An empirical solvus for CO 2 -H 2 O-2.6 wt% salt

Details An empirical solvus for CO 2 -H 2 O-2.6 wt% salt An empirical solvus for CO 2 -H 2 O-2.6 wt% salt

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gecoa..45..225h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 45, Issue 2, pp.225-228

Physics

13

Scientific paper

The solvus in the system CO 2 -H 2 O-2.6 wt% NaCl-equivalent was determined by measuring temperature of homogenization in fluid inclusions which contained variable CO 2 / H 2 O but the same amount of salt dissolved in the aqueous phase at room temperature. The critical point of the solvus is at 340 ± 5° C , at pressures between 1 and 2 kbar; this is about 65°C higher than for the pure CO 2 -H 2 O system. The solvus is assymetrical, with a steeper H 2 O-rich limb and with the critical point at mole fraction of water between 0.65 and 0.8.

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