A thermodynamic model for calculating nitrogen solubility, gas phase composition and density of the N2-H2O-NaCl system

被引：50

作者：

Mao, Shide ^{[1
]}

Duan, Zhenhao ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China

来源：

FLUID PHASE EQUILIBRIA | 2006年 / 248卷 / 02期

基金：

中国国家自然科学基金;

关键词：

N-2; solubility; gas phase composition; density; water; aqueous NaCl solutions;

D O I：

10.1016/j.fluid.2006.07.020

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A thermodynamic model is presented to calculate N-2 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-N-2 system and a specific particle interaction theory for liquid phase. With the parameters evaluated from N-2-H2O-NaCl system and using a simple approach, the model is extended to predict the N-2 solubility in seawater accurately. Liquid phase density of N-2-H2O-NaCl system at phase equilibrium and the homogenization pressure of fluid inclusions containing N-2-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. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：103 / 114

页数：12

共 56 条

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