THE RELIABILITY OF THE THERMODYNAMIC CONSTANTS FOR THE DISSOCIATION OF CARBONIC ACID IN SEAWATER
Laboratory measurements of all four CO2 parameters [f(CO2) (= fugacity of CO2), pH, TCO2 (= total dissolved inorganic carbon), and TA (= total alkalinity)] were made on the same sample of Gulf Stream seawater (S = 35) as a function of temperature (5-35 degrees C) and the ratio of TA/TCO2 (X) (1.0-1....
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Language: | English |
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ELSEVIER SCIENCE BV
1996
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Online Access: | https://oasis.postech.ac.kr/handle/2014.oak/28528 https://doi.org/10.1016/S0304-4203(96)00064-3 |
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ftponangunivst:oai:oasis.postech.ac.kr:2014.oak/28528 2023-05-15T15:52:41+02:00 THE RELIABILITY OF THE THERMODYNAMIC CONSTANTS FOR THE DISSOCIATION OF CARBONIC ACID IN SEAWATER Lee, K Millero, FJ Campbell, DM 환경공학부 10056383 Lee, K 1996-12 https://oasis.postech.ac.kr/handle/2014.oak/28528 https://doi.org/10.1016/S0304-4203(96)00064-3 English eng ELSEVIER SCIENCE BV MARINE CHEMISTRY 55 3-4 233 245 SCI급, SCOPUS 등재논문 SCI Chemistry, Multidisciplinary Oceanography Chemistry 0304-4203 1997-OAK-0000017786 https://oasis.postech.ac.kr/handle/2014.oak/28528 doi:10.1016/S0304-4203(96)00064-3 21106 MARINE CHEMISTRY, v.55, no.3-4, pp.233 - 245 A1996WC87500003 thermodynamic constants carbonic acid fugacity of CO2 spectrophotometric pH total inorganic carbon total alkalinity SEA-WATER PARTIAL-PRESSURE DIOXIDE ANALYSIS PH MEASUREMENTS CO2 TEMPERATURE CALIBRATION CONSISTENCY SALINITY FUGACITY Article ART 1996 ftponangunivst https://doi.org/10.1016/S0304-4203(96)00064-3 2022-10-20T20:18:33Z Laboratory measurements of all four CO2 parameters [f(CO2) (= fugacity of CO2), pH, TCO2 (= total dissolved inorganic carbon), and TA (= total alkalinity)] were made on the same sample of Gulf Stream seawater (S = 35) as a function of temperature (5-35 degrees C) and the ratio of TA/TCO2 (X) (1.0-1.2). Overall the measurements were consistent to +/-8 mu atm in f(CO2), +/-0.004 in pH, +/-3 mu mol kg(-1) in TCO2, and +/-3 mu mol kg(-1) in TA with the thermodynamic constants of Goyet and Poisson (1989), Roy et al. (1993), and Millero (1995). Deviations between the measured pH, TCO2, TA and those calculated from various input combinations increase with increasing X when the same constants are used. This trend in the deviations indicates that the uncertainties in pK(2) become important with increasing X (surface waters), but are negligible for samples with the lower X (deep waters). This trend is < 5 mu mol kg(-1) when the pK(2) values of Lee and Millero (1995) are used. The overall probable error of the calculated f(CO2) due to uncertainties in the accuracy of the parameters (pH, TCO2, TA, pK(0), pK(1), and pK(2)) is +/-1.2%, which is similar to the differences between the measured values and those calculated using the thermodynamic constants of Millero (1995). The calculated values of pK(1) (from f(CO2)-TCO2-TA) agree to within +/-0.004 compared to the results of Dickson and Millero (1987), Goyet and Poisson (1989), Roy et al. (1993), and Millero (1995) over the same experimental conditions. The calculated values of pK(2) (from pH-TCO2-TA) are in good agreement (+/-0.004) with the results of Lee and Millero (1995) and also in reasonable agreement (+/-0.008) with the results of Goyet and Poisson (1989), Roy et al. (1993), and Millero (1995). The salinity dependence of our derived values of pK(1) and pK(2) (S = 35) can be estimated using the equations determined by Millero (1995). X 1 1 35 scie scopus Article in Journal/Newspaper Carbonic acid Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) Marine Chemistry 55 3-4 233 245 |
institution |
Open Polar |
collection |
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) |
op_collection_id |
ftponangunivst |
language |
English |
topic |
thermodynamic constants carbonic acid fugacity of CO2 spectrophotometric pH total inorganic carbon total alkalinity SEA-WATER PARTIAL-PRESSURE DIOXIDE ANALYSIS PH MEASUREMENTS CO2 TEMPERATURE CALIBRATION CONSISTENCY SALINITY FUGACITY |
spellingShingle |
thermodynamic constants carbonic acid fugacity of CO2 spectrophotometric pH total inorganic carbon total alkalinity SEA-WATER PARTIAL-PRESSURE DIOXIDE ANALYSIS PH MEASUREMENTS CO2 TEMPERATURE CALIBRATION CONSISTENCY SALINITY FUGACITY Lee, K Millero, FJ Campbell, DM THE RELIABILITY OF THE THERMODYNAMIC CONSTANTS FOR THE DISSOCIATION OF CARBONIC ACID IN SEAWATER |
topic_facet |
thermodynamic constants carbonic acid fugacity of CO2 spectrophotometric pH total inorganic carbon total alkalinity SEA-WATER PARTIAL-PRESSURE DIOXIDE ANALYSIS PH MEASUREMENTS CO2 TEMPERATURE CALIBRATION CONSISTENCY SALINITY FUGACITY |
description |
Laboratory measurements of all four CO2 parameters [f(CO2) (= fugacity of CO2), pH, TCO2 (= total dissolved inorganic carbon), and TA (= total alkalinity)] were made on the same sample of Gulf Stream seawater (S = 35) as a function of temperature (5-35 degrees C) and the ratio of TA/TCO2 (X) (1.0-1.2). Overall the measurements were consistent to +/-8 mu atm in f(CO2), +/-0.004 in pH, +/-3 mu mol kg(-1) in TCO2, and +/-3 mu mol kg(-1) in TA with the thermodynamic constants of Goyet and Poisson (1989), Roy et al. (1993), and Millero (1995). Deviations between the measured pH, TCO2, TA and those calculated from various input combinations increase with increasing X when the same constants are used. This trend in the deviations indicates that the uncertainties in pK(2) become important with increasing X (surface waters), but are negligible for samples with the lower X (deep waters). This trend is < 5 mu mol kg(-1) when the pK(2) values of Lee and Millero (1995) are used. The overall probable error of the calculated f(CO2) due to uncertainties in the accuracy of the parameters (pH, TCO2, TA, pK(0), pK(1), and pK(2)) is +/-1.2%, which is similar to the differences between the measured values and those calculated using the thermodynamic constants of Millero (1995). The calculated values of pK(1) (from f(CO2)-TCO2-TA) agree to within +/-0.004 compared to the results of Dickson and Millero (1987), Goyet and Poisson (1989), Roy et al. (1993), and Millero (1995) over the same experimental conditions. The calculated values of pK(2) (from pH-TCO2-TA) are in good agreement (+/-0.004) with the results of Lee and Millero (1995) and also in reasonable agreement (+/-0.008) with the results of Goyet and Poisson (1989), Roy et al. (1993), and Millero (1995). The salinity dependence of our derived values of pK(1) and pK(2) (S = 35) can be estimated using the equations determined by Millero (1995). X 1 1 35 scie scopus |
author2 |
환경공학부 10056383 Lee, K |
format |
Article in Journal/Newspaper |
author |
Lee, K Millero, FJ Campbell, DM |
author_facet |
Lee, K Millero, FJ Campbell, DM |
author_sort |
Lee, K |
title |
THE RELIABILITY OF THE THERMODYNAMIC CONSTANTS FOR THE DISSOCIATION OF CARBONIC ACID IN SEAWATER |
title_short |
THE RELIABILITY OF THE THERMODYNAMIC CONSTANTS FOR THE DISSOCIATION OF CARBONIC ACID IN SEAWATER |
title_full |
THE RELIABILITY OF THE THERMODYNAMIC CONSTANTS FOR THE DISSOCIATION OF CARBONIC ACID IN SEAWATER |
title_fullStr |
THE RELIABILITY OF THE THERMODYNAMIC CONSTANTS FOR THE DISSOCIATION OF CARBONIC ACID IN SEAWATER |
title_full_unstemmed |
THE RELIABILITY OF THE THERMODYNAMIC CONSTANTS FOR THE DISSOCIATION OF CARBONIC ACID IN SEAWATER |
title_sort |
reliability of the thermodynamic constants for the dissociation of carbonic acid in seawater |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
1996 |
url |
https://oasis.postech.ac.kr/handle/2014.oak/28528 https://doi.org/10.1016/S0304-4203(96)00064-3 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
MARINE CHEMISTRY 55 3-4 233 245 SCI급, SCOPUS 등재논문 SCI Chemistry, Multidisciplinary Oceanography Chemistry 0304-4203 1997-OAK-0000017786 https://oasis.postech.ac.kr/handle/2014.oak/28528 doi:10.1016/S0304-4203(96)00064-3 21106 MARINE CHEMISTRY, v.55, no.3-4, pp.233 - 245 A1996WC87500003 |
op_doi |
https://doi.org/10.1016/S0304-4203(96)00064-3 |
container_title |
Marine Chemistry |
container_volume |
55 |
container_issue |
3-4 |
container_start_page |
233 |
op_container_end_page |
245 |
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1766387800269127680 |