A thermodynamic model for calculating nitrogen solubility, gas phase composition and density of the N2-H2O-NaCl system
Fluid Phase Equilibria, 248 (2):
103--114 (2006)DOI: 10.1016/j.fluid.2006.07.020
Abstract
A thermodynamic model is presented to calculate N2 solubility in pure water (273-590 K and 1-600 bar) and aqueous NaCl solutions (273-400 K, 1-600 bar and 0-6 mol kg-1) with or close to experimental accuracy. This model is based on a semi-empirical equation used to calculate gas phase composition of the H2O-N2 system and a specific particle interaction theory for liquid phase. With the parameters evaluated from N2-H2O-NaCl system and using a simple approach, the model is extended to predict the N2 solubility in seawater accurately. Liquid phase density of N2-H2O-NaCl system at phase equilibrium and the homogenization pressure of fluid inclusions containing N2-H2O-NaCl can be calculated from this model. A computer code is developed for this model and can be downloaded from the website: www.geochem-model.org/programs.htm.
Description
ScienceDirect - Fluid Phase Equilibria : A thermodynamic model for calculating nitrogen solubility, gas phase composition and density of the N2–H2O–NaCl system