http://lod.bco-dmo.org/id/dataset/865161
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
2021-11-17
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
New experimental constraints on the magnitude of kinetic C and O isotope fractionation for CO2 hydration
2021-11-17
publication
2021-11-17
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-11-30
publication
https://doi.org/10.26008/1912/bco-dmo.865161.1
Richard Zeebe
University of Hawai'i
principalInvestigator
Joji Uchikawa
University of Hawai'i
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: Zeebe, R., Uchikawa, J. (2021) New experimental constraints on the magnitude of kinetic C and O isotope fractionation for CO2 hydration. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-11-17 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.865161.1 [access date]
Experimental data on kinetic C and O isotope fractionation of CO2 hydration Dataset Description: Methods and Sampling: <p>We quasi-instantaneously precipitated BaCO<sub>3</sub> by bubbling CO<sub>2</sub> gas that was in full isotopic equilibrium with NaHCO<sub>3</sub> solution through highly concentrated BaCl<sub>2</sub> solutions buffered at alkaline pH. As the CO<sub>2</sub> gas entered the BaCl<sub>2</sub> solution through a fritted disk, a small fraction of it was transformed into HCO<sub>3</sub><sup>−</sup> via diffusion and hydration across the thin-film of the bubbles. The resultant HCO<sub>3</sub><sup>−</sup> immediately reacted with Ba<sup>2</sup>+ in the solution and precipitated as BaCO<sub>3</sub>. By measuring δ<sup>13</sup>C and δ<sup>18</sup>O values of the BaCO<sub>3</sub> samples and experimental NaHCO<sub>3</sub> and H<sub>2</sub>O and applying oxygen mass-balance, we constrained kinetic C and O isotope effect associated with the hydration of CO<sub>2</sub>.</p>
<p>All carbonate samples (BaCO<sub>3</sub> and NaHCO<sub>3</sub>) were analyzed at the University of California Santa Cruz for δ<sup>13</sup>C and δ<sup>18</sup>O, using a Thermo Finnigan MAT-253 dual-inlet isotope ratio monitoring mass spectrometer (irm-MS) coupled to a Kiel IV carbonate device. The samples were reacted with orthophosphoric acid and the resultant CO<sub>2</sub> gas was analyzed by the irm-MS. Note that all samples were treated as if they are calcite, which means that we did not apply the corrections to account for BaCO<sub>3</sub>-specific and NaHCO<sub>3</sub>-specific acid fractionation factor.</p>
<p>All H<sub>2</sub>O samples were analyzed for δ<sup>18</sup>O at the University of Hawaii on a PICARRO L2130-<em>i</em> isotope and gas concentration analyzer.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1558699 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1558699
completed
Richard Zeebe
University of Hawai'i
808-956-6473
1000 Pope Road Marine Sciences Building 504
Honolulu
HI
96822
USA
zeebe@hawaii.edu
pointOfContact
Joji Uchikawa
University of Hawai'i
100 Pope Rd.
Honolulu
HI
96822
USA
uchikawa@hawaii.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sample
T
pH
d13C
d13C_stdev
d18O
d18O_stdev
KIF13_CO2g_BaCO3
KIF13_CO2g_BaCO3_stdev
KIF18_CO2g_BaCO3
KIF18_CO2g_BaCO3_stdev
KIF18_Inst
KIF18_Inst_stdev
Thermo Finnigan MAT-253 dual-inlet isotope ratio monitoring mass spectrometer (irm-MS)
PICARRO L2130-i isotope and gas concentration analyzer
theme
None, User defined
sample identification
water temperature at measurement depth
pH
d13C
oxygen 16 to oxygen 18 ratio
No BCO-DMO term
featureType
BCO-DMO Standard Parameters
Isotope-ratio Mass Spectrometer
Picarro L2130-I deltaD/delta18O Isotopic Water Analyzer
instrument
BCO-DMO Standard Instruments
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.
Experimental study of CO2 hydration in seawater: Mechanism and kinetic isotope effects
https://osprey.bco-dmo.org/project/859504
Experimental study of CO2 hydration in seawater: Mechanism and kinetic isotope effects
<p><em>NSF Award Abstract:</em><br />
The chemical reaction of carbon dioxide (CO2) with water in the marine environment is a fundamental process that creates carbonic acid (H2CO3) and all of the associated chemical ions (carbonate (CO3); hydrogen ions (H+), and bicarbonate (HCO3-)) that serve as the dominant buffer for pH in the ocean. Dehydration refers to the opposite reaction that releases CO2 gas. By entering into important reactions and serving to control pH, these species govern a wide variety of chemical and biological processes in the ocean. Surprisingly, while the important reactions that involve CO2 hydration and its resulting products have been extensively studied in the ocean, some of the fundamental mechanisms remain poorly understood and datasets are sparse. In particular, almost nothing is known about how the natural isotopes of the carbon and oxygen atoms are involved and this is critically needed to explain observed changes in chemical species and solid calcium carbonate such as that created by coral reefs. This research aims to carefully produce novel experimental data that includes critical measurements of carbon and oxygen isotopes before and after the hydration of CO2 in the ocean. Because these resulting carbonate species are used widely in many studies in the ocean sciences, particularly those examining past climates, this research will have far-reaching influences. Additionally, the results will provide new fundamental insight on exactly how the ocean will take up and respond to changing concentrations of atmospheric CO2 in a changing climate. The research will fund an early-career scientist who is dedicated to graduate and undergraduate education as well as scientific outreach to the community.</p>
<p>While hydration/dehydration of CO2 in the ocean critically influences a variety of marine chemical and biological processes, there are certain aspects of the reaction that are poorly understood. The molecular mechanism is not yet clear, as there are two possible pathways that have been proposed. Additionally, kinetic isotope effects during CO2 have not been well studied, and the data regarding this topic is inconsistent. This research aims to study the carbon and oxygen isotope fractionation, which will not only clarify the molecular mechanism of the reaction but also will add a consistent dataset on kinetic isotope effects. The main challenge in this study is separating the product, HCO3-, from CO2 before re-equilibration, but the researcher will resolve this by rapidly precipitating dissolved carbon as carbonate. Since carbonates formed from the process of hydration are considered critical indicators of water chemistry, biological processes, and the inorganic carbon cycle as a whole and are used in a wide variety of oceanographic research, particularly as paleo-proxies, this research will provide fundamental mechanistic data that will greatly advance studies reaching beyond the physical chemical measurements that will be made here.</p>
CO2 Hydration Mechanism and KIEs
largerWorkCitation
project
eng; USA
oceans
2017-01-01
2019-12-31
University of Hawaii at Manoa
0
BCO-DMO catalogue of parameters from New experimental constraints on the magnitude of kinetic C and O isotope fractionation for CO2 hydration
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/865216.rdf
Name: Sample
Units: unitless
Description: <p>sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/865217.rdf
Name: T
Units: degrees Celsius
Description: <p>temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/865218.rdf
Name: pH
Units: unitless
Description: <p>pH (NBS)</p>
http://lod.bco-dmo.org/id/dataset-parameter/865219.rdf
Name: d13C
Units: per mil (‰)
Description: <p>delta 13C, VPDB</p>
http://lod.bco-dmo.org/id/dataset-parameter/865220.rdf
Name: d13C_stdev
Units: per mil (‰)
Description: <p>standard deviation of d13C</p>
http://lod.bco-dmo.org/id/dataset-parameter/865221.rdf
Name: d18O
Units: per mil (‰)
Description: <p>delta 18O, VSMOW</p>
http://lod.bco-dmo.org/id/dataset-parameter/865222.rdf
Name: d18O_stdev
Units: per mil (‰)
Description: <p>standard deviation of d18O</p>
http://lod.bco-dmo.org/id/dataset-parameter/865223.rdf
Name: KIF13_CO2g_BaCO3
Units: per mil (‰)
Description: <p>13KIFCO2(g)-BaCO3 refers to the 13C/12C fractionation between CO2(g) and BaCO3, where the d13C values of CO2(g) were calculated using known equilibrium fractionation factors</p>
http://lod.bco-dmo.org/id/dataset-parameter/865224.rdf
Name: KIF13_CO2g_BaCO3_stdev
Units: per mil (‰)
Description: <p>standard deviation of KIF13_CO2g_BaCO3</p>
http://lod.bco-dmo.org/id/dataset-parameter/865225.rdf
Name: KIF18_CO2g_BaCO3
Units: per mil (‰)
Description: <p>18KIFCO2(g)-BaCO3 refers to the 18O/16O fractionation between CO2(g) and BaCO3, where the d18O values of CO2(g) were calculated using known equilibrium fractionation factors</p>
http://lod.bco-dmo.org/id/dataset-parameter/865226.rdf
Name: KIF18_CO2g_BaCO3_stdev
Units: per mil (‰)
Description: <p>standard deviation of KIF18_CO2g_BaCO3</p>
http://lod.bco-dmo.org/id/dataset-parameter/865227.rdf
Name: KIF18_Inst
Units: per mil (‰)
Description: <p>kinetic isotope fractionation (KIF)between instantaneously formed HCO3 (inst) and BaCO3</p>
http://lod.bco-dmo.org/id/dataset-parameter/865228.rdf
Name: KIF18_Inst_stdev
Units: per mil (‰)
Description: <p>standard deviation of KIF18_Inst</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
935
https://darchive.mblwhoilibrary.org/bitstream/1912/27786/1/dataset-865161_experimental-data-kinetic-c-and-o-isotope-fractionation-co2-hydration__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.865161.1
download
onLine
dataset
<p>We quasi-instantaneously precipitated BaCO<sub>3</sub> by bubbling CO<sub>2</sub> gas that was in full isotopic equilibrium with NaHCO<sub>3</sub> solution through highly concentrated BaCl<sub>2</sub> solutions buffered at alkaline pH. As the CO<sub>2</sub> gas entered the BaCl<sub>2</sub> solution through a fritted disk, a small fraction of it was transformed into HCO<sub>3</sub><sup>−</sup> via diffusion and hydration across the thin-film of the bubbles. The resultant HCO<sub>3</sub><sup>−</sup> immediately reacted with Ba<sup>2</sup>+ in the solution and precipitated as BaCO<sub>3</sub>. By measuring δ<sup>13</sup>C and δ<sup>18</sup>O values of the BaCO<sub>3</sub> samples and experimental NaHCO<sub>3</sub> and H<sub>2</sub>O and applying oxygen mass-balance, we constrained kinetic C and O isotope effect associated with the hydration of CO<sub>2</sub>.</p>
<p>All carbonate samples (BaCO<sub>3</sub> and NaHCO<sub>3</sub>) were analyzed at the University of California Santa Cruz for δ<sup>13</sup>C and δ<sup>18</sup>O, using a Thermo Finnigan MAT-253 dual-inlet isotope ratio monitoring mass spectrometer (irm-MS) coupled to a Kiel IV carbonate device. The samples were reacted with orthophosphoric acid and the resultant CO<sub>2</sub> gas was analyzed by the irm-MS. Note that all samples were treated as if they are calcite, which means that we did not apply the corrections to account for BaCO<sub>3</sub>-specific and NaHCO<sub>3</sub>-specific acid fractionation factor.</p>
<p>All H<sub>2</sub>O samples were analyzed for δ<sup>18</sup>O at the University of Hawaii on a PICARRO L2130-<em>i</em> isotope and gas concentration analyzer.</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing:</strong><br />
- renamed fields to comply with BCO-DMO naming conventions;<br />
- created separate columns for standard deviations.</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
Thermo Finnigan MAT-253 dual-inlet isotope ratio monitoring mass spectrometer (irm-MS)
Thermo Finnigan MAT-253 dual-inlet isotope ratio monitoring mass spectrometer (irm-MS)
PI Supplied Instrument Name: Thermo Finnigan MAT-253 dual-inlet isotope ratio monitoring mass spectrometer (irm-MS) PI Supplied Instrument Description:All carbonate samples (BaCO3 and NaHCO3) were analyzed at the University of California Santa Cruz for δ13C and δ18O, using a Thermo Finnigan MAT-253 dual-inlet isotope ratio monitoring mass spectrometer (irm-MS) coupled to a Kiel IV carbonate device. Instrument Name: Isotope-ratio Mass Spectrometer Instrument Short Name:IR Mass Spec; IRMS Instrument Description: The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
PICARRO L2130-i isotope and gas concentration analyzer
PICARRO L2130-i isotope and gas concentration analyzer
PI Supplied Instrument Name: PICARRO L2130-i isotope and gas concentration analyzer PI Supplied Instrument Description:All H2O samples were analyzed for δ18O at the University of Hawaii on a PICARRO L2130-i isotope and gas concentration analyzer. Instrument Name: Picarro L2130-I deltaD/delta18O Isotopic Water Analyzer Instrument Short Name:Picarro L2130-I Instrument Description: A portable analyser designed for laboratories or field based isotope analysis. It uses Cavity Ring-Down Spectroscopy (CRDS) to measure the spectral signature of the molecule of interest. The instrument includes a closed-loop temperature and pressure control. The L2130-i can be used in all aspects of the water cycle: water vapor, liquid water, or water trapped in solids. It has a typical precision of 0.25 per mil for d18O and 1.20 per mil for dD in solid samples. Corresponding typical values for liquid samples are 0.011 per mil for d18O and 0.038 per mil for dD.