http://lod.bco-dmo.org/id/dataset/914491
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
2023-11-06
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Consensus Reference Material Collection Data of marine dissolved organic matter collected in the Florida Strait between 2019 and 2023
2023-12-22
publication
2023-12-22
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2023-12-22
publication
https://doi.org/10.26008/1912/bco-dmo.914491.1
Dennis Hansell
University of Miami
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: Hansell, D. (2023) Consensus Reference Material Collection Data of marine dissolved organic matter collected in the Florida Strait between 2019 and 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-12-22 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.914491.1 [access date]
Dissolved organic matter reference material Dataset Description: Methods and Sampling: <p>The seawater is collected by Niskin bottles mounted on a CTD&nbsp; rosette.&nbsp; Upon recovery to the ship's deck, the water is transferred to pre-cleaned 20 L carboys through silicone tubing, directly from the Niskin bottle sample valve to a bulkhead fitted carboy cap.&nbsp; Transfer takes only a few minutes through one of the larger sampling valves.&nbsp; These steps have proven contamination-free.</p>
<p>The sealed carboys are returned to the shore laboratory immediately after collection, acidified with blank-checked, ultra-pure hydrochloric acid (2 ml HCl per liter of water).&nbsp; The water is tested at each transfer step to ensure absence of contamination.&nbsp; Pre-combusted vials are filled from a silicone tube attached to the carboy valve.&nbsp; The other end of the silicone tube is attached to a clean, long-nosed pipette.&nbsp; The pipette tip is placed cleanly and without flow at the bottom of the vial, and then the flow is started. &nbsp;</p>
<p>Low carbon water is generated in a Milli-Q A10 system. The system reduces DOC in deionized water to very low levels by utilizing high intensity, multi-wavelength (185 and 284 nm) UV light.&nbsp; Specifications call for the unit to generate water with a DOC content of &lt;0.4 µM C (&lt;5 ppb).&nbsp; The water is homogenized, acidified and distributed from a clean carboy as described above. &nbsp;</p>
<p>During vial filling, we randomly but regularly remove vials for immediate analysis to evaluate for contamination.&nbsp; Evaluation of these subsets ensures that there is little variability between batches of material prepared on different days.&nbsp; The volumes (20 and 40 ml) are suitable for DOC analyses by direct injection (normally 100 µl) into high temperature combustions systems and by chemical or photo-oxidation techniques. &nbsp;</p>
<p>Reference Material Consensus – Consensus on the concentration of organic carbon in the deep sea reference water is performed by a group of independent expert laboratories.&nbsp; We maintain a pool of 4-6 labs for each assessment.&nbsp; The CRM program is intended to run for several years, but the longevity of any one laboratory may not be that long.&nbsp; A group of 4-6 certification labs allows for loss of one or two labs, and replacement by other labs, while maintaining continuity over the years.&nbsp; Currently, the laboratories of Craig Carlson, Dennis Hansell, Hiroshi Ogawa, Elizabeth Minor, Chiara Santinelli and Rainer Amon provide the service.</p>
<p>Shortly after batch preparation, and upon successful reanalysis of the CRM’s by our laboratory, each expert/consensus laboratory receives 10-20 samples of the low carbon water (LCW) and of reference seawaters.&nbsp;&nbsp; Analyses of the concentration of DOC in the seawater is relative to the LCW, with each laboratory using its own standards and calibration procedures.&nbsp; The value presently assigned to the LCW is 1 µM. &nbsp;</p>
<p>CRM Storage and Distribution - The newly prepared samples are stored in the dark at room temperature.&nbsp; Samples are not frozen because it is unnecessary, because we wish to avoid alternating freezing/thawing/freezing cycles likely for the more remote recipients of the material, and because freezing weakens (through expansion of the water) the integrity of the glass vial walls. &nbsp;</p>
<p>Shipment to the users is by ‘overnight’ delivery in shock-protected boxes.&nbsp; Shipping costs are borne by the participating laboratory unless special circumstances make such payments (and, therefore, participation in the program) difficult.&nbsp; For example, some laboratories in less developed countries may not be able to afford the shipping costs.&nbsp; We find ways to keep such laboratories in the program.</p>
<p>CRM Stability - Our experience is that changes in DOC have not been seen for either the seawater or the LCW on the time frame of at least 2 years.&nbsp; It could be, however, that the samples undergo change on longer time scales, perhaps due to absorption of DOM onto the glass walls.&nbsp; At the time of distribution, we assign shelf lives of 1 year to the reference material.&nbsp;&nbsp;</p>
<p>CRM Use - We distribute a document describing the appropriate handling of reference materials received by the participating laboratories.&nbsp; In it, the purpose of the reference materials, a description of the material distributed, the recommended protocols for handling the materials, cautions, and appropriate statistical tools for evaluating results are listed.&nbsp;&nbsp;&nbsp; &nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1844886 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1844886
completed
Dennis Hansell
University of Miami
305-421-4078
Coral Gables
FL
33124
USA
dhansell@miami.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise_ID
Collection_Date
Latitude
Longitude
Batch_ID
Designations
Sampling_Depths
DOC_Conc_uM_Min
DOC_Conc_uM_Max
TDN_Conc_uM_Min
TDN_Conc_uM_Max
Ship
Ship_Data
theme
None, User defined
Cruise identfier
date
latitude
longitude
sample description
dissolved organic Carbon
Total Dissolved Nitrogen
ship
DOI
featureType
BCO-DMO Standard Parameters
Shimadzu TOC-L Analyzer
instrument
BCO-DMO Standard Instruments
WS19080
WS19302
WS20226
WS21315
WS21103
WS22283
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.
Preparation and Distribution of DOC Consensus Reference Materials
https://hansell-lab.rsmas.miami.edu/consensus-reference-material/index.html
Preparation and Distribution of DOC Consensus Reference Materials
<p>NSF Award Abstract:</p>
<p>Dissolved organic carbon (DOC) in the ocean is part of the global carbon cycle. DOC interacts with the Earth's climate system through its connection to carbon dioxide in the atmosphere. Keeping track of DOC requires the cooperation of many marine laboratories worldwide. Making sure that all of these laboratories are making accurate DOC measurements requires that each can access a standardized sample of seawater for which the DOC concentration is set by international agreement. This award funds the University of Miami to continue a consensus reference material (CRM) program that was first developed in 1998 in support of consistent, high quality measurements of dissolved organic carbon by the international ocean chemistry community. With continuation of this work, the US and international communities can make consistent measurements of a major marine carbon reservoir and advance society's ability to assess changes in the marine carbon cycle and the role of the ocean in climate change.</p>
<p>With continued strong international efforts to investigate the marine carbon cycle, the existing CRM program provides the necessary benchmark for globally comparable marine DOC measurements. Water from the deep Florida Strait (approximately 42 umol/kg DOC) will be collected, placed in ampoules, and distributed to the US and international community. Over the time period of this program, approximately 228,000 vials of reference waters have been distributed to approximately 240 US and international laboratories in 43 nations, currently at a rate of about 23,000 vials/year. With continuation of the reference material program for a seventh 3-year period of support, distribution of deep ocean water containing biologically refractory dissolved organic carbon and low carbon reference water will continue to aid the analytical work of the community studying dissolved organic matter in the ocean. A website is maintained that provides direct and convenient links to a growing number of DOC data collected from the global ocean.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
DOC-CRM
largerWorkCitation
project
eng; USA
oceans
-79.9
-79.9
25.5
25.5
2019-03-19
2023-02-16
University of Miami, Florida, USA
0
BCO-DMO catalogue of parameters from Consensus Reference Material Collection Data of marine dissolved organic matter collected in the Florida Strait between 2019 and 2023
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/917610.rdf
Name: Cruise_ID
Units: unitless
Description: <p>Cruise ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/917611.rdf
Name: Collection_Date
Units: unitless
Description: <p>Collection Date</p>
http://lod.bco-dmo.org/id/dataset-parameter/917612.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample, south is negatice</p>
http://lod.bco-dmo.org/id/dataset-parameter/917613.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample, west is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/917614.rdf
Name: Batch_ID
Units: unitless
Description: <p>Batch ID</p>
http://lod.bco-dmo.org/id/dataset-parameter/917615.rdf
Name: Designations
Units: unitless
Description: <p>Sample description</p>
http://lod.bco-dmo.org/id/dataset-parameter/917616.rdf
Name: Sampling_Depths
Units: unitless
Description: <p>Sampling depth: DSR (deep seawater reference, 700m), MSR (mid depth seawater reference, 150m) or SSR (surface seawater reference, 5m)</p>
http://lod.bco-dmo.org/id/dataset-parameter/917617.rdf
Name: DOC_Conc_uM_Min
Units: micromoles carbon per liter (uM/L)
Description: <p>The minimum value of dissolved organic carbon (DOC) concentrations. Analytical precision is roughly 1 micromoles carbon per liter, but the data are provided as a range here. The concentrations of the reference waters are determined by a group of expert laboratories, so it is their range of results that we report. There is not an analytical method and result that is certifiable to a NIST standard, hence the need for the consensus values provided to the user community.</p>
http://lod.bco-dmo.org/id/dataset-parameter/917618.rdf
Name: DOC_Conc_uM_Max
Units: micromoles carbon per liter (uM/L)
Description: <p>The maximum value of dissolved organic carbon (DOC) concentrations. Analytical precision is roughly 1 micromoles carbon per liter, but the data are provided as a range here. The concentrations of the reference waters are determined by a group of expert laboratories, so it is their range of results that we report. There is not an analytical method and result that is certifiable to a NIST standard, hence the need for the consensus values provided to the user community.</p>
http://lod.bco-dmo.org/id/dataset-parameter/917619.rdf
Name: TDN_Conc_uM_Min
Units: micromoles nitrogen per liter (uM/L)
Description: <p>The minimum value of total dissolved nitrogen (TDN) concentrations. Reported similarly to the DOC values as described above but with units of micromoles nitrogen per liter. The precision is roughly 0.5 micromoles nitrogen per liter.</p>
http://lod.bco-dmo.org/id/dataset-parameter/917620.rdf
Name: TDN_Conc_uM_Max
Units: micromoles nitrogen per liter (uM/L)
Description: <p>The maximum value of total dissolved nitrogen (TDN) concentrations. Reported similarly to the DOC values as described above but with units of micromoles nitrogen per liter. The precision is roughly 0.5 micromoles nitrogen per liter.</p>
http://lod.bco-dmo.org/id/dataset-parameter/917621.rdf
Name: Ship
Units: unitless
Description: <p>Ship name</p>
http://lod.bco-dmo.org/id/dataset-parameter/917622.rdf
Name: Ship_Data
Units: unitless
Description: <p>DOI number for shipboard data archived at R2R</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
2638
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/0ddf5777-d28b-4d33-834b-6383ddfbe359/content
download
https://doi.org/10.26008/1912/bco-dmo.914491.1
download
onLine
dataset
<p>The seawater is collected by Niskin bottles mounted on a CTD&nbsp; rosette.&nbsp; Upon recovery to the ship's deck, the water is transferred to pre-cleaned 20 L carboys through silicone tubing, directly from the Niskin bottle sample valve to a bulkhead fitted carboy cap.&nbsp; Transfer takes only a few minutes through one of the larger sampling valves.&nbsp; These steps have proven contamination-free.</p>
<p>The sealed carboys are returned to the shore laboratory immediately after collection, acidified with blank-checked, ultra-pure hydrochloric acid (2 ml HCl per liter of water).&nbsp; The water is tested at each transfer step to ensure absence of contamination.&nbsp; Pre-combusted vials are filled from a silicone tube attached to the carboy valve.&nbsp; The other end of the silicone tube is attached to a clean, long-nosed pipette.&nbsp; The pipette tip is placed cleanly and without flow at the bottom of the vial, and then the flow is started. &nbsp;</p>
<p>Low carbon water is generated in a Milli-Q A10 system. The system reduces DOC in deionized water to very low levels by utilizing high intensity, multi-wavelength (185 and 284 nm) UV light.&nbsp; Specifications call for the unit to generate water with a DOC content of &lt;0.4 µM C (&lt;5 ppb).&nbsp; The water is homogenized, acidified and distributed from a clean carboy as described above. &nbsp;</p>
<p>During vial filling, we randomly but regularly remove vials for immediate analysis to evaluate for contamination.&nbsp; Evaluation of these subsets ensures that there is little variability between batches of material prepared on different days.&nbsp; The volumes (20 and 40 ml) are suitable for DOC analyses by direct injection (normally 100 µl) into high temperature combustions systems and by chemical or photo-oxidation techniques. &nbsp;</p>
<p>Reference Material Consensus – Consensus on the concentration of organic carbon in the deep sea reference water is performed by a group of independent expert laboratories.&nbsp; We maintain a pool of 4-6 labs for each assessment.&nbsp; The CRM program is intended to run for several years, but the longevity of any one laboratory may not be that long.&nbsp; A group of 4-6 certification labs allows for loss of one or two labs, and replacement by other labs, while maintaining continuity over the years.&nbsp; Currently, the laboratories of Craig Carlson, Dennis Hansell, Hiroshi Ogawa, Elizabeth Minor, Chiara Santinelli and Rainer Amon provide the service.</p>
<p>Shortly after batch preparation, and upon successful reanalysis of the CRM’s by our laboratory, each expert/consensus laboratory receives 10-20 samples of the low carbon water (LCW) and of reference seawaters.&nbsp;&nbsp; Analyses of the concentration of DOC in the seawater is relative to the LCW, with each laboratory using its own standards and calibration procedures.&nbsp; The value presently assigned to the LCW is 1 µM. &nbsp;</p>
<p>CRM Storage and Distribution - The newly prepared samples are stored in the dark at room temperature.&nbsp; Samples are not frozen because it is unnecessary, because we wish to avoid alternating freezing/thawing/freezing cycles likely for the more remote recipients of the material, and because freezing weakens (through expansion of the water) the integrity of the glass vial walls. &nbsp;</p>
<p>Shipment to the users is by ‘overnight’ delivery in shock-protected boxes.&nbsp; Shipping costs are borne by the participating laboratory unless special circumstances make such payments (and, therefore, participation in the program) difficult.&nbsp; For example, some laboratories in less developed countries may not be able to afford the shipping costs.&nbsp; We find ways to keep such laboratories in the program.</p>
<p>CRM Stability - Our experience is that changes in DOC have not been seen for either the seawater or the LCW on the time frame of at least 2 years.&nbsp; It could be, however, that the samples undergo change on longer time scales, perhaps due to absorption of DOM onto the glass walls.&nbsp; At the time of distribution, we assign shelf lives of 1 year to the reference material.&nbsp;&nbsp;</p>
<p>CRM Use - We distribute a document describing the appropriate handling of reference materials received by the participating laboratories.&nbsp; In it, the purpose of the reference materials, a description of the material distributed, the recommended protocols for handling the materials, cautions, and appropriate statistical tools for evaluating results are listed.&nbsp;&nbsp;&nbsp; &nbsp;</p>
Specified by the Principal Investigator(s)
<p>DOC analysis is performed by a high temperature combustion method using a Shimadzu Model TOC-L.&nbsp; The system configuration and operating parameters are as follows:&nbsp; Ultra high purity O2 is used as a carrier gas, flowing through the system at 150 ml min-1.&nbsp; 100 µl of sample is injected with automation through a Teflon/sliding injection port into a quartz combustion tube packed with Pt gauze and 5% Pt on alumina catalyst heated to 680°C.&nbsp; Samples are acidified with 37% HCl (15 µl per 10 ml of sample; 0.15%) and, immediately prior to injection, sparged with ultra-high purity, CO2 free oxygen for 1.5 minutes to remove inorganic carbon.&nbsp; Samples are combusted in the furnace and the resulting gas passed through water traps and a final copper halide trap before entering the detector. &nbsp;<br />
<br />
To minimize the system blank, conditioning of the combustion tube is required prior to analysis of samples.&nbsp; Conditioning is performed through repeated injections of Milli-Q water and/or seawater.&nbsp; After conditioning, the system blank is assessed with LCW. Typical relative standard deviations of replicate TOC analyses are 2%. The instrument response factor is determined with potassium hydrogen phthalate in Milli-Q® water (0, 40, 80, 160 uM C).&nbsp; The instrument blank is measured every 4-6 samples using LCW.</p>
<p>The TDN content of seawater is similarly defined as the concentration of combined nitrogen remaining in a seawater sample after particulate nitrogen has been removed. TDN is determined via the high temperature combustion method with Shimadzu TOC analyzer attached to a Shimadzu TNM analyzer. Combined dissolved nitrogen in the sample is converted to nitric oxide (NO). The resulting gas stream is then passed through the Shimadzu internal electronic dehumidifier, a copper mesh halide trap, a 0.45 µm filter, and into the chemiluminescence analyzer, where the dried NO gas reacts with O3 to produce an excited nitrous oxide. The resulting fluorescence signal is detected by the Shimadzu TNM chemiluminescence detector. The resulting peak area is integrated with Shimadzu chromatographic software.</p>
<p>The full analytical protocol is described in Halewood et al. 2022.</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
PI Supplied Instrument Name: PI Supplied Instrument Description:DOC analysis is performed by a high temperature combustion method using a Shimadzu Model TOC-L. See methods section for complete description of the system configuration as well as Halewood et al., 2022 for the full analytical protocol. Instrument Name: Shimadzu TOC-L Analyzer Instrument Short Name:Shimadzu TOC-L Instrument Description: A Shimadzu TOC-L Analyzer measures DOC by high temperature combustion method.
Developed by Shimadzu, the 680 degree C combustion catalytic oxidation method is now used worldwide. One of its most important features is the capacity to efficiently oxidize hard-to-decompose organic compounds, including insoluble and macromolecular organic compounds. The 680 degree C combustion catalytic oxidation method has been adopted for the TOC-L series.
http://www.shimadzu.com/an/toc/lab/toc-l2.html Community Standard Description: http://onto.nerc.ac.uk/CAST/124.html
Cruise: WS19080
WS19080
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel
WS19080
Lillian Custals
University of Miami
Cruise: WS19302
WS19302
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel
WS19302
Lillian Custals
University of Miami
Cruise: WS20226
WS20226
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel
WS20226
Lillian Custals
University of Miami
Cruise: WS21315
WS21315
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel
WS21315
Lillian Custals
University of Miami
Cruise: WS21103
WS21103
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel
WS21103
Lillian Custals
University of Miami
Cruise: WS22283
WS22283
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel
WS22283
Dennis Hansell
University of Miami
R/V F.G. Walton Smith
Community Standard Description
International Council for the Exploration of the Sea
R/V F.G. Walton Smith
vessel