Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions
Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson
Wiley-Blackwell
Published 2018
Wiley-Blackwell
Published 2018
Publication Date: |
2018-02-27
|
---|---|
Publisher: |
Wiley-Blackwell
|
Electronic ISSN: |
1525-2027
|
Topics: |
Chemistry and Pharmacology
Geosciences
Physics
|
Published by: |
_version_ | 1836398815518654465 |
---|---|
autor | Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson |
beschreibung | We report results of 13 C/ 12 C, 18 O/ 16 O, and 13 C- 18 O “clumped” isotope analyses from a series of calcite precipitation experiments from aqueous solutions under laboratory conditions. Chemo-stat precipitation experiments were performed to synthetically form calcite from aqueous solution onto 43 Ca-labeled calcite seed crystals. Formation rate was controlled during the experiments to investigate the effect of precipitation rate and temperature on 13 C- 18 O bonding in calcite, where rates ranged from 10 −6.88 to 10 −8.20 mol m −2 s −1 at three temperatures (10, 20, and 30°C). No relation was observed between precipitation rate and 13 C- 18 O bonding proportion over the range of precipitation rates used. The relation between Δ 47 and temperature produced was: (1) Comparing solution conditions across multiple experimental data sets indicates an inverse relation between saturation state and 13 C- 18 O bonding, where high super-saturation conditions are likely to be furthest from equilibrium 13 C- 18 O partitioning. Carbon fractionation factors between calcite and HCO 3 - (aq) were found to be a temperature independent value of +1.6‰. Measured 18 O/ 16 O fractionation factors, yield a temperature relation of: (2) The temperature-dependent calcite-water 18 O/ 16 O fractionation relation determined in this study is slightly different (larger α calcite-H2O value) than those measured in several previous investigations. Significantly, we observe a dependence of the 18 O/ 16 O isotope fractionation factor on growth rate. Taken together, these findings suggest carbonate growth in our experiments approached equilibrium more closely than previous experiments of this type. |
citation_standardnr | 6176201 |
datenlieferant | ipn_articles |
feed_copyright | American Geophysical Union (AGU) |
feed_copyright_url | http://www.agu.org/ |
feed_id | 6521 |
feed_publisher | Wiley-Blackwell |
feed_publisher_url | http://www.wiley.com/wiley-blackwell |
insertion_date | 2018-02-27 |
journaleissn | 1525-2027 |
publikationsjahr_anzeige | 2018 |
publikationsjahr_facette | 2018 |
publikationsjahr_intervall | 7984:2015-2019 |
publikationsjahr_sort | 2018 |
publisher | Wiley-Blackwell |
quelle | Geochemistry Geophysics Geosystems (G3) |
relation | http://onlinelibrary.wiley.com/resolve/doi?DOI=10.1002%2F2017GC007089 |
search_space | articles |
shingle_author_1 | Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson |
shingle_author_2 | Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson |
shingle_author_3 | Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson |
shingle_author_4 | Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson |
shingle_catch_all_1 | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions We report results of 13 C/ 12 C, 18 O/ 16 O, and 13 C- 18 O “clumped” isotope analyses from a series of calcite precipitation experiments from aqueous solutions under laboratory conditions. Chemo-stat precipitation experiments were performed to synthetically form calcite from aqueous solution onto 43 Ca-labeled calcite seed crystals. Formation rate was controlled during the experiments to investigate the effect of precipitation rate and temperature on 13 C- 18 O bonding in calcite, where rates ranged from 10 −6.88 to 10 −8.20 mol m −2 s −1 at three temperatures (10, 20, and 30°C). No relation was observed between precipitation rate and 13 C- 18 O bonding proportion over the range of precipitation rates used. The relation between Δ 47 and temperature produced was: (1) Comparing solution conditions across multiple experimental data sets indicates an inverse relation between saturation state and 13 C- 18 O bonding, where high super-saturation conditions are likely to be furthest from equilibrium 13 C- 18 O partitioning. Carbon fractionation factors between calcite and HCO 3 - (aq) were found to be a temperature independent value of +1.6‰. Measured 18 O/ 16 O fractionation factors, yield a temperature relation of: (2) The temperature-dependent calcite-water 18 O/ 16 O fractionation relation determined in this study is slightly different (larger α calcite-H2O value) than those measured in several previous investigations. Significantly, we observe a dependence of the 18 O/ 16 O isotope fractionation factor on growth rate. Taken together, these findings suggest carbonate growth in our experiments approached equilibrium more closely than previous experiments of this type. Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson Wiley-Blackwell 1525-2027 15252027 |
shingle_catch_all_2 | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions We report results of 13 C/ 12 C, 18 O/ 16 O, and 13 C- 18 O “clumped” isotope analyses from a series of calcite precipitation experiments from aqueous solutions under laboratory conditions. Chemo-stat precipitation experiments were performed to synthetically form calcite from aqueous solution onto 43 Ca-labeled calcite seed crystals. Formation rate was controlled during the experiments to investigate the effect of precipitation rate and temperature on 13 C- 18 O bonding in calcite, where rates ranged from 10 −6.88 to 10 −8.20 mol m −2 s −1 at three temperatures (10, 20, and 30°C). No relation was observed between precipitation rate and 13 C- 18 O bonding proportion over the range of precipitation rates used. The relation between Δ 47 and temperature produced was: (1) Comparing solution conditions across multiple experimental data sets indicates an inverse relation between saturation state and 13 C- 18 O bonding, where high super-saturation conditions are likely to be furthest from equilibrium 13 C- 18 O partitioning. Carbon fractionation factors between calcite and HCO 3 - (aq) were found to be a temperature independent value of +1.6‰. Measured 18 O/ 16 O fractionation factors, yield a temperature relation of: (2) The temperature-dependent calcite-water 18 O/ 16 O fractionation relation determined in this study is slightly different (larger α calcite-H2O value) than those measured in several previous investigations. Significantly, we observe a dependence of the 18 O/ 16 O isotope fractionation factor on growth rate. Taken together, these findings suggest carbonate growth in our experiments approached equilibrium more closely than previous experiments of this type. Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson Wiley-Blackwell 1525-2027 15252027 |
shingle_catch_all_3 | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions We report results of 13 C/ 12 C, 18 O/ 16 O, and 13 C- 18 O “clumped” isotope analyses from a series of calcite precipitation experiments from aqueous solutions under laboratory conditions. Chemo-stat precipitation experiments were performed to synthetically form calcite from aqueous solution onto 43 Ca-labeled calcite seed crystals. Formation rate was controlled during the experiments to investigate the effect of precipitation rate and temperature on 13 C- 18 O bonding in calcite, where rates ranged from 10 −6.88 to 10 −8.20 mol m −2 s −1 at three temperatures (10, 20, and 30°C). No relation was observed between precipitation rate and 13 C- 18 O bonding proportion over the range of precipitation rates used. The relation between Δ 47 and temperature produced was: (1) Comparing solution conditions across multiple experimental data sets indicates an inverse relation between saturation state and 13 C- 18 O bonding, where high super-saturation conditions are likely to be furthest from equilibrium 13 C- 18 O partitioning. Carbon fractionation factors between calcite and HCO 3 - (aq) were found to be a temperature independent value of +1.6‰. Measured 18 O/ 16 O fractionation factors, yield a temperature relation of: (2) The temperature-dependent calcite-water 18 O/ 16 O fractionation relation determined in this study is slightly different (larger α calcite-H2O value) than those measured in several previous investigations. Significantly, we observe a dependence of the 18 O/ 16 O isotope fractionation factor on growth rate. Taken together, these findings suggest carbonate growth in our experiments approached equilibrium more closely than previous experiments of this type. Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson Wiley-Blackwell 1525-2027 15252027 |
shingle_catch_all_4 | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions We report results of 13 C/ 12 C, 18 O/ 16 O, and 13 C- 18 O “clumped” isotope analyses from a series of calcite precipitation experiments from aqueous solutions under laboratory conditions. Chemo-stat precipitation experiments were performed to synthetically form calcite from aqueous solution onto 43 Ca-labeled calcite seed crystals. Formation rate was controlled during the experiments to investigate the effect of precipitation rate and temperature on 13 C- 18 O bonding in calcite, where rates ranged from 10 −6.88 to 10 −8.20 mol m −2 s −1 at three temperatures (10, 20, and 30°C). No relation was observed between precipitation rate and 13 C- 18 O bonding proportion over the range of precipitation rates used. The relation between Δ 47 and temperature produced was: (1) Comparing solution conditions across multiple experimental data sets indicates an inverse relation between saturation state and 13 C- 18 O bonding, where high super-saturation conditions are likely to be furthest from equilibrium 13 C- 18 O partitioning. Carbon fractionation factors between calcite and HCO 3 - (aq) were found to be a temperature independent value of +1.6‰. Measured 18 O/ 16 O fractionation factors, yield a temperature relation of: (2) The temperature-dependent calcite-water 18 O/ 16 O fractionation relation determined in this study is slightly different (larger α calcite-H2O value) than those measured in several previous investigations. Significantly, we observe a dependence of the 18 O/ 16 O isotope fractionation factor on growth rate. Taken together, these findings suggest carbonate growth in our experiments approached equilibrium more closely than previous experiments of this type. Nicholas P. Levitt, John M. Eiler, Christopher S. Romanek, Brian L. Beard, Huifang Xu, Clark M. Johnson Wiley-Blackwell 1525-2027 15252027 |
shingle_title_1 | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions |
shingle_title_2 | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions |
shingle_title_3 | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions |
shingle_title_4 | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions |
timestamp | 2025-06-30T23:33:01.244Z |
titel | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions |
titel_suche | Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions |
topic | V TE-TZ U |
uid | ipn_articles_6176201 |