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Liquid-vapor relations in the critical region of the system NaCl-H2O from 380 to 415°C: A refined determination of the critical point and two-phase boundary of seawater

Geochimica et Cosmochimica Acta

By:
and
DOI: 10.1016/0016-7037(88)90192-5

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Abstract

Pressure-temperature-composition (P-T-x) relations for coexisting vapor and liquid phases in the system NaCl-H2O were determined experimentally in the critical region from 380 to 415°C. The results provide much improved control on the P-T-x critical line in this region. The critical point of seawater (3.2 wt% NaCl solution), which is bracketed in the present study, is at 407°C and 298.5 bar. In addition, the P-T two-phase boundary of seawater was re-determined. These results provide increased precision and accuracy for theoretical models of critical phenomena in this important two-component system and of the limiting PTconditions of seawater in seafloor geothermal systems.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Liquid-vapor relations in the critical region of the system NaCl-H2O from 380 to 415°C: A refined determination of the critical point and two-phase boundary of seawater
Series title:
Geochimica et Cosmochimica Acta
DOI:
10.1016/0016-7037(88)90192-5
Volume
52
Issue:
8
Year Published:
1988
Language:
English
Publisher:
Elsevier
Description:
6 p.
First page:
2121
Last page:
2126
Online Only (Y/N):
N
Additional Online Files(Y/N):
N