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Instrument: Metrohm 663 VA Stand mercury electrode

Acronym: Metrohm 663 VA

External Identifier: skos:closeMatch: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0515/

Description

The Metrohm 663 VA stand forms the wet chemical part of a polarographic and voltammetric analytical system. It features a mercury electrode, an Ag/AgCl reference electrode and a glassy carbon counter electrode. The size of the mercury drop and the stirrer speed are set manually on the VA Stand. The VA Stand can be operated in Dropping Mercury Electrode (DME), Hanging Mercury Drop Electrode (HMDE) and Static Mercury Drop Electrode (SMDE) modes. The VA Stand can be controlled by a potentiostat in conjunction with the Metrohm IME663 interface.

Datasets (12)

Dataset Name	PI-Supplied Description	PI-Supplied Name
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.	Metrohm 663 VA
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)		Metrohm 663 VA Stands
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.).	Metrohm 663 VA Stands
Dissolved cobalt, nutrients, and hydrography from the Pacific ProteOMZ Expedition, FK160115, on R/V Falkor in 2016		Metrohm 663 VA and µAutolabIII system
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)	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.
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.	Metrohm 663 VA
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.	Metrohm 663 VA
Total dissolved cobalt and labile cobalt concentrations from the US GEOTRACES EPZT cruise TN303 on R/V Thomas G. Thompson from October to December 2013	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.	Metrohm 663 VA
Dissolved total (dCo) and labile Co (lCo) measurements from the US GEOTRACES GP17-OCE cruise on R/V Roger Revelle (RR2214) in the South Pacific and Southern Oceans from December 2022 to January 2023		Metrohm 663 VA Stand (2.663.0020) fitted with an MME pro (6.1256.020); and Metrohm Interface for 663 VA Stand (IME663.S)
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 systems connected to Metrohm 663 VA Stands equipped with hanging mercury drop electrodes and Teflon sampling cups within 7 days of sampling. See more information from the manufacturer.	Metrohm 663 VA Stand mercury electrode
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)		Metrohm 663 VA Stand mercury electrode
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)		Metrohm 663 VA Stand mercury electrode