http://lod.bco-dmo.org/id/dataset/820508
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2020-08-11
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
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
2020-08-11
publication
2020-08-11
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-11-30
publication
https://doi.org/10.26008/1912/bco-dmo.820508.1
Kristen Nicolle Buck
University of South Florida
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Buck, K., Mellett, T. (2021) 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. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-08-11 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.820508.1 [access date]
WFS GoM 2015 and 2018 Dataset Description: <p>Dissolved and total dissolvable trace metal concentrations, Fe and Cu-binding organic ligands, and Fe-binding humic-like substances for two cruises conducted along the West Florida Shelf (WFS) in the eastern Gulf of Mexico in 2015 and 2018.</p> Methods and Sampling: <p>The following methods are provided in Mellett &amp; Buck (2020).</p>
<p><strong>Sample Collection</strong><br />
Surface water samples were collected from the West Florida Shelf in the eastern Gulf of Mexico 18-21 June 2015 aboard the R/V Weatherbird II and 27 February to 2 March 2018 aboard the R/V Hogarth. Underway hydrographic data for salinity and temperature were collected on both ships via flow-through systems (SeaBird); flow-through chlorophyll a data were also collected in summer on the R/V Weatherbird II via a calibrated fluorometer. The flow-through system on the R/V Hogarth did not include a fluorescence sensor and discrete samples were collected for chlorophyll a analysis at the University of South Florida (USF). Samples for trace metals, macronutrients, and chlorophyll a were collected from ~2 m depth using a custom surface pump "towfish" system (Bruland et al. 2005) towed alongside the vessels. Our "towfish" sampling system consisted of an all PTFE Teflon air-operated double-diaphragm pump (Jabsco, Cole-Parmer), acid-cleaned tubing (Bev-A-Line IV, ½", Cole-Parmer), and a 35 kg steel and lead "towfish" coated in non-metallic epoxy paint (EPO coat VA, DeCara Inc.). For deployment, the tubing was fed through the towfish such that the tubing opening was located ~10 cm forward of the towfish body, which was suspended in the water from the starboard A-frame using a ~2 m length umbilical of ½" diameter non-metallic line (Vectran) attached to the end of the vessel hydrowire. To collect surface water samples underway, the package was towed at 5-10 knots, which allowed the towfish to sample at the edge of the ship wake with the tubing intake facing into the water ahead of the towfish. The surface water from the towfish was pumped into a positive pressure bubble in the main lab of each ship for sampling.</p>
<p><strong>Dissolved Trace Metals</strong><br />
Samples for dissolved ('d') trace metals were filtered inline through 0.2 μm Acropak capsule filters (Pall) into 125 mL low-density polyethylene (LDPE; Nalgene) bottles. The Acropak capsule filters were cleaned by leaching with 10% TraceMetal Grade (TMG) HCl, rinsing with MQ water (Milli-Q; &gt;18.2 MΩ cm), and then flushing with at least 1 L of surface seawater prior to use. The 125 mL sample bottles used for dissolved and total dissolvable trace metals were cleaned with TMG nitric acid (HNO₃; Fisher) in accordance with GEOTRACES protocols (Cutter et al. 2017), and stored filled with dilute (0.024 M) TMG HCl (Fisher) until use. Total dissolvable ('TD') trace metal samples were collected immediately after collection of dissolved samples by removing the inline filter capsule and rinsing and filling a 125 mL LDPE bottle with unfiltered water. Both sample types were acidified with the equivalent of 4 mL 6 M high-purity (Fisher Optima) HCl per liter of seawater to 0.024M (~pH 1.7-1.8, NBS scale; Johnson et al. (2007)), and stored for at least 6 months. Prior to preconcentration and analysis, total dissolvable metal samples were filtered through 0.4 μm polycarbonate track etched (PCTE; Whatman) filters on a Teflon filtration rig (Savillex) into 125 mL LDPE bottles. The PCTE filters were cleaned prior to use by soaking in 10% HCl (TMG; Fisher) for at least a week, then rinsed 5 times with MQ water, and were stored in 0.024 M HCl (TMG, Fisher) until use.</p>
<p>Dissolved and dissolvable metals were processed using an automated seaFAST-pico (ESI) preconcentration system (Lagerström et al. 2013). Samples were first UV-oxidized to ensure recovery of any organic-bound Cu and Co (Milne et al. 2010; Biller and Bruland 2012). The metals of interest were then preconcentrated by seaFAST onto a Nobias PA1 chelating resin at pH 6.2 and eluted from the column with 1N triple quartz-distilled HNO₃ with internal reference standards of indium and rhodium. The eluent was then analyzed via a method of standard addition on a Thermo Scientific Element XR Inductively Coupled Plasma Mass Spectrometer (ICP-MS) in medium resolution and counting mode at the USF College of Marine Science (Hollister et al. 2020). The blanks and limit of detection of the seaFAST-pico system were calculated using "air blanks" that encompass both the reagent blank and the manifold blank of the system (Table S1). The accuracy of metal concentrations measured using this method was established by comparison of NASS-7 and SAFe (Johnson et al. 2007) seawater reference material results with consensus values (Table S1). All reference material was within the consensus range for each metal measured with the exception of dCd in SAFe S1, which was quantified as 2.4 ± 3.7 pM (n=4) against a consensus of 1.0 ± 0.3 pM. The average relative standard deviation of samples measured in replicate across the dataset were 7.9% (Fe), 5.7% (Cu), 3.2% (Mn), 10.3% (Zn), 7.0% (Co), 5.9% (Ni), 15.4% (Cd), and 8.7% (Pb), respectively. The limit of detection for each metal was 56.7 pM (Fe), 11.6 pM (Cu), 2.4 pM (Mn), 18.9 pM (Zn), 0.9 pM (Co), 41.1 pM (Ni), 0.7 pM (Cd), and 1.6 pM (Pb), respectively (3s of air blanks; Table S1).</p>
<p><strong>Dissolved Cu and Fe speciation</strong><br />
Filtered (&lt;0.2 µm, Pall Acropak) samples were collected for dissolved Fe-binding and Cu-binding organic ligands in 500 mL fluorinated high-density polyethylene (FPE) bottles (Buck et al. 2012). These sample bottles were cleaned by soaking in a soap bath for at least one week, then in a 10% TMG HCl (1.2 M) bath for at least a month. Bottles were then rinsed at least 3-5 times with Milli-Q water (&gt;18.2 MΩ cm) and stored filled with Milli-Q until use. Prior to filling with sample, bottles were rinsed three times with sample and were stored frozen (-20°C) until analysis on land.</p>
<p>The concentrations and conditional stability constants of Cu- and Fe-binding organic ligands were measured using competitive ligand exchange adsorptive cathodic stripping voltammetry (CLE-AdCSV). The competitive ligand salicylaldoxime (SA; Sigma-Aldrich) was used to compete with natural ligands (Campos and van den Berg 1994; Rue and Bruland 1995). Measurements were made on a BioAnalytical Systems (BASi) controlled-growth mercury electrode interfaced with an Epsilon 2 analyzer (BASi). Final SA concentrations of 2 μM and 25 μM were used for Cu and Fe speciation measurements, respectively (Buck et al. 2012; Jacquot and Moffett 2015). Deposition times of 300 s and 90 s were used for Cu and Fe speciation, respectively.</p>
<p>The full details of the Fe and Cu speciation methods and theory may be found elsewhere (Campos and van den Berg 1994; Rue and Bruland 1995; Buck et al. 2012, 2018). Briefly, for each titration, aliquots of 10 mL were distributed into fifteen lidded Teflon vials (Savillex), which had previously been conditioned with Milli-Q, borate buffer, metal additions, and SA prior to use. Each 10 mL aliquot was buffered to pH 8.2 (total scale) with a 1.5 M borate buffer (7.5 mM final concentration) made in 0.4 N ammonium hydroxide (Optima grade; Fisher) and cleaned for trace metals using Chelex resin. For Cu titrations, additions of 0–20 nM Cu were used and for Fe, additions of 0–10 nM Fe were used in separate vials. Metal additions were allowed to equilibrate overnight, and SA additions were equilibrated at least 1 h before analysis (Buck et al. 2012; Abualhaija and van den Berg 2014).</p>
<p>Titration data were processed using ProMCC software (Omanović et al. 2015; Pižeta et al. 2015), which fits the datasets using multiple regression models, both linear and non-linear. A single ligand class was found to be the best fit for the speciation data for both metals. Refer to Mellet &amp; Buck (2020) for full details.</p>
<p><strong>Electroactive Fe-binding humic-like substances</strong><br />
Remaining volume from the speciation samples used for the Fe- and Cu-binding ligand analyses was used for the quantification of naturally occurring electroactive Fe-binding humic-like substances (HS-like ligands). The measurements were made following the method of Laglera et al.(2007) as modified by Bundy et al. (2014). Briefly, a 10 mL sub-sample was amended with Fe (50 nM) to saturate any excess Fe-binding ligands present in the sample, buffered with 1.5 M borate buffer, and allowed to equilibrate for at least 2 hours. After equilibration, 20 mM potassium bromate oxidant was added and the electroactive response of the natural Fe-ligand complexes formed in the sample was measured on a Metrohm model 797 VA in direct current mode. Potential was scanned from -100 mV to -1100 mV with a deposition potential of -100 mV, and a deposition time between 60 s and 180 s depending on peak response. This approach directly detects any Fe-binding ligands in the samples that form electroactive complexes with Fe. Quantification of these electroactive Fe-binding ligands was made by method of standard additions of Suwannee River humic acid standard (SRHA; International Humic Substance Society) ranging from 0–60 mg L⁻¹ or 0–400 mg L⁻¹ (dependent on peak response). The concentrations of the electroactive Fe-binding ligands determined with this approach are thus described as Fe-binding HS-like ligands in the samples.</p>
Funding provided by Florida Fish and Wildlife Conservation Commission (FWC) Award Number: FWC award to K. Buck
Funding provided by Florida Institute of Oceanography (FIO) Award Number: FIO award to K. Buck
completed
Kristen Nicolle Buck
University of South Florida
541-737-7401
2651 SW Orchard Avenue CEOAS
Corvallis
OR
97331
USA
kristen.buck@oregonstate.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Date
Time
ISO_DateTime_UTC
Latitude
Longitude
Salinity
Temperature
Fluor
Fluor_Flag
Chla_Fluor
Chla_Fluor_Flag
Nitrate_Nitrite
Nitrate_Nitrite_Flag
Silicic_Acid
Silicic_Acid_Flag
Phosphate
Phosphate_Flag
Fe_D_CONC
std_Fe_D_CONC
Fe_D_CONC_Flag
Cu_D_CONC
std_Cu_D_CONC
Cu_D_CONC_Flag
Mn_D_CONC
std_Mn_D_CONC
Mn_D_CONC_Flag
Zn_D_CONC
std_Zn_D_CONC
Zn_D_CONC_Flag
Co_D_CONC
std_Co_D_CONC
Co_D_CONC_Flag
Ni_D_CONC
std_Ni_D_CONC
Ni_D_CONC_Flag
Cd_D_CONC
std_Cd_D_CONC
Cd_D_CONC_Flag
Pb_D_CONC
std_Pb_D_CONC
Pb_D_CONC_Flag
Fe_TD_CONC
std_Fe_TD_CONC
Fe_TD_CONC_Flag
Cu_TD_CONC
std_Cu_TD_CONC
Cu_TD_CONC_Flag
Mn_TD_CONC
std_Mn_TD_CONC
Mn_TD_CONC_Flag
Zn_TD_CONC
std_Zn_TD_CONC
Zn_TD_CONC_Flag
Co_TD_CONC
std_Co_TD_CONC
Co_TD_CONC_Flag
Ni_TD_CONC
std_Ni_TD_CONC
Ni_TD_CONC_Flag
Cd_TD_CONC
std_Cd_TD_CONC
Cd_TD_CONC_Flag
Pb_TD_CONC
std_Pb_TD_CONC
Pb_TD_CONC_Flag
L_Fe_D_CONC
std_L_Fe
L_Fe_D_CONC_Flag
logK_L_Fe
std_logK_L_Fe
eL_Fe_D_CONC
std_eL_Fe
eL_Fe_Flag
logFe_prime
log_alpha_Fe
L_Cu_D_CONC
std_L_Cu
L_Cu_D_CONC_Flag
logK_L_Cu
std_logK_L_Cu
eL_Cu_D_CONC
std_eL_Cu_D_CONC
logCu2
log_alpha_Cu
Fe_HS_like_D_CONC
std_Fe_HS_like
Fe_HS_like_D_CONC_Flag
BioAnalytical Systems (BASi) controlled-growth mercury electrode
Epsilon 2 analyzer (BASi)
Element XR Inductively Coupled Plasma Mass Spectrophotometer
SeaFAST pico
Metrohm model 797 VA
theme
None, User defined
date
time_local
ISO_DateTime_UTC
latitude
longitude
salinity
water temperature at measurement depth
fluorescence
quality flag
chlorophyll-a; fluorometric method
nitrate plus nitrite
Silicic acid
phosphate
Iron
Copper
Manganese
Zinc
Cobalt
Nickel
Cadmium
Lead
metal_ligand
featureType
BCO-DMO Standard Parameters
BASi Controlled Growth Mercury Electrode
BASi EC-epsilon 2 Autoanalyzer
Inductively Coupled Plasma Mass Spectrometer
SeaFAST Automated Preconcentration System
Voltammetry Analyzers
instrument
BCO-DMO Standard Instruments
WB1513
HO-1807
service
Deployment Activity
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Trace metals and metal-binding ligands in the Eastern Gulf of Mexico
https://osprey.bco-dmo.org/project/814733
Trace metals and metal-binding ligands in the Eastern Gulf of Mexico
<p>The concentrations and bioavailability of trace metals influence marine food web productivity and structure, and are an integral component of ocean biogeochemistry. The Gulf of Mexico is a semi-enclosed basin, and trace metal concentrations in these waters appear to be heavily impacted by margin sources including rivers, continental shelf sediments and seasonal dust deposition, though much of the basin remains understudied for trace metals. In the eastern Gulf of Mexico specifically, dust-derived iron (Fe) has been hypothesized to play a role in the development of harmful algal blooms of <em>Karenia brevis</em>. Sources and cycling of trace metals within the eastern Gulf of Mexico may also impact the North Atlantic via Loop Current-Gulf Stream circulation connections. This project examines spatial and temporal variability in the concentrations of Fe and other bioactive trace metals across the West Florida Shelf in the eastern Gulf of Mexico.</p>
GoM_Metals_Ligands
largerWorkCitation
project
eng; USA
oceans
-85.6906
-82.34756
25.8812
28.1879
2015-06-18
2018-03-02
Eastern Gulf of Mexico, West Florida Shelf
0
BCO-DMO catalogue of parameters from 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
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/820751.rdf
Name: Date
Units: unitless
Description: <p>Date; format: MM-DD-YY</p>
http://lod.bco-dmo.org/id/dataset-parameter/820752.rdf
Name: Time
Units: unitless
Description: <p>Time (GMT-5); format: hh:mm</p>
http://lod.bco-dmo.org/id/dataset-parameter/820753.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) formatted to ISO8601 standard: YYYY-MM-DDThh:mmZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/820754.rdf
Name: Latitude
Units: deg N
Description: <p>Latitude where each sample was collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/820755.rdf
Name: Longitude
Units: deg E
Description: <p>Longitude where each sample was collected</p>
http://lod.bco-dmo.org/id/dataset-parameter/820756.rdf
Name: Salinity
Units: psu
Description: <p>Practical salinity from ships flow-through sensor at the time of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/820757.rdf
Name: Temperature
Units: deg C
Description: <p>Temperature from ships flow-through sensor at the time of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/820758.rdf
Name: Fluor
Units: micrograms per liter (ug/L)
Description: <p>Chl-a calibrated fluorescence from ship flow-through sensor at the time of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/820759.rdf
Name: Fluor_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820760.rdf
Name: Chla_Fluor
Units: micrograms per liter (ug/L)
Description: <p>Concentration of chlorophyll a</p>
http://lod.bco-dmo.org/id/dataset-parameter/820761.rdf
Name: Chla_Fluor_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820762.rdf
Name: Nitrate_Nitrite
Units: micromoles per liter (umol/L)
Description: <p>Concentration of dissolved (<0.2 um) nitrate and nitrite</p>
http://lod.bco-dmo.org/id/dataset-parameter/820763.rdf
Name: Nitrate_Nitrite_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820764.rdf
Name: Silicic_Acid
Units: micromoles per liter (umol/L)
Description: <p>Concentration of dissolved (<0.2 um) silicic acid</p>
http://lod.bco-dmo.org/id/dataset-parameter/820765.rdf
Name: Silicic_Acid_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820766.rdf
Name: Phosphate
Units: micromoles per liter (umol/L)
Description: <p>Concentration of dissolved (<0.2 um) phosphate</p>
http://lod.bco-dmo.org/id/dataset-parameter/820767.rdf
Name: Phosphate_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820768.rdf
Name: Fe_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of dissolved (<0.2 um) iron</p>
http://lod.bco-dmo.org/id/dataset-parameter/820769.rdf
Name: std_Fe_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of dissolved iron concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820770.rdf
Name: Fe_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820771.rdf
Name: Cu_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of dissolved (<0.2 um) copper</p>
http://lod.bco-dmo.org/id/dataset-parameter/820772.rdf
Name: std_Cu_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of dissolved copper concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820773.rdf
Name: Cu_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820774.rdf
Name: Mn_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of dissolved (<0.2 um) manganese</p>
http://lod.bco-dmo.org/id/dataset-parameter/820775.rdf
Name: std_Mn_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of dissolved manganese concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820776.rdf
Name: Mn_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820777.rdf
Name: Zn_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of dissolved (<0.2 um) zinc</p>
http://lod.bco-dmo.org/id/dataset-parameter/820778.rdf
Name: std_Zn_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of dissolved zinc concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820779.rdf
Name: Zn_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820780.rdf
Name: Co_D_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Concentration of dissolved (<0.2 um) cobalt</p>
http://lod.bco-dmo.org/id/dataset-parameter/820781.rdf
Name: std_Co_D_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Uncertainty of dissolved cobalt concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820782.rdf
Name: Co_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820783.rdf
Name: Ni_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of dissolved (<0.2 um) nickel</p>
http://lod.bco-dmo.org/id/dataset-parameter/820784.rdf
Name: std_Ni_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of dissolved nickel concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820785.rdf
Name: Ni_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820786.rdf
Name: Cd_D_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Concentration of dissolved (<0.2 um) cadmium</p>
http://lod.bco-dmo.org/id/dataset-parameter/820787.rdf
Name: std_Cd_D_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Uncertainty of dissolved cadmium concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820788.rdf
Name: Cd_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820789.rdf
Name: Pb_D_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Concentration of dissolved (<0.2 um) lead</p>
http://lod.bco-dmo.org/id/dataset-parameter/820790.rdf
Name: std_Pb_D_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Uncertainty of dissolved lead concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820791.rdf
Name: Pb_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820792.rdf
Name: Fe_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of total dissolvable (unfiltered, acidified) iron</p>
http://lod.bco-dmo.org/id/dataset-parameter/820793.rdf
Name: std_Fe_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of total dissolvable iron concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820794.rdf
Name: Fe_TD_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820795.rdf
Name: Cu_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of total dissolvable (unfiltered, acidified) copper</p>
http://lod.bco-dmo.org/id/dataset-parameter/820796.rdf
Name: std_Cu_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of total dissolvable copper concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820797.rdf
Name: Cu_TD_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820798.rdf
Name: Mn_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of total dissolvable (unfiltered, acidified) manganese</p>
http://lod.bco-dmo.org/id/dataset-parameter/820799.rdf
Name: std_Mn_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of total dissolvable manganese concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820800.rdf
Name: Mn_TD_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820801.rdf
Name: Zn_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of total dissolvable (unfiltered, acidified) zinc</p>
http://lod.bco-dmo.org/id/dataset-parameter/820802.rdf
Name: std_Zn_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of total dissolvable zinc concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820803.rdf
Name: Zn_TD_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820804.rdf
Name: Co_TD_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Concentration of total dissolvable (unfiltered, acidified) cobalt</p>
http://lod.bco-dmo.org/id/dataset-parameter/820805.rdf
Name: std_Co_TD_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Uncertainty of total dissolvable cobalt concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820806.rdf
Name: Co_TD_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820807.rdf
Name: Ni_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of total dissolvable (unfiltered, acidified) nickel</p>
http://lod.bco-dmo.org/id/dataset-parameter/820808.rdf
Name: std_Ni_TD_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of total dissolvable nickel concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820809.rdf
Name: Ni_TD_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820810.rdf
Name: Cd_TD_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Concentration of total dissolvable (unfiltered, acidified) cadmium</p>
http://lod.bco-dmo.org/id/dataset-parameter/820811.rdf
Name: std_Cd_TD_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Uncertainty of total dissolvable cadmium concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820812.rdf
Name: Cd_TD_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820813.rdf
Name: Pb_TD_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Concentration of total dissolvable (unfiltered, acidified) lead</p>
http://lod.bco-dmo.org/id/dataset-parameter/820814.rdf
Name: std_Pb_TD_CONC
Units: picomoles per liter (pmol/L)
Description: <p>Uncertainty of total dissolvable lead concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820815.rdf
Name: Pb_TD_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820816.rdf
Name: L_Fe_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of dissolved iron-binding ligands</p>
http://lod.bco-dmo.org/id/dataset-parameter/820817.rdf
Name: std_L_Fe
Units: nanomoles per liter (nmol/L)
Description: <p>Uncertainty of dissolved iron-binding ligands</p>
http://lod.bco-dmo.org/id/dataset-parameter/820818.rdf
Name: L_Fe_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820819.rdf
Name: logK_L_Fe
Units: unitless
Description: <p>Log conditional stability constant of dissolved iron-binding ligands with respect to Fe'</p>
http://lod.bco-dmo.org/id/dataset-parameter/820820.rdf
Name: std_logK_L_Fe
Units: unitless
Description: <p>95% confidence interval of the log conditional stability constant of dissolved iron-binding ligands</p>
http://lod.bco-dmo.org/id/dataset-parameter/820821.rdf
Name: eL_Fe_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Excess dissolved iron-binding ligands: dissolved iron-binding ligand concentration minus dissolved iron concentration ([LFe]–[dFe])</p>
http://lod.bco-dmo.org/id/dataset-parameter/820822.rdf
Name: std_eL_Fe
Units: nanomoles per liter (nmol/L)
Description: <p>Propagated uncertainty of excess iron-binding ligands</p>
http://lod.bco-dmo.org/id/dataset-parameter/820823.rdf
Name: eL_Fe_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820824.rdf
Name: logFe_prime
Units: M
Description: <p>Log inorganic Fe concentrations</p>
http://lod.bco-dmo.org/id/dataset-parameter/820825.rdf
Name: log_alpha_Fe
Units: unitless
Description: <p>Log complexation capacity</p>
http://lod.bco-dmo.org/id/dataset-parameter/820826.rdf
Name: L_Cu_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Concentration of dissolved copper-binding ligands</p>
http://lod.bco-dmo.org/id/dataset-parameter/820827.rdf
Name: std_L_Cu
Units: nanomoles per liter (nmol/L)
Description: <p>95% confidence interval of the dissolved copper-binding ligand concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820828.rdf
Name: L_Cu_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
http://lod.bco-dmo.org/id/dataset-parameter/820829.rdf
Name: logK_L_Cu
Units: unitless
Description: <p>Log conditional stability constant of dissolved copper-binding ligands with respect to Cu2+</p>
http://lod.bco-dmo.org/id/dataset-parameter/820830.rdf
Name: std_logK_L_Cu
Units: unitless
Description: <p>95% confidence interval of the log of conditional stability constant of dissolved copper-binding ligands</p>
http://lod.bco-dmo.org/id/dataset-parameter/820831.rdf
Name: eL_Cu_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Excess dissolved copper-binding ligands: dissolved copper-binding ligand concentration minus dissolved copper concentration ([LCu]–[dCu])</p>
http://lod.bco-dmo.org/id/dataset-parameter/820832.rdf
Name: std_eL_Cu_D_CONC
Units: nanomoles per liter (nmol/L)
Description: <p>Propagated uncertainty of excess copper-binding ligands</p>
http://lod.bco-dmo.org/id/dataset-parameter/820833.rdf
Name: logCu2
Units: M
Description: <p>Log free cupric ion concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/820834.rdf
Name: log_alpha_Cu
Units: unitless
Description: <p>Log complexation capacity of copper binding ligands</p>
http://lod.bco-dmo.org/id/dataset-parameter/820835.rdf
Name: Fe_HS_like_D_CONC
Units: micrograms per liter (ug/L)
Description: <p>Concentration of iron-binding electroactive humic-like substances</p>
http://lod.bco-dmo.org/id/dataset-parameter/820836.rdf
Name: std_Fe_HS_like
Units: micrograms per liter (ug/L)
Description: <p>Uncertainty of iron-binding electroactive humic-like substances</p>
http://lod.bco-dmo.org/id/dataset-parameter/820837.rdf
Name: Fe_HS_like_D_CONC_Flag
Units: unitless
Description: <p>Ocean Data View (ODV) qualifying flag</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
17598
https://darchive.mblwhoilibrary.org/bitstream/1912/27785/1/dataset-820508_wfs-gom-2015-and-2018__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.820508.1
download
onLine
dataset
<p>The following methods are provided in Mellett &amp; Buck (2020).</p>
<p><strong>Sample Collection</strong><br />
Surface water samples were collected from the West Florida Shelf in the eastern Gulf of Mexico 18-21 June 2015 aboard the R/V Weatherbird II and 27 February to 2 March 2018 aboard the R/V Hogarth. Underway hydrographic data for salinity and temperature were collected on both ships via flow-through systems (SeaBird); flow-through chlorophyll a data were also collected in summer on the R/V Weatherbird II via a calibrated fluorometer. The flow-through system on the R/V Hogarth did not include a fluorescence sensor and discrete samples were collected for chlorophyll a analysis at the University of South Florida (USF). Samples for trace metals, macronutrients, and chlorophyll a were collected from ~2 m depth using a custom surface pump "towfish" system (Bruland et al. 2005) towed alongside the vessels. Our "towfish" sampling system consisted of an all PTFE Teflon air-operated double-diaphragm pump (Jabsco, Cole-Parmer), acid-cleaned tubing (Bev-A-Line IV, ½", Cole-Parmer), and a 35 kg steel and lead "towfish" coated in non-metallic epoxy paint (EPO coat VA, DeCara Inc.). For deployment, the tubing was fed through the towfish such that the tubing opening was located ~10 cm forward of the towfish body, which was suspended in the water from the starboard A-frame using a ~2 m length umbilical of ½" diameter non-metallic line (Vectran) attached to the end of the vessel hydrowire. To collect surface water samples underway, the package was towed at 5-10 knots, which allowed the towfish to sample at the edge of the ship wake with the tubing intake facing into the water ahead of the towfish. The surface water from the towfish was pumped into a positive pressure bubble in the main lab of each ship for sampling.</p>
<p><strong>Dissolved Trace Metals</strong><br />
Samples for dissolved ('d') trace metals were filtered inline through 0.2 μm Acropak capsule filters (Pall) into 125 mL low-density polyethylene (LDPE; Nalgene) bottles. The Acropak capsule filters were cleaned by leaching with 10% TraceMetal Grade (TMG) HCl, rinsing with MQ water (Milli-Q; &gt;18.2 MΩ cm), and then flushing with at least 1 L of surface seawater prior to use. The 125 mL sample bottles used for dissolved and total dissolvable trace metals were cleaned with TMG nitric acid (HNO₃; Fisher) in accordance with GEOTRACES protocols (Cutter et al. 2017), and stored filled with dilute (0.024 M) TMG HCl (Fisher) until use. Total dissolvable ('TD') trace metal samples were collected immediately after collection of dissolved samples by removing the inline filter capsule and rinsing and filling a 125 mL LDPE bottle with unfiltered water. Both sample types were acidified with the equivalent of 4 mL 6 M high-purity (Fisher Optima) HCl per liter of seawater to 0.024M (~pH 1.7-1.8, NBS scale; Johnson et al. (2007)), and stored for at least 6 months. Prior to preconcentration and analysis, total dissolvable metal samples were filtered through 0.4 μm polycarbonate track etched (PCTE; Whatman) filters on a Teflon filtration rig (Savillex) into 125 mL LDPE bottles. The PCTE filters were cleaned prior to use by soaking in 10% HCl (TMG; Fisher) for at least a week, then rinsed 5 times with MQ water, and were stored in 0.024 M HCl (TMG, Fisher) until use.</p>
<p>Dissolved and dissolvable metals were processed using an automated seaFAST-pico (ESI) preconcentration system (Lagerström et al. 2013). Samples were first UV-oxidized to ensure recovery of any organic-bound Cu and Co (Milne et al. 2010; Biller and Bruland 2012). The metals of interest were then preconcentrated by seaFAST onto a Nobias PA1 chelating resin at pH 6.2 and eluted from the column with 1N triple quartz-distilled HNO₃ with internal reference standards of indium and rhodium. The eluent was then analyzed via a method of standard addition on a Thermo Scientific Element XR Inductively Coupled Plasma Mass Spectrometer (ICP-MS) in medium resolution and counting mode at the USF College of Marine Science (Hollister et al. 2020). The blanks and limit of detection of the seaFAST-pico system were calculated using "air blanks" that encompass both the reagent blank and the manifold blank of the system (Table S1). The accuracy of metal concentrations measured using this method was established by comparison of NASS-7 and SAFe (Johnson et al. 2007) seawater reference material results with consensus values (Table S1). All reference material was within the consensus range for each metal measured with the exception of dCd in SAFe S1, which was quantified as 2.4 ± 3.7 pM (n=4) against a consensus of 1.0 ± 0.3 pM. The average relative standard deviation of samples measured in replicate across the dataset were 7.9% (Fe), 5.7% (Cu), 3.2% (Mn), 10.3% (Zn), 7.0% (Co), 5.9% (Ni), 15.4% (Cd), and 8.7% (Pb), respectively. The limit of detection for each metal was 56.7 pM (Fe), 11.6 pM (Cu), 2.4 pM (Mn), 18.9 pM (Zn), 0.9 pM (Co), 41.1 pM (Ni), 0.7 pM (Cd), and 1.6 pM (Pb), respectively (3s of air blanks; Table S1).</p>
<p><strong>Dissolved Cu and Fe speciation</strong><br />
Filtered (&lt;0.2 µm, Pall Acropak) samples were collected for dissolved Fe-binding and Cu-binding organic ligands in 500 mL fluorinated high-density polyethylene (FPE) bottles (Buck et al. 2012). These sample bottles were cleaned by soaking in a soap bath for at least one week, then in a 10% TMG HCl (1.2 M) bath for at least a month. Bottles were then rinsed at least 3-5 times with Milli-Q water (&gt;18.2 MΩ cm) and stored filled with Milli-Q until use. Prior to filling with sample, bottles were rinsed three times with sample and were stored frozen (-20°C) until analysis on land.</p>
<p>The concentrations and conditional stability constants of Cu- and Fe-binding organic ligands were measured using competitive ligand exchange adsorptive cathodic stripping voltammetry (CLE-AdCSV). The competitive ligand salicylaldoxime (SA; Sigma-Aldrich) was used to compete with natural ligands (Campos and van den Berg 1994; Rue and Bruland 1995). Measurements were made on a BioAnalytical Systems (BASi) controlled-growth mercury electrode interfaced with an Epsilon 2 analyzer (BASi). Final SA concentrations of 2 μM and 25 μM were used for Cu and Fe speciation measurements, respectively (Buck et al. 2012; Jacquot and Moffett 2015). Deposition times of 300 s and 90 s were used for Cu and Fe speciation, respectively.</p>
<p>The full details of the Fe and Cu speciation methods and theory may be found elsewhere (Campos and van den Berg 1994; Rue and Bruland 1995; Buck et al. 2012, 2018). Briefly, for each titration, aliquots of 10 mL were distributed into fifteen lidded Teflon vials (Savillex), which had previously been conditioned with Milli-Q, borate buffer, metal additions, and SA prior to use. Each 10 mL aliquot was buffered to pH 8.2 (total scale) with a 1.5 M borate buffer (7.5 mM final concentration) made in 0.4 N ammonium hydroxide (Optima grade; Fisher) and cleaned for trace metals using Chelex resin. For Cu titrations, additions of 0–20 nM Cu were used and for Fe, additions of 0–10 nM Fe were used in separate vials. Metal additions were allowed to equilibrate overnight, and SA additions were equilibrated at least 1 h before analysis (Buck et al. 2012; Abualhaija and van den Berg 2014).</p>
<p>Titration data were processed using ProMCC software (Omanović et al. 2015; Pižeta et al. 2015), which fits the datasets using multiple regression models, both linear and non-linear. A single ligand class was found to be the best fit for the speciation data for both metals. Refer to Mellet &amp; Buck (2020) for full details.</p>
<p><strong>Electroactive Fe-binding humic-like substances</strong><br />
Remaining volume from the speciation samples used for the Fe- and Cu-binding ligand analyses was used for the quantification of naturally occurring electroactive Fe-binding humic-like substances (HS-like ligands). The measurements were made following the method of Laglera et al.(2007) as modified by Bundy et al. (2014). Briefly, a 10 mL sub-sample was amended with Fe (50 nM) to saturate any excess Fe-binding ligands present in the sample, buffered with 1.5 M borate buffer, and allowed to equilibrate for at least 2 hours. After equilibration, 20 mM potassium bromate oxidant was added and the electroactive response of the natural Fe-ligand complexes formed in the sample was measured on a Metrohm model 797 VA in direct current mode. Potential was scanned from -100 mV to -1100 mV with a deposition potential of -100 mV, and a deposition time between 60 s and 180 s depending on peak response. This approach directly detects any Fe-binding ligands in the samples that form electroactive complexes with Fe. Quantification of these electroactive Fe-binding ligands was made by method of standard additions of Suwannee River humic acid standard (SRHA; International Humic Substance Society) ranging from 0–60 mg L⁻¹ or 0–400 mg L⁻¹ (dependent on peak response). The concentrations of the electroactive Fe-binding ligands determined with this approach are thus described as Fe-binding HS-like ligands in the samples.</p>
Specified by the Principal Investigator(s)
<p><strong>Quality Flags:</strong><br />
The standard Ocean Data View qualifying flags were used (see: <a href="https://www.bodc.ac.uk/data/codes_and_formats/odv_format/" target="_blank">https://www.bodc.ac.uk/data/codes_and_formats/odv_format/</a>).<br />
1: Good Value: Good quality data value that is not part of any identified malfunction and has been verified as consistent with real phenomena during the quality control process.<br />
2: Probably Good Value: Data value that is probably consistent with real phenomena but this is unconfirmed or data value forming part of a malfunction that is considered too small to affect the overall quality of the data object of which it is a part.<br />
3: Probably Bad Value: Data value recognized as unusual during quality control that forms part of a feature that is probably inconsistent with real phenomena.<br />
4: Bad Value: An obviously erroneous data value.<br />
5: Changed Value: Data value adjusted during quality control.<br />
6: Value Below Detection Limit: The level of the measured phenomenon was too small to be quantified by the technique employed to measure it. The accompanying value is the detection limit for the technique or zero if that value is unknown.<br />
7: Value in Excess: The level of the measured phenomenon was too large to be quantified by the technique employed to measure it. The accompanying value is the measurement limit for the technique.<br />
8: Interpolated Value: This value has been derived by interpolation from other values in the data object.<br />
9: Missing Value: The data value is missing. Any accompanying value will be a magic number representing absent data.<br />
A: Value Phenomenon Uncertain: There is uncertainty in the description of the measured phenomenon associated with the value such as chemical species or biological entity.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- modified parameter names;<br />
- replaced "nda" with "nd" (no data);<br />
- replaced "&lt;LOD" with "BDL" (below detection limit);<br />
- added date/time column in ISO8601 format.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
BioAnalytical Systems (BASi) controlled-growth mercury electrode
BioAnalytical Systems (BASi) controlled-growth mercury electrode
PI Supplied Instrument Name: BioAnalytical Systems (BASi) controlled-growth mercury electrode Instrument Name: BASi Controlled Growth Mercury Electrode Instrument Short Name:BASI CGME Instrument Description: Bioanalytical Systems (BASi) Mercury drop electrodes are generated by the BASi Controlled Growth Mercury Electrode (CGME) in three modes:
DME (Dropping Mercury Electrode) - mercury is allowed to flow freely from the reservoir down the capillary and so the growth of the mercury drop and its lifetime is controlled by gravity. (The optional 100 um capillary is recommended for this mode.)
SMDE (Static Mercury Drop Electrode) - the drop size is determined by the length of time for which the fast-response capillary valve is opened, and the drop is dislodged by a drop knocker. The dispense/knock timing is microprocessor-controlled and is typically coordinated with the potential pulse or square-wave waveform. This mode can also used to generate the Hanging Mercury Drop Electrode required for stripping experiments.
CGME (Controlled Growth Mercury Electrode) - the mercury drop is grown by a series of pulses that open the capillary valve. The number of pulses, their duration, and their frequency can be varied by PC control, providing great flexibility in both the drop size and its rate of growth. This CGME mode can be used for both polarographic and stripping experiments.
http://www.basinc.com/products/ec/cgme.php
Epsilon 2 analyzer (BASi)
Epsilon 2 analyzer (BASi)
PI Supplied Instrument Name: Epsilon 2 analyzer (BASi) Instrument Name: BASi EC-epsilon 2 Autoanalyzer Instrument Short Name:BASi EC-epsilon 2 Instrument Description: The Bioanalytical Systems EC epsilon is a family of potentiostat/galvanostats for electrochemistry. The most basic epsilon instrument can be used for standard techniques, as well as chronopotentiometry for materials characterization (e.g., characterization of transition metal complexes by cyclic voltammetry and controlled potential electrolysis, or of biosensors by cyclic voltammetry and constant potential amperometry). Pulse, square wave, and stripping techniques can be added by a software upgrade, and a second channel can be added by a hardware upgrade.
Element XR Inductively Coupled Plasma Mass Spectrophotometer
Element XR Inductively Coupled Plasma Mass Spectrophotometer
PI Supplied Instrument Name: Element XR Inductively Coupled Plasma Mass Spectrophotometer Instrument Name: Inductively Coupled Plasma Mass Spectrometer Instrument Short Name:ICP Mass Spec Instrument Description: An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/
SeaFAST pico
SeaFAST pico
PI Supplied Instrument Name: SeaFAST pico Instrument Name: SeaFAST Automated Preconcentration System Instrument Short Name: Instrument Description: The seaFAST is an automated sample introduction system for analysis of seawater and other high matrix samples for analyses by ICPMS (Inductively Coupled Plasma Mass Spectrometry).
Metrohm model 797 VA
Metrohm model 797 VA
PI Supplied Instrument Name: Metrohm model 797 VA Instrument Name: Voltammetry Analyzers Instrument Short Name:Voltammetry Analyzers Instrument Description: Instruments that obtain information about an analyte by applying a potential and measuring the current produced in the analyte. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB35/
Cruise: WB1513
WB1513
Community Standard Description
International Council for the Exploration of the Sea
R/V Weatherbird II
vessel
Cruise: HO-1807
HO-1807
R/V W.T. Hogarth
Community Standard Description
International Council for the Exploration of the Sea
R/V W.T. Hogarth
vessel
Community Standard Description
International Council for the Exploration of the Sea
R/V Weatherbird II
vessel
R/V W.T. Hogarth
Community Standard Description
International Council for the Exploration of the Sea
R/V W.T. Hogarth
vessel