supplement to:
Arnone, Veronica; Santana-Casiano, Juana Magdalena; González-Dávila, Melchor; Sarthou, Géraldine; Krisch, Stephan; Lodeiro, Pablo Fernandez; Achterberg, Eric Pieter; González, Aridane G (2024): Distribution of copper-binding ligands in Fram Strait and influences from the Greenland Shelf (GEOTRACES GN05). Science of the Total Environment, 909, 168162, https://doi.org/10.1016/j.scitotenv.2023.168162
Related to:
Krisch, Stephan; Roig, Stéphane; Lodeiro, Pablo Fernandez; Yong, Jaw-Chuen; Herzberg, Nicola; Evers, Florian; Achterberg, Eric Pieter; Steffens, Tim (2021): Dissolved trace elements (Fe, Mn, Co, Ni, Cu, Zn, Cd and Pb) measured on water bottle samples from ultra clean CTD/Water sampler-system during POLARSTERN cruise PS100 / GN05 (ARK-XXX/2). PANGAEA, https://doi.org/10.1594/PANGAEA.933431
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: 79.328802 * Median Longitude: -1.428736 * South-bound Latitude: 78.677800 * West-bound Longitude: -19.518000 * North-bound Latitude: 80.853200 * East-bound Longitude: 8.328300
Date/Time Start: 2016-07-22T19:15:00 * Date/Time End: 2016-08-30T14:59:00
Minimum Elevation: -3170.5 m * Maximum Elevation: -169.7 m
Event(s):
PS100/015-1 * Latitude: 79.001170 * Longitude: 8.328330 * Date/Time: 2016-07-22T19:15:00 * Elevation: -793.2 m * Location: North Greenland Sea * Campaign: PS100 (ARK-XXX/2, GN05) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
PS100/021-1 * Latitude: 79.000330 * Longitude: 7.498330 * Date/Time: 2016-07-24T00:25:00 * Elevation: -1223.9 m * Location: North Greenland Sea * Campaign: PS100 (ARK-XXX/2, GN05) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
PS100/028-1 * Latitude: 78.986000 * Longitude: 6.994330 * Date/Time: 2016-07-24T19:20:00 * Elevation: -1200.2 m * Location: North Greenland Sea * Campaign: PS100 (ARK-XXX/2, GN05) * 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 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
1008 data points