http://lod.bco-dmo.org/id/dataset/647250
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
2016-05-23
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved cobalt concentrations measured by cathodic stripping voltammetry from the MetZyme cruise KM1128 on R/V Kilo Moana in October 2011
2020-12-03
publication
2020-12-03
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-03-17
publication
https://doi.org/10.26008/1912/bco-dmo.647250.4
Mak A. Saito
Woods Hole Oceanographic Institution
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: Saito, M. A. (2021) Dissolved cobalt concentrations measured by cathodic stripping voltammetry from the MetZyme cruise KM1128 on R/V Kilo Moana in October 2011. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 4) Version Date 2020-12-03 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.647250.4 [access date]
Dissolved cobalt concentrations measured by cathodic stripping voltammetry from the MetZyme cruise. Dataset Description: <p>This dataset includes dissolved cobalt concentrations measured by cathodic stripping voltammetry. Samples were collected during the KM1128 METZYME research expedition (Metals and Enzymes in the Pacific) on the R/V Kilo Moana October 1-25, 2011 from Oahu, Hawaii to Apia, Samoa.</p> Methods and Sampling: <p>Samples were collected during the KM1128 METZYME research expedition (Metals and Enzymes in the Pacific) on the R/V Kilo Moana October 1-25, 2011 from Oahu, Hawaii to Apia, Samoa, with Carl Lamborg and Mak Saito as Chief Scientists.</p>
<p>Dissolved trace metal samples were collected by an internally programmed standard SBE Rosette (Seabird Electronics Inc.) user-modified to serve as a trace metal clean system with 24 8 L X-Niskin bottles (Ocean Test Equipment), 12 X-Niskin bottles were attached to the rosette per deployment) with minimal exposed metal surfaces using 5000 m of non-metallic non-conducting line. Temperature, oxygen, and conductivity sensor data were collected using a SBE19plus V2 system (Seabird Electronics Inc.) attached to a CTD extension stand on the Trace Metal Rosette. All sensors were factory calibrated immediately prior to the expedition. X-Niskins were pressurized with ultra-high purity nitrogen gas and seawater was filtered through cleaned 47 mm 0.2 micron Supor membrane filters within a HEPA filtered cleanroom space aboard the ship. The volume filtered was calculated (X-Niskin volume minus small unfiltered samples) and the filters were stored in cleaned tubes and frozen for particulate metal analysis (see below). Acid-washed 60 mL LDPE bottles were filled entirely, leaving no headspace. Samples were stored at preserved in a heat-sealed bag containing gas absorbing satchels immediately after sample collection and kept at 4C until analysis in lab.</p>
<p>Sample storage and reagent bottles were soaked for &gt;1 week in the acidic detergent Citranox, rinsed thoroughly with 18.2 M-Ohm Milli-Q water (Millipore), filled with 10% HCl to soak for 10 days, and rinsed thoroughly with Milli-Q water adjusted to pH 2 with TM-grade HCl. Reagent purification protocols were identical to those previously published (Saito and Moffett 2001).</p>
<p>Concentrations of total dissolved 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. Sample preparation was modified slightly to accommodate use of a Metrohm 837 Sample processor, operated with NOVA 1.8 software (Metrohm Autolab B.V.).</p>
<p>For dissolved cobalt analyses, samples were UV-irradiated for 1 h prior to analysis in a Metrohm 705 UV digester to degrade the organic ligands that bind cobalt, enabling full chelation by the added electroactive ligand, dimethylglyoxime (DMG). 11 ml of sample was pipetted into 15ml polypropylene tubes. Recrystallized DMG (0.1M in methanol) was added to a final concertation of 400 uM and purified N-(2-hydroxyethyl)piperazine-N-(3-propanesulfonic acid) (EPPS) buffer (0.5 M in Milli-Q water) was added to a final concentration of 3.8 mM. Tubes were inverted several times before being placed in the autosampler queue, where 8.5 ml of the mixture was dosed into the teflon analysis cup using a 800 Dosino automated burrette (Metrohm). 1.5 ml of purified sodium nitrite (1.5M in Milli-Q water) was added directly to the Teflon cup using a dedicated 800 Dosino burrette. Once loaded, samples were purged with high purity (&gt;99.99%) N2 for 3 min and cobalt concentrations were determined by standard addition, with triplicate measurement of the sample followed by four 25 pM cobalt additions. 5 nM Co stock was diluted from a certified 1ppm reference (SPEX) and added to the analysis cup via a third Dosino burrette.</p>
<p>The analytical blank was determined by analyzing seawater that had been UV-irradiated for 1 h, equilibrated overnight with prepared Chelex 100 resin beads (Bio-Rad), and UV-irradiated a second time to degrade any leached synthetic ligands. Mean blank was 4.6 +/- 0.7 pM, and the detection limit was calculated as triple the standard deviation of the blank, 2.1 pM. A portion of this dataset was published previously in Saito et al. 2014; the blank for those samples was 3.5 pM.</p>
<p>The Saito laboratory has participated in the GEOTRACES intercalibration effort using this electrochemical Co method. Acidified standards were neutralized with concentrated ammonium hydroxide (Seastar), mixing the entire sample between drops, prior to UV digestion. We report our laboratory values for the GEOTRACES and SAFe standard analyses using this electrochemical method, including those conducted during analysis of the EPZT samples to be:<br />
SAFe D1 = 48.5 +/- 2.4 (n=3, at sea),<br />
SAFe D2 = 45.0 +/- 2.7 (n=7),<br />
GEOTRACES GSP = 2.5 +/- 2.0 (n=10),<br />
GEOTRACES GSC = 77.7 +/- 2.4 (n=4).</p>
<p>These results are in good agreement with those from the GEOTRACES intercalibration effort for Co and demonstrate that the methodologies employed to produce this dataset detect concentrations within the standard deviation of current consensus values for UV irradiated samples, which can be found on the <a href="http://www.geotraces.org/" target="_blank">International GEOTRACES Program website</a></p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1031271 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1031271
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1337780 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1337780
Funding provided by Gordon and Betty Moore Foundation: Marine Microbiology Initiative (MMI) Award Number: GBMF3934
Funding provided by Gordon and Betty Moore Foundation: Marine Microbiology Initiative (MMI) Award Number: GBMF3782 Award URL: https://www.moore.org/grant-detail?grantId=GBMF3782
completed
Mak A. Saito
Woods Hole Oceanographic Institution
508-289-2393
266 Woods Hole Rd. MS #51 Watson Lab
Woods Hole
MA
02543
USA
msaito@whoi.edu
pointOfContact
asNeeded
Dataset Version: 4
Unknown
Station_ID
Start_Date_UTC
Start_Time_UTC
Start_ISO_DateTime_UTC
End_Date_UTC
End_Time_UTC
End_ISO_DateTime_UTC
Start_Longitude
Start_Latitude
End_Longitude
End_Latitude
CAST_ID
Event_ID
Sample_ID
Sample_Depth
Co_D_CONC_BOTTLE_dbqxwt
SD1_Co_D_CONC_BOTTLE_dbqxwt
Flag_Co_D_CONC_BOTTLE_dbqxwt
SBE19plusV2
Metrohm 663 VA Stands
X-Niskin bottles (Ocean Test Equipment)
Eco-Chemie µAutolabIII
theme
None, User defined
station
date
time of day
ISO_DateTime_UTC
longitude
latitude
cast
event
sample identification
depth
Cobalt
quality flag
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird SBE SEACAT 19plus
Metrohm 663 VA Stand mercury electrode
Niskin bottle
Voltammetry Analyzers
instrument
BCO-DMO Standard Instruments
KM1128
service
Deployment Activity
tropical North Pacific along 150 degrees West from 18 degrees North to the equator
place
Locations
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.
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
Connecting Trace Elements and Metalloenzymes Across Marine Biogeochemical Gradients (GPc03)
https://osprey.bco-dmo.org/project/2236
Connecting Trace Elements and Metalloenzymes Across Marine Biogeochemical Gradients (GPc03)
<p>MetZyme project researchers will determine the role of enzymatic activity in the cycling of trace metals. Specifically the research will address the following questions: (1) degradation of sinking particulate organic material in the Tropical North Pacific can be influenced by the ability of microbes to synthesize zinc proteases, which in turn is controlled by the abundance or availability of zinc, and (2) methylation of mercury is controlled, in part, by the activity of cobalt-containing enzymes, and therefore the supply of labile cobalt to the corrinoid-containing enzymes or co-factors responsible for methylation. To attain their goal, they will collect dissolved and particulate samples for trace metals and metalloenzymes from three stations along a biogeochemical gradient in the Tropical North Pacific (along 150 degrees West from 18 degrees North to the equator). Sinking particles from metal clean sediment traps will also be obtained. The samples will also be used to carry out shipboard incubation experiments using amendments of metals, metal-chelators, B12, and proteases to examine the sensitivity and metal limitation of heterotrophic, enzymatic degradation of organic matter within the oceanic "Twilight Zone" (100-500 m). This study will result in a novel metaproteomic/metalloenzyme datasets that should provide insights into the biogeochemical cycling of metals, as well as co-limitation of primary productivity and controls on the export of carbon from the photic zone. In addition to the final data being contributed to BCO-DMO, an online metaproteomic data server will be created so the community has access to the raw data files generated by this research.</p>
MetZyme
largerWorkCitation
project
eng; USA
oceans
tropical North Pacific along 150 degrees West from 18 degrees North to the equator
-174.5
-154.5
-15
17
2011-10-03
2011-10-24
Tropical North Pacific along 150 degrees West from 18 degrees North to the equator
0
BCO-DMO catalogue of parameters from Dissolved cobalt concentrations measured by cathodic stripping voltammetry from the MetZyme cruise KM1128 on R/V Kilo Moana in October 2011
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/831478.rdf
Name: Station_ID
Units: unitless
Description: <p>Station identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/831479.rdf
Name: Start_Date_UTC
Units: unitless
Description: <p>Date at start of sample collection; format: MM/DD/YYYY</p>
http://lod.bco-dmo.org/id/dataset-parameter/831480.rdf
Name: Start_Time_UTC
Units: unitless
Description: <p>Time (UTC) at start of sample collection; format: hh:mm:ssZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/831481.rdf
Name: Start_ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) at start of sample collection formatted to ISO8601 standard: YYYY-MM-DDThh:mm:ssZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/831482.rdf
Name: End_Date_UTC
Units: unitless
Description: <p>Date at end of sample collection; format: MM/DD/YYYY</p>
http://lod.bco-dmo.org/id/dataset-parameter/831483.rdf
Name: End_Time_UTC
Units: unitless
Description: <p>Time (UTC) at end of sample collection; format: hh:mm:ssZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/831484.rdf
Name: End_ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) at end of sample collection formatted to ISO8601 standard: YYYY-MM-DDThh:mm:ssZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/831485.rdf
Name: Start_Longitude
Units: degrees East
Description: <p>Longitude at start of event</p>
http://lod.bco-dmo.org/id/dataset-parameter/831486.rdf
Name: Start_Latitude
Units: degrees North
Description: <p>Latitude at start of event</p>
http://lod.bco-dmo.org/id/dataset-parameter/831487.rdf
Name: End_Longitude
Units: degrees East
Description: <p>Longitude at end of event</p>
http://lod.bco-dmo.org/id/dataset-parameter/831488.rdf
Name: End_Latitude
Units: degrees North
Description: <p>Latitude at end of event</p>
http://lod.bco-dmo.org/id/dataset-parameter/831489.rdf
Name: CAST_ID
Units: unitless
Description: <p>Cast identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/831490.rdf
Name: Event_ID
Units: unitless
Description: <p>BODC event ID number</p>
http://lod.bco-dmo.org/id/dataset-parameter/831491.rdf
Name: Sample_ID
Units: unitless
Description: <p>BODC bottle ID number</p>
http://lod.bco-dmo.org/id/dataset-parameter/831492.rdf
Name: Sample_Depth
Units: meters (m)
Description: <p>Sampling depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/831493.rdf
Name: Co_D_CONC_BOTTLE_dbqxwt
Units: picomoles per liter (pmol/L)
Description: <p>The total concentration of cobalt in a 0.22 um filtered sample, determined following a 1hr UV oxidation procedure that removes organic ligands.</p>
http://lod.bco-dmo.org/id/dataset-parameter/831494.rdf
Name: SD1_Co_D_CONC_BOTTLE_dbqxwt
Units: picomoles per liter (pmol/L)
Description: <p>One standard deviation of Co_D_CONC_BOTTLE_dbqxwt</p>
http://lod.bco-dmo.org/id/dataset-parameter/831495.rdf
Name: Flag_Co_D_CONC_BOTTLE_dbqxwt
Units: unitless
Description: <p>Quality flag for Co_D_CONC_BOTTLE_dbqxwt. Refer to 'Processing Description' section of metadata for flag definitions.</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
46618
https://darchive.mblwhoilibrary.org/bitstream/1912/26827/1/dataset-647250_dissolved-cobalt__v4.tsv
download
https://doi.org/10.26008/1912/bco-dmo.647250.4
download
onLine
dataset
<p>Samples were collected during the KM1128 METZYME research expedition (Metals and Enzymes in the Pacific) on the R/V Kilo Moana October 1-25, 2011 from Oahu, Hawaii to Apia, Samoa, with Carl Lamborg and Mak Saito as Chief Scientists.</p>
<p>Dissolved trace metal samples were collected by an internally programmed standard SBE Rosette (Seabird Electronics Inc.) user-modified to serve as a trace metal clean system with 24 8 L X-Niskin bottles (Ocean Test Equipment), 12 X-Niskin bottles were attached to the rosette per deployment) with minimal exposed metal surfaces using 5000 m of non-metallic non-conducting line. Temperature, oxygen, and conductivity sensor data were collected using a SBE19plus V2 system (Seabird Electronics Inc.) attached to a CTD extension stand on the Trace Metal Rosette. All sensors were factory calibrated immediately prior to the expedition. X-Niskins were pressurized with ultra-high purity nitrogen gas and seawater was filtered through cleaned 47 mm 0.2 micron Supor membrane filters within a HEPA filtered cleanroom space aboard the ship. The volume filtered was calculated (X-Niskin volume minus small unfiltered samples) and the filters were stored in cleaned tubes and frozen for particulate metal analysis (see below). Acid-washed 60 mL LDPE bottles were filled entirely, leaving no headspace. Samples were stored at preserved in a heat-sealed bag containing gas absorbing satchels immediately after sample collection and kept at 4C until analysis in lab.</p>
<p>Sample storage and reagent bottles were soaked for &gt;1 week in the acidic detergent Citranox, rinsed thoroughly with 18.2 M-Ohm Milli-Q water (Millipore), filled with 10% HCl to soak for 10 days, and rinsed thoroughly with Milli-Q water adjusted to pH 2 with TM-grade HCl. Reagent purification protocols were identical to those previously published (Saito and Moffett 2001).</p>
<p>Concentrations of total dissolved 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. Sample preparation was modified slightly to accommodate use of a Metrohm 837 Sample processor, operated with NOVA 1.8 software (Metrohm Autolab B.V.).</p>
<p>For dissolved cobalt analyses, samples were UV-irradiated for 1 h prior to analysis in a Metrohm 705 UV digester to degrade the organic ligands that bind cobalt, enabling full chelation by the added electroactive ligand, dimethylglyoxime (DMG). 11 ml of sample was pipetted into 15ml polypropylene tubes. Recrystallized DMG (0.1M in methanol) was added to a final concertation of 400 uM and purified N-(2-hydroxyethyl)piperazine-N-(3-propanesulfonic acid) (EPPS) buffer (0.5 M in Milli-Q water) was added to a final concentration of 3.8 mM. Tubes were inverted several times before being placed in the autosampler queue, where 8.5 ml of the mixture was dosed into the teflon analysis cup using a 800 Dosino automated burrette (Metrohm). 1.5 ml of purified sodium nitrite (1.5M in Milli-Q water) was added directly to the Teflon cup using a dedicated 800 Dosino burrette. Once loaded, samples were purged with high purity (&gt;99.99%) N2 for 3 min and cobalt concentrations were determined by standard addition, with triplicate measurement of the sample followed by four 25 pM cobalt additions. 5 nM Co stock was diluted from a certified 1ppm reference (SPEX) and added to the analysis cup via a third Dosino burrette.</p>
<p>The analytical blank was determined by analyzing seawater that had been UV-irradiated for 1 h, equilibrated overnight with prepared Chelex 100 resin beads (Bio-Rad), and UV-irradiated a second time to degrade any leached synthetic ligands. Mean blank was 4.6 +/- 0.7 pM, and the detection limit was calculated as triple the standard deviation of the blank, 2.1 pM. A portion of this dataset was published previously in Saito et al. 2014; the blank for those samples was 3.5 pM.</p>
<p>The Saito laboratory has participated in the GEOTRACES intercalibration effort using this electrochemical Co method. Acidified standards were neutralized with concentrated ammonium hydroxide (Seastar), mixing the entire sample between drops, prior to UV digestion. We report our laboratory values for the GEOTRACES and SAFe standard analyses using this electrochemical method, including those conducted during analysis of the EPZT samples to be:<br />
SAFe D1 = 48.5 +/- 2.4 (n=3, at sea),<br />
SAFe D2 = 45.0 +/- 2.7 (n=7),<br />
GEOTRACES GSP = 2.5 +/- 2.0 (n=10),<br />
GEOTRACES GSC = 77.7 +/- 2.4 (n=4).</p>
<p>These results are in good agreement with those from the GEOTRACES intercalibration effort for Co and demonstrate that the methodologies employed to produce this dataset detect concentrations within the standard deviation of current consensus values for UV irradiated samples, which can be found on the <a href="http://www.geotraces.org/" target="_blank">International GEOTRACES Program website</a></p>
Specified by the Principal Investigator(s)
<p>Peak height (in nA) was measured relative to a linear baseline for the Co reduction peak ca. -1.15V. All seven scans (3 baseline and 4 standard additions) were used to determine a sample specific sensitivity (nA/pM Co added, mean r² = 0.998). Cobalt concentrations were calculated from the baseline peak height, divided by the sensitivity and corrected from volume changes from sodium nitrite addition, followed by subtraction of the mean blank for at sea, or in lab analyses.</p>
<p>Analyses were characterized with mild electrical inference that required additional processing before peak height could be reliably measured. We adopted a simplified least squared fitting routine included in the NOVA software package that conducted a 15-point weighted moving average according to a second order polynomial. This method did not distort cobalt concentrations when noise was low.</p>
<p>On occasion, analyses were repeated due to obvious electrode malfunction or to confirm oceanographic consistency of measured values. If the repeated measurement was similar to the initial, the initial value is reported. If the repeated analysis was more oceanographically consistent with adjacent values in the water column, that analysis was used instead.</p>
<p><strong>Quality Flags:</strong><br />
Quality flags for dissolved Cobalt follow the SeaDataNet scheme (<a href="https://www.geotraces.org/geotraces-quality-flag-policy/" target="_blank">https://www.geotraces.org/geotraces-quality-flag-policy/</a>):<br />
1) Good value;<br />
2) Probably Good Value;<br />
3) Probably Bad Value;<br />
6) Value Below detection;<br />
9) Missing Value.</p>
<p>The most common reason for a Quality flag of 2 was a lower than normal r² of standard additions (0.98 &lt; r² &lt;0.99) or a moderate difference in replicate analyses (order 10 pM). Quality Flags of 3 were assigned based on poor r² of standard addition, disagreement between triplicate baseline scans, or lack of oceanographic consistency). Quality flags of 6 were assigned for values below 3 pmol/L.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- modified parameter names.<br />
- replaced blanks (missing data) with "nd" ("no data").<br />
- 2016-06-30 (v2) - corrected typo in one station number per request from PI.<br />
- 2017-08-01 (v3) -&nbsp;un-restricted the full dataset and made corrections to the time values in stations 5 and 10.<br />
- 2020-12-03 (v4; current) - replaced with GEOTRACES DOoR-formatted version.</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
SBE19plusV2
SBE19plusV2
PI Supplied Instrument Name: SBE19plusV2 PI Supplied Instrument Description:Temperature, oxygen and conductivity sensor data were collected using a SBE19plusV2 system (Seabird Electronics Inc.) attached to a CTD extension stand on the Trace Metal Rosette. Instrument Name: CTD Sea-Bird SBE SEACAT 19plus Instrument Short Name:Sea-Bird SEACAT 19 Plus Instrument Description: Self contained self powered CTD profiler. Measures conductivity, temperature and pressure in both profiling (samples at 4 scans/sec) and moored (sample rates of once every 5 seconds to once every 9 hours) mode. Available in plastic or titanium housing with depth ranges of 600m and 7000m respectively. Minature submersible pump provides water to conductivity cell.
Metrohm 663 VA Stands
Metrohm 663 VA Stands
PI Supplied Instrument Name: Metrohm 663 VA Stands PI Supplied Instrument Description: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.). Instrument Name: Metrohm 663 VA Stand mercury electrode Instrument Short Name:Metrohm 663 VA Instrument 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. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0515/
X-Niskin bottles (Ocean Test Equipment)
X-Niskin bottles (Ocean Test Equipment)
PI Supplied Instrument Name: X-Niskin bottles (Ocean Test Equipment) PI Supplied Instrument Description:Dissolved trace metal samples were collected by an internally programmed standard SBE Rosette (Seabird Electronics Inc.) user-modified to serve as a trace metal clean system with 24 8 L X-Niskin bottles (Ocean Test Equipment). Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
Eco-Chemie µAutolabIII
Eco-Chemie µAutolabIII
PI Supplied Instrument Name: Eco-Chemie µAutolabIII PI Supplied Instrument Description: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.). 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: KM1128
KM1128
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM1128
Carl Lamborg
Woods Hole Oceanographic Institution
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel