Activity coefficients of bicarbonates and carbonates in seawater1
The total (stoichiometric) activity coefficients of bicarbonate and of carbonate ions were determined in seawater by a method that is independent of ion-pairing models and used in conjunction with estimates of the coefficients of major cations to calculate the mean activity cocfficicnts of bicarbona...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.507.2064 2023-05-15T15:52:54+02:00 Activity coefficients of bicarbonates and carbonates in seawater1 R. M. Pytkowicx The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.507.2064 http://www.aslo.org/lo/toc/vol_20/issue_6/0971.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.507.2064 http://www.aslo.org/lo/toc/vol_20/issue_6/0971.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_20/issue_6/0971.pdf text ftciteseerx 2016-01-08T09:25:49Z The total (stoichiometric) activity coefficients of bicarbonate and of carbonate ions were determined in seawater by a method that is independent of ion-pairing models and used in conjunction with estimates of the coefficients of major cations to calculate the mean activity cocfficicnts of bicarbonate and carbonate salts. The total ( stoichiometric) activity coef-ficients of bicarbonate and of carbonate ions in seawater were dctcrmined as a func-tion of the salinity from the ratios of the thermodynamic and the apparent dissocia-tion constants of carbonic acid. This method made it unnecessary to resort to ion-pairing models and, thus, permitted the avoidance of many assumptions. The coefficients were used in conjunction with estimated ones for some of the major ca-tions of seawater, introducing at this stage specific ionic interaction models, to calcu-late the first reported values of the mean activity coefficients of bicarbonate and of carbonate salts in seawater. Data on single ion and mean activity coefficients are of use in physicochemical studies such as the interpretation of the solubility behavior of minerals in seawater. Free activity coefficients are those that are obtained in unassociated solutions and, in solutions in which specific ionic intcr-actions occur, are a construct that corre-sponds to the effects of the ionic strength alone. Total activity coefficients, on the other hand, are those mcasurcd in the pres-ence of specific interactions and are re-lated to free ones, when the ion-pairing model is used (Pytkowicz et al. 1966; Pyt-kowicz 1969)) by a=fp(F) =fg(T) (1) whcrc c1 is the activity, fill and fTl arc the fret and the total activity coefficients, and Text Carbonic acid Unknown |
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description |
The total (stoichiometric) activity coefficients of bicarbonate and of carbonate ions were determined in seawater by a method that is independent of ion-pairing models and used in conjunction with estimates of the coefficients of major cations to calculate the mean activity cocfficicnts of bicarbonate and carbonate salts. The total ( stoichiometric) activity coef-ficients of bicarbonate and of carbonate ions in seawater were dctcrmined as a func-tion of the salinity from the ratios of the thermodynamic and the apparent dissocia-tion constants of carbonic acid. This method made it unnecessary to resort to ion-pairing models and, thus, permitted the avoidance of many assumptions. The coefficients were used in conjunction with estimated ones for some of the major ca-tions of seawater, introducing at this stage specific ionic interaction models, to calcu-late the first reported values of the mean activity coefficients of bicarbonate and of carbonate salts in seawater. Data on single ion and mean activity coefficients are of use in physicochemical studies such as the interpretation of the solubility behavior of minerals in seawater. Free activity coefficients are those that are obtained in unassociated solutions and, in solutions in which specific ionic intcr-actions occur, are a construct that corre-sponds to the effects of the ionic strength alone. Total activity coefficients, on the other hand, are those mcasurcd in the pres-ence of specific interactions and are re-lated to free ones, when the ion-pairing model is used (Pytkowicz et al. 1966; Pyt-kowicz 1969)) by a=fp(F) =fg(T) (1) whcrc c1 is the activity, fill and fTl arc the fret and the total activity coefficients, and |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
R. M. Pytkowicx |
spellingShingle |
R. M. Pytkowicx Activity coefficients of bicarbonates and carbonates in seawater1 |
author_facet |
R. M. Pytkowicx |
author_sort |
R. M. Pytkowicx |
title |
Activity coefficients of bicarbonates and carbonates in seawater1 |
title_short |
Activity coefficients of bicarbonates and carbonates in seawater1 |
title_full |
Activity coefficients of bicarbonates and carbonates in seawater1 |
title_fullStr |
Activity coefficients of bicarbonates and carbonates in seawater1 |
title_full_unstemmed |
Activity coefficients of bicarbonates and carbonates in seawater1 |
title_sort |
activity coefficients of bicarbonates and carbonates in seawater1 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.507.2064 http://www.aslo.org/lo/toc/vol_20/issue_6/0971.pdf |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
http://www.aslo.org/lo/toc/vol_20/issue_6/0971.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.507.2064 http://www.aslo.org/lo/toc/vol_20/issue_6/0971.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766387998245519360 |