CHNOSZ: Thermodynamic Calculations and Diagrams for Geochemistry
An integrated set of tools for thermodynamic calculations in aqueous geochemistry and geobiochemistry. Functions are provided for writing balanced reactions to form species from user-selected basis species and for calculating the standard molal properties of species and reactions, including the standard Gibbs energy and equilibrium constant. Calculations of the non-equilibrium chemical affinity and equilibrium chemical activity of species can be portrayed on diagrams as a function of temperature, pressure, or activity of basis species; in two dimensions, this gives a maximum affinity or predominance diagram. The diagrams have formatted chemical formulas and axis labels, and water stability limits can be added to Eh-pH, oxygen fugacity- temperature, and other diagrams with a redox variable. The package has been developed to handle common calculations in aqueous geochemistry, such as solubility due to complexation of metal ions, mineral buffers of redox or pH, and changing the basis species across a diagram ("mosaic diagrams"). CHNOSZ also implements a group additivity algorithm for the standard thermodynamic properties of proteins.
| Version: | 1.4.3 |
| Depends: | R (≥ 3.1.0) |
| Imports: | grDevices, graphics, stats, utils |
| Suggests: | tinytest, knitr, rmarkdown, tufte |
| Published: | 2022-02-22 |
| Author: | Jeffrey Dick 
[aut, cre] |
| Maintainer: | Jeffrey Dick <j3ffdick at gmail.com> |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: | http://www.chnosz.net/, http://chnosz.r-forge.r-project.org/ |
| NeedsCompilation: | yes |
| Citation: | CHNOSZ citation info |
| Materials: | NEWS |
| In views: | ChemPhys |
| CRAN checks: | CHNOSZ results |
Documentation:
| Reference manual: | CHNOSZ.pdf |
| Vignettes: |
OBIGT thermodynamic database An Introduction to CHNOSZ Regressing thermodynamic data Equilibrium in CHNOSZ Diagrams with multiple metals |
Downloads:
| Package source: | CHNOSZ_1.4.3.tar.gz |
| Windows binaries: | r-devel: CHNOSZ_1.4.3.zip, r-release: CHNOSZ_1.4.3.zip, r-oldrel: CHNOSZ_1.4.3.zip |
| macOS binaries: | r-release (arm64): CHNOSZ_1.4.3.tgz, r-oldrel (arm64): CHNOSZ_1.4.3.tgz, r-release (x86_64): CHNOSZ_1.4.3.tgz, r-oldrel (x86_64): CHNOSZ_1.4.3.tgz |
| Old sources: | CHNOSZ archive |
Reverse dependencies:
| Reverse depends: | canprot |
| Reverse imports: | accucor, ecipex, iemisc, LipidMS |
Linking:
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