Thermodynamic description of chloride, hydrosulfide, and hydroxo complexesof Ag(I), Cu(I), and Au(I) at temperatures of 25-500 degrees C and pressures of 1-2000 bar

Authors
Akinfiev, NN Zotov, AV
Citation
Nn. Akinfiev et Av. Zotov, Thermodynamic description of chloride, hydrosulfide, and hydroxo complexesof Ag(I), Cu(I), and Au(I) at temperatures of 25-500 degrees C and pressures of 1-2000 bar, GEOCHEM INT, 39(10), 2001, pp. 990-1006
Citations number
55
Categorie Soggetti
Earth Sciences
Journal title
GEOCHEMISTRY INTERNATIONAL
ISSN journal
00167029 → ACNP
Volume
39
Issue
10
Year of publication
2001
Pages
990 - 1006
Database
ISI
SICI code
0016-7029(200110)39:10<990:TDOCHA>2.0.ZU;2-P
Abstract
The available experimental data on the stability constants of chloride, hyd rosulfide, and hydroxo complexes of Ag(l), Cu(l), and Au(l) under hydrother mal conditions were processed. ne procedure employed the Helgeson-Kirkham-F lowers (HKF) equation of state and approximate estimates of the model param eters based on the isocoulomb principle and the model of ion associations. The resulting set of the thermodynamic properties of aqueous species allows the evaluation of equilibria in the system Ag(I)-Cu(I)-Au(I)-S(II)-Cl-O-H in a wide range of temperatures (25-500 degreesC) and pressures (1-2000 bar ).