SOLUTIONS (AQUEOUS) IN FThelg

 

[FThelg-AQID]  Aqueous

 

Aqueous ideal dilute solution of over 1400 solute species taken from the GEOPIG-SUPCRT Helgeson public database.

 

Generally valid up to approximately 0.001 molal.

 

For temperatures up to 350o C and pressures to 165 bar.  Uses the Helgeson equation of state.

 

NEVER select more than one of FThelg-AQID, FThelg-AQDH or FThelg-AQDD simultaneously.

 

 

[FThelg-AQDH]  Aqueous

 

Aqueous Debye-Huckel dilute solution of over 1400 solute species with infinite dilution properties taken from the GEOPIG-SUPCRT Helgeson public database.

 

Incorporating the Debye-Huckel equation.

Generally valid up to approximately 0.02 molal.

 

For temperatures up to 350o C and pressures to 165 bar.  Uses the Helgeson equation of state.

 

 

NEVER select more than one of FThelg-AQID, FThelg-AQDH or FThelg-AQDD simultaneously.

 

 

[FThelg-AQDD]  Aqueous

 

Aqueous Debye-Huckel-Davies dilute solution of over 1400 solute species with infinite dilution properties taken from the GEOPIG-SUPCRT Helgeson public database.

 

Incorporating the extended Debye-Huckel (Davies) equation.

Generally valid up to approximately 0.5 molal.

 

For temperatures up to 350o C and pressures to 165 bar.  Uses the Helgeson equation of state.

 

 

NEVER select more than one of FThelg-AQID, FThelg-AQDH or FThelg-AQDD simultaneously.