Paq.ppi

SPECIATION
  jobTitle                             "Fe-Al-Ca-P"
  calculationType                      ht1
  calculationMethod                    1
  mainSpecies                          "P"
  xmin                                 2.0
  xmax                                 10.0
  ymin                                 -80.0
  ymax                                 0.0
  resolution                           500

PLOT
  plotTitle                            "P-Fe-Al-Ca<br>(only aqueous species)"
  xtitle                               pH
  ytitle                               "log <i>f </i>O<sub>2</sub>(g)"
  extraText                            "extratextP.dat"

CHEMISTRY

include 'ht1.inc' 

# first simulation - initial solution calculation
SOLUTION 1
   Temp      20
   pH        1.8
   units     mol/kgw
   density   1
   P         1e-3
   Ca        1e-1
   Fe        1e-1
   Al        1e-1
   Na        1e-1
   Cl        1e-1 charge
END

# second simulation - reaction and equilibration
USE solution 1
EQUILIBRIUM_PHASES 1
   Fix_H+     -<x_axis> NaOH
     -force_equality true
   O2(g)      <y_axis>
   CO2(g)     -3.5                                                   # no minerals - aqueous species only
 END