Dissolved copper binding ligands from seawater samples during POLARSTERN cruise PS100/ GN05 (ARK-XXX/2) ...

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 abou...

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Bibliographic Details
Main Authors: Arnone, Veronica, Santana-Casiano, Juana Magdalena, González, Aridane G
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
Arctic Ocean
copper
Fram Strait
GEOTRACES
GN05
Northeast Greenland Shelf
Organic-binding ligands
PS100
Cruise/expedition
Event label
Station label
LATITUDE
LONGITUDE
DATE/TIME
ELEVATION
Bottle number
DEPTH, water
Pressure, water
Copper-binding ligand
Copper-binding ligand, standard deviation
Copper-binding ligand, conditional stability constant
Copper-binding ligand, conditional stability constant, standard deviation
CTD/Rosette, ultra clean
CTD, Sea-Bird SBE 911plus
Competitive-ligand exchange adsorptive cathodic stripping voltammetry
Polarstern
Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES
Arctic
Greenland
Phytoplankton
Online Access:https://dx.doi.org/10.1594/pangaea.959511
https://doi.pangaea.de/10.1594/PANGAEA.959511
Description
Summary: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). ...

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