| Chronoamperometry data from cathodic poised potential experiments with subsurface crustal samples from CORK borehole observatories at North Pond on the Mid-Atlantic Ridge during R/V Atlantis cruise AT39-01 | | multichannel potentiostat (model CHI1030C, CHI Instruments, TX, USA)
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| Cyclic voltametry data from cathodic poised potential experiments with subsurface crustal samples from CORK borehole observatories at North Pond on the Mid-Atlantic Ridge during R/V Atlantis cruise AT39-01 | multichannel potentiostat (model CHI1030C, CHI Instruments, TX, USA)
| multichannel potentiostat CHI1030C |
| Metadata for cathodic poised potential experiments with subsurface crustal samples from CORK borehole observatories at North Pond on the Mid-Atlantic Ridge during R/V Atlantis cruise AT39-01 | | multichannel potentiostat (model CHI1030C, CHI Instruments, TX, USA)
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| Total dissolved cobalt and labile dissolved cobalt distributions measured by shipboard voltammetry in the Amundsen Sea, Ross Sea, and Terra Nova Bay during the CICLOPS expedition on RVIB Nathaniel B. Palmer (NBP1801) from Dec 2017 to Feb 2018 | Metrohm 663 VA and µAutolabIII - Voltammetry analyzer equipped with a hanging mercury drop working electrode. The instrument performed a fast linear sweep from -1.4 V to -0.6 V at a rate of 5 V s-1 and produced a cobalt reduction peak at -1.15 V, the voltage at which the Co(DMG)2 complex is reduced from Co(II) to Co(0). The height of the Co reduction peak is linearly proportional to the amount of total dCo present in the sample.
| µAutolabIII |
| Trace element concentrations in dissolved and particulate fractions from samples collected by GO-Flo bottles on R/V Thomas G. Thompson cruise TN280 along Line P in the NE Pacific in May 2012 (GeoMICS project) | | Eco-Chemie uAutolabIII |
| Dissolved cobalt concentrations measured by cathodic stripping voltammetry from the MetZyme cruise KM1128 on R/V Kilo Moana in October 2011 | Measurements were made using the Eco-Chemie µAutolabIII systems connected to Metrohm 663 VA Stands equipped with hanging mercury drop electrodes and Teflon sampling cups. Sample preparation was modified slightly to accommodate use of a Metrohm 837 Sample processor, operated with NOVA 1.8 software (Metrohm Autolab B.V.).
| Eco-Chemie µAutolabIII |
| Dissolved oxygen from sediment cores collected on the R/V Nathaniel B. Palmer cruise NBP1601 to the West Antarctic continental shelf in January of 2016 | | Analytical Instrument Systems model DLK-100 |
| Electrochemical data from sediments collected on R/V Savannah cruise SAV-15-18 at the Cape Lookout Continental Shelf and Slope during July 2015 | Electrochemical analyzer: DLK-100 and DLK-70 with EX-MAN-1 micromanipulator (Analytical Instrument Systems, Inc.).
| Electrochemical analyzer |
| Electrochemical data from sediments collected on R/V Savannah cruise SAV-16-16 at the Cape Lookout Continental Shelf and Slope during May 2016 | Electrochemical analyzer: DLK-100 and DLK-70 with EX-MAN-1 micromanipulator (Analytical Instrument Systems, Inc.).
| Electrochemical analyzer |
| Electrochemical data from sediments collected on R/V Savannah cruise SAV-17-15 in the Gulf of Mexico during July and August 2017 | Electrochemical analyzer: DLK-100 and DLK-70 with EX-MAN-1 micromanipulator (Analytical Instrument Systems, Inc.).
| Electrochemical analyzer |
| Iodine speciation measurements aboard R/V Roger Revelle and R/V Falkor in April and June 2018, respectively. | | BASi Controlled Growth Mercury Electrode |
| Dissolved iron from phyto and microzooplankton experiments from the RVIB Nathaniel B. Palmer NBP0601 cruise in the Ross Sea, Southern Ocean from 2005-2006 (CORSACS project, Antarctic microzooplankton project) | The voltammetric system consisted of Princeton Applied Research (PAR) 303A interfaced with a computer-controlled AutolabII potentiostat/galvanostat (Eco Chemie). The working electrode was a “large” mercury drop (2.8mm2), the reference electrode was Ag: saturated AgCl, saturated KCl, and the counterelectrode was a platinum wire.
| Voltammetry Analyzers |
| Dissolved iron from phyto and microzooplankton experiments on the RVIB Nathaniel B. Palmer NBP0608 cruise in the Ross Sea, Southern Ocean from 2005-2006 (CORSACS project, Antarctic microzooplankton project) | The voltammetric system consisted of Princeton Applied Research (PAR) 303A interfaced with a computer-controlled AutolabII potentiostat/galvanostat (Eco Chemie). The working electrode was a “large” mercury drop (2.8mm2), the reference electrode was Ag: saturated AgCl, saturated KCl, and the counterelectrode was a platinum wire.
| Voltammetry Analyzers |
| Dissolved and labile cobalt from the USCGC Healy HLY1502 in the Canada and Makarov Basins of the Arctic Ocean from August to October 2015 (U.S. GEOTRACES Arctic project) | Concentrations of total dissolved cobalt and labile cobalt were determined using a previously described cathodic stripping voltammetry (CSV) method (Saito and Moffett 2001, Saito et al. 2004). Measurements were made using the Eco-Chemie µAutolabIII systems connected to Metrohm 663 VA Stands equipped with hanging mercury drop electrodes and Teflon sampling cups.
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| Dissolved Cobalt and Labile Cobalt from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018 | Measurement occurred shipboard within a trace metal clean plastic "bubble" within one week of sample collection using the Metrohm 663 VA and µAutolabIII systems equipped with a hanging mercury drop working electrode.
| µAutolabIII |
| Dissolved Cobalt and Labile Cobalt from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018 | Measurement occurred shipboard within a trace metal clean plastic "bubble" within one week of sample collection using the Metrohm 663 VA and µAutolabIII systems equipped with a hanging mercury drop working electrode.
| µAutolabIII |
| Total dissolved Cobalt and labile Cobalt concentrations from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project) | Measurements were made using the Eco-Chemie µAutolabIII system. See more information from the manufacturer.
| Voltammetry Analyzers |
| Copper data with 10 uM SA lingand from Hood Canal, Puget Sound, Washington, USA from R/V Clifford A. Barnes CB960, CB974, CB980, CB985, 2011-2012 (Nitrification and Marine Planktonic Biodiversity project) | BASi Epsilon ε2 voltammetric analyzer
| Voltammetry Analyzers |
| Copper data with 5 uM SA lingand from Hood Canal, Puget Sound, Washington, USA from R/V Clifford A. Barnes CB960, CB974, CB980, CB985, 2011-2012 (Nitrification and Marine Planktonic Biodiversity project) | BASi Epsilon ε2 voltammetric analyzer
| Voltammetry Analyzers |
| Total dissolved copper and copper speciation from Hood Canal, Puget Sound, Washington, USA from R/V Clifford A. Barnes CB960, CB974, CB980, CB985, 2011-2012 (Nitrification and Marine Planktonic Biodiversity project) | BASi Epsilon ε2 voltammetric analyzer
| Voltammetry Analyzers |
| Electrochemical data from sediment cores collected on the Louisiana Shelf of the Northern Gulf of Mexico during November 2020 on R/V Savannah cruise SAV-20-07 | A DLK-70 Electrochemical analyzer with electrode stand (STAND-1) and EX-MAN-1 micromanipulator (Analytical Instrument Systems, Inc.) was used for all electrochemical analyses, including voltammetric scans and potential measurements at the pH minielectrode.
| DLK-70 Electrochemical analyzer with electrode stand |
| Nutrients, cobalt, dissolved iron, and dissolved manganese from trace metal bottles from R/V Knorr cruise KN192-05 in the South Atlantic subtropical gyre and Benguela upwelling region in 2007 (CoFeMUG project) | Eco-Chemie uAutolab-III systems were used.
| Voltammetry Analyzers |
| Nutrients, metals, and CTD observations from CTD casts and bottles from R/V Knorr cruise KN192-05 in the South Atlantic subtropical gyre and Benguela upwelling region from November to December 2007 (CoFeMUG project) | Eco-Chemie uAutolab-III systems were used.
| Voltammetry Analyzers |
| Data from in situ pump profiler system collected on R/V Hugh R. Sharp cruise HRS1415 in August 2014 | | |
| CTD rosette and Bottle data from R/V Hugh R. Sharp cruise HRS1314 in the Chesapeake Bay and coastal Atlantic Ocean in August 2013 | In situ refers to profiling with a pump profiler for O2 and H2S using solid state gold-amalgam electrodes for voltammetry (Luther et al, 2008; Analytical Instrument Systems DLK-60) along with a temperature and salinity sensor from YSI.
| Analytical Instrument Systems DLK-60 |
| Dissolved and total dissolvable trace metal concentrations, Fe and Cu-binding organic ligands, and Fe-binding humic-like substances from R/V Weatherbird cruise WB1513 and R/V Hogarth cruise HO-1807 along the West Florida Shelf in 2015 and 2018 | | Metrohm model 797 VA |
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