Determination of activity coefficients of neutral species in supercritical H2O solutions

Geochimica et Cosmochimica Acta

Volumn 61, Issue 16, 1997, Pages 3311-3318

  Walther, John V ^a  

^a SOUTHERN METHODIST UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVITY COEFFICIENT; AQUEOUS SOLUTION; SILICATE; SOLUBILITY; SUPERCRITICAL SOLUTION;

EID: 0031418090     PISSN: 00167037     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0016-7037(97)00170-1     Document Type: Article

References (46)

1. Anderson G. M., Pascal M. L., and Rao J. (1987) Aluminum speciation in metamorphic fluids. In Chemical Transport in Metasomatic Processes (ed. H. C. Helgeson); NATO ASI Ser. C 218, 297-321. Reidel Publ.
2. Barta L. and Bradley D. J. (1985) Extension of the specific interaction model to include gas solubilities in high temperature brine. Geochim. Cosmochim. Acta 49, 195-204.
3. Barrett T. J., Anderson G. M., and Lugowski J. (1988) The solubility of hydrogen sulphide in 0-5 m NaCl solutions at 25-95°C and one atmosphere. Geochim. Cosmochim. Acta 52, 807-811.
4. Chen C.-T. A. and Marshall W. L. (1982) Amorphous silica solubilities IV. Behavior in pure water and aqueous sodium chloride, sodium sulfate, magnesium chloride, and magnesium sulfate solutions up to 350°C. Geochim. Cosmochim. Acta 46, 279-287.
5. Debye P. and Hückel E. (1923a) Zur Theorie der Elektrolyte. I. Gefrierpunktserniedrigung und verwandte Erscheinungen. Phys. Zeitschrift 24, 185-206.
6. Debye P. and Hückel E. (1923b) Zur Theorie der Elektrolyte. II. Das Grenzgesetz für die elektrische Leitfähigkeit. Phys. Zeitschrift 24, 305-324.
7. Eugster H. P. and Baumgartner L. (1987) Mineral solubilities and speciation in supercritical metamorphic fluids. In Thermodynamic Modeling of Geological Materials: Minerals, Fluids, and Melts (ed. I. S. E. Carmichael and H. P. Eugster); Rev. Mineral. 17, 367-403. MSA.
8. Frantz J. D. and Marshall W. L. (1982) Electrical conductances and ionization constants of calcium chloride and magnesium chloride in aqueous solutions at temperatures to 600°C and pressures to 4000 bars. Amer. J. Sci. 282, 1666-1693.
9. Frantz J. D. and Marshall W. L. (1984) Electrical conductances and ionization constants of salts, acids, and bases in supercritical aqueous fluids: I. Hydrochloric acid from 100 to 700°C and at pressures to 4000 bars. Amer. J. Sci. 284, 651-667.
10. 2O-HCl. Geochim. Cosmochim. Acta 43, 1223-1239.
11. 2-NaCl-HCl fluids in the range 500-700°C, 2 kb. Geochim. Cosmochim. Acta 55, 2819-2829.
12. Helgeson H. C. and Kirkham D. H. (1976) Theoretical prediction of the thermodynamic behavior of aqueous electrolytes at high pressures and temperatures: III. Equation of state for aqueous species at infinite dilution. Amer. J. Sci. 276, 97-249.
13. Helgeson H. C., Kirkham D. H., and Flowers G. C. (1981) Theoretical prediction of the thermodynamic behavior of aqueous electrolytes at high pressures and temperatures: IV. Calculation of activity coefficients, osmotic coefficients, and apparent molal and standard and relative partial molal properties to 600°C and 5 Kb. Amer. J. Sci. 281, 1249-1516.
14. Johnson J. W., Oelkers E. H., and Helgeson H. C. (1992) SUPCRT92: A software package for calculating the standard molal thermodynamic properties of minerals, gases, aqueous species, and reactions from 1 to 5000 bars and 0° to 1000°C. Comp. Geosci. 18, 899-947.
15. Kirkwood J. G. (1939) Theoretical studies upon dipolar ions. Chem. Rev. 24, 233-251.
16. Long F. A. and McDevit W. F. (1952) Activity coefficients of non-electrolytes in aqueous electrolyte solutions. Chem. Rev. 51, 119-169.
17. Marshall W. L. (1980a) Amorphous silica solubilities I. Behavior in aqueous sodium nitrate solutions; 25-300°C, 0-6 molal. Geochim. Cosmochim. Acta 44, 907-913.
18. Marshall W. L. (1980b) Amorphous silica solubilities III. Activity coefficient relations and predictions of solubility behavior in salt solutions, 0-350°C. Geochim. Cosmochim. Acta 44, 925-931.
19. Marshall W. L. and Chen C.-T. A. (1982a) Amorphous silica solubilities IV. Behavior in pure water and aqueous sodium chloride, sodium sulfate, magnesium chloride, and magnesium sulfate solutions up to 350°C. Geochim. Cosmochim. Acta 46, 279-287.
20. Marshall W. L. and Chen C.-T. A. (1982b) Amorphous silica solubilities V. Predictions of solubility behavior in aqueous mixed electrolyte solutions to 300°C. Geochim. Cosmochim. Acta 46, 289-291.
21. Marshall W. L. and Frantz J. D. (1987) Electrical conductance measurements of dilute, aqueous electrolytes at temperatures to 800°C and pressures to 4264 bars: Techniques and interpretations. In Hydrothermal Experimental Techniques (ed. G. C. Ulmer and H. L. Barnes), pp. 261-292. Wiley.
22. Marshall W. L. and Warakomski J. M. (1980) Amorphous silica solubilities II. Effect of aqueous salt solutions at 25°C. Geochim. Cosmochim. Acta 44, 915-924.
23. Oelkers E. H. and Helgeson H. C. (1990) Triple ion anions and polynuclear complexing in supercritical electrolyte solutions. Geochim. Cosmochim. Acta 54, 727-738.
24. Oelkers E. H. and Helgeson H. C. (1991) Calculation of activity coefficients and degrees of formation of neutral ion pairs in supercritical electrolyte solutions. Geochim. Cosmochim. Acta 55, 1235-1251.
25. Oelkers E. H. and Helgeson H. C. (1993a) Multiple ion association in supercritical aqueous solutions of single electrolytes. Science 261, 888-891.
26. Oelkers E. H. and Helgeson H. C. (1993b) Calculation of dissociation constants and the relative stabilities of polynuclear clusters of 1:1 electrolytes in hydrothermal solutions at supercritical pressures and temperatures. Geochim. Cosmochim. Acta 57, 2673-2697.
27. Onsager L. (1927) Zur Theorie der Elektrolyte. II. Phys. Zeitschrift 28, 277-298.
28. Pitzer K. S. and Brewer L. (1961) Thermodynamics. 2nd ed. McGraw-Hill.
29. 2O-NaCl. Amer. J. Sci. 285, 1255-1342.
30. Prausnitz J. M. (1969) Molecular Thermodynamics of Fluid-Phase Equilibria. Prentice-Hall.
31. Quist A. S. (1970) The ionization constant of water to 800°C and 4,000 bars. J. Phys. Chem. 74, 3396-3502.
32. Quist A. S. and Marshall W. L. (1966) Electrical conductances of solutions at high temperatures and pressures. III. The conductance of potassium bisulfate solutions from 0-700°C and at pressures to 4000 bars. J. Phys. Chem. 72, 3714-3725.
33. Quist A. S. and Marshall W. L. (1968a) Electrical conductances of aqueous sodium chloride solutions from 0 to 800° and at pressures to 4000 bars. J. Phys. Chem. 72, 684-703.
34. Quist A. S. and Marshall W. L. (1968b) Electrical conductances of aqueous sodium bromide solutions from 0 to 800° and at pressures to 4000 bars. J. Phys. Chem. 72, 2100-2105.
35. Quist A. S. and Marshall W. L. (1968c) Electrical conductances of aqueous hydrogen bromide solutions from 0 to 800° and at pressures to 4000 bars. J. Phys. Chem. 72, 1545-1552.
36. Quist A. S., Marshall W. L., and Jolley H. R. (1965) Electrical conductances of solutions at high temperatures and pressures. II. The conductances and ionization constants of sulfuric acid-water solulions from 0-800°C and at pressures up to 4000 bars. J. Phys. Chem. 69, 2726-2735.
37. Robinson R. A. and Stokes R. H. (1959) Electrolyte Solutions. 2nd ed. Butterworth.
38. 2 solutions at 300, 350, and 400°C, 500 bars. Geochim. Cosmochim. Acta 54, 3283-3294.
39. Setchénow M. (1892) Action de l'acide carbonique sur les solutions des sel à acids forts. Ann. Chim. Phys. 25, 225-270.
40. Shedlovsky T. (1938) Computation of ionization constants and limiting equivalent conductance values from conductivity measurements. J. Franklin Inst. 225, 739-743.
41. Tanger J. C. and Helgeson H. C. (1988) Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures: Revised equations of state for the standard partial molal properties of ions and electrolytes. Amer. J. Sci. 288, 19-98.
42. 2O solutions. Pure Appl. Chem. 58, 1585-1598.
43. Walther J. V. (1991) Determining the thermodynamic properties of solutes in crustal fluids. Amer. J. Sci. 291, 453-472.
44. Walther J. V. and Helgeson H. C. (1977) Calculation of the thermodynamic properties of aqueous silica and the solubility of quartz and its polymorphs at high pressures and temperatures. Amer. J. Sci. 277, 1315-1351.
45. Wood S. A., Crerar D., Brantley S. L., and Borcsik M. (1984) Mean molal stoichiometric activity coefficients of alkali halides and related electrolytes in hydrothermal solutions. Amer. J. Sci. 284, 668-705.
46. Xie Z. and Walther J. V. (1993) Quartz solubilities in NaCl solutions with and without wollastonite at elevated temperatures and pressures. Geochim. Cosmochim. Acta 57, 1947-1955.