Near Equilibrium 13C-18O Bonding During Inorganic Calcite Precipitation Under Chemo-Stat Conditions

Publication Date:
2018-02-27
Publisher:
Wiley-Blackwell
Electronic ISSN:
1525-2027
Topics:
Chemistry and Pharmacology
Geosciences
Physics
Published by:
http://www.wiley.com/wiley-blackwell
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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