Abstract
Intensive studies have been made on the carbonate system in seawater. The thermodynamic constants needed to examine the components of the carbonate system have been developed by several authors. The thermodynamic constants for the dissociation of carbonic acid in seawater have been determined on different pH scales. The two most popular pH scales are the total scale: [H +] T ≤ [H +] F{1 + [SO 4 2] T/K HSO4}) and the seawater scale: [H +] SWS ≤ [H +] F {1 + HSO4[SO 4 2] T/K HSO4 + HF[F -] T/K HF}, where the brackets denote concentrations and the subscripts F and T are for free and total concentrations. The values of K HSO4 and K HF are the dissociation constants for HSO 4 - and HF: As long as the same pH scale and constants for seawater are used, one can evaluate the components of the carbonate system in seawater. Unfortunately, not all the measured and fitted constants have been made for dilute seawater, and thus cannot be used in estuarine waters. In this paper, the measured constants from S ≤ 1 to 50 and t ≤ 0 to 50C have been determined on the total, seawater and free scale (pH F ≤ log[H +] F). These stoichiometric constants can now be used to examine the carbonate system in most estuarine waters.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 139-142 |
| Number of pages | 4 |
| Journal | Marine and Freshwater Research |
| Volume | 61 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2010 |
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Keywords
- PH
- Scales
- Seawater
ASJC Scopus subject areas
- Aquatic Science
- Oceanography
- Ecology, Evolution, Behavior and Systematics
- Ecology
Cite this
Carbonate constants for estuarine waters. / Millero, Frank J.
In: Marine and Freshwater Research, Vol. 61, No. 2, 2010, p. 139-142.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Carbonate constants for estuarine waters
AU - Millero, Frank J
PY - 2010
Y1 - 2010
N2 - Intensive studies have been made on the carbonate system in seawater. The thermodynamic constants needed to examine the components of the carbonate system have been developed by several authors. The thermodynamic constants for the dissociation of carbonic acid in seawater have been determined on different pH scales. The two most popular pH scales are the total scale: [H +] T ≤ [H +] F{1 + [SO 4 2] T/K HSO4}) and the seawater scale: [H +] SWS ≤ [H +] F {1 + HSO4[SO 4 2] T/K HSO4 + HF[F -] T/K HF}, where the brackets denote concentrations and the subscripts F and T are for free and total concentrations. The values of K HSO4 and K HF are the dissociation constants for HSO 4 - and HF: As long as the same pH scale and constants for seawater are used, one can evaluate the components of the carbonate system in seawater. Unfortunately, not all the measured and fitted constants have been made for dilute seawater, and thus cannot be used in estuarine waters. In this paper, the measured constants from S ≤ 1 to 50 and t ≤ 0 to 50C have been determined on the total, seawater and free scale (pH F ≤ log[H +] F). These stoichiometric constants can now be used to examine the carbonate system in most estuarine waters.
AB - Intensive studies have been made on the carbonate system in seawater. The thermodynamic constants needed to examine the components of the carbonate system have been developed by several authors. The thermodynamic constants for the dissociation of carbonic acid in seawater have been determined on different pH scales. The two most popular pH scales are the total scale: [H +] T ≤ [H +] F{1 + [SO 4 2] T/K HSO4}) and the seawater scale: [H +] SWS ≤ [H +] F {1 + HSO4[SO 4 2] T/K HSO4 + HF[F -] T/K HF}, where the brackets denote concentrations and the subscripts F and T are for free and total concentrations. The values of K HSO4 and K HF are the dissociation constants for HSO 4 - and HF: As long as the same pH scale and constants for seawater are used, one can evaluate the components of the carbonate system in seawater. Unfortunately, not all the measured and fitted constants have been made for dilute seawater, and thus cannot be used in estuarine waters. In this paper, the measured constants from S ≤ 1 to 50 and t ≤ 0 to 50C have been determined on the total, seawater and free scale (pH F ≤ log[H +] F). These stoichiometric constants can now be used to examine the carbonate system in most estuarine waters.
KW - PH
KW - Scales
KW - Seawater
UR - http://www.scopus.com/inward/record.url?scp=77649324229&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77649324229&partnerID=8YFLogxK
U2 - 10.1071/MF09254
DO - 10.1071/MF09254
M3 - Article
AN - SCOPUS:77649324229
VL - 61
SP - 139
EP - 142
JO - Marine and Freshwater Research
JF - Marine and Freshwater Research
SN - 1323-1650
IS - 2
ER -