The general structure of the software package (SP) being developed for calculating phase and chemical equilibria in water–salt systems is described, as well the principles of database formation. Examples of modeling specific systems presented in the SP are given. Currently, the database includes parameters of the Pitzer and/or Pitzer–Simonson–Clegg models for cations H+, Na+, K+, Ca2+, Mg2+, Cu2+, Zn2+, Ni2+, Co2+, UO₂^{2 + }, Al3+, RE3+ (RE = Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er, Yb), and Th4+ and anions OH–, Cl–, NO₃^ -, SO₄^{2 - }, {{H}₂}PO₄^ -, HPO₄^{2 - }, PO₄^{3 - }, C{{H}₃}SO₃^ - (Ms is methanesulfonate), PHTH–, and PHT2– (PHT is phthalate).
Dzuban et al. (Wed,) studied this question.
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