caa a22 4500 477139515 CHVBK 20180405111728.0 cr unu---uuuuu 170330e19970501xx s 000 0 eng 10.1007/BF02767600 doi (NATIONALLICENCE)springer-10.1007/BF02767600 Calculation of densities of aqueous electrolyte solutions at subzero temperatures [Elektronische Daten] [Mikhail Mironenko, Steven Grant, Giles Marion] We developed a FORTRAN program based on the Pitzer equations to calculate densities of electrolyte solutions at subzero temperatures. Data from the published literature collected at -28.9, -17.8, -12.2, -6.7, 0, and 25°C were used to calculate the Pitzer-equation parameters and to evaluate model performance. Three approaches to estimating the molar volume of the solute at infinite dilution were evaluated: (1) extrapolation of apparent molar volumes to zero square-root ionic strength; (2) calculation with the Tanger and Helgeson model; and (3) global fit of the data in which the molar volume of the solute at infinite dilution was estimated along with the Pitzer-equation parameters. The last approach gave parameter estimates that reproduced the experimental data most accurately. The parameterized model predicted accurately densities of single-electrolyte and multielectrolyte solutions at -28.9, -17.8, -12.2, -6.7, 0, and 25°C. Available experimental data are generally quite poor. Accordingly, Pitzer-equation parameters estimated for subzero temperatures should be viewed as conditional until improved measurements of single-electrolyte solution densities at subzero temperatures are made. Plenum Publishing Corporation, 1997 Electrolyte solution nationallicence density nationallicence subzero temperature nationallicence apparent molar volume nationallicence Pitzer equations nationallicence Mironenko Mikhail Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin Street 19, 117975, Moscow, Russia aut Grant Steven Cold Regions Research & Engineering Laboratory, 72 Lyme Rd., 03755-1290, Hanover, New Hampshire aut Marion Giles Cold Regions Research & Engineering Laboratory, 72 Lyme Rd., 03755-1290, Hanover, New Hampshire aut Journal of Solution Chemistry Springer US 26/5(1997-05-01), 433-460 0095-9782 26:5<433 1997 26 10953 https://doi.org/10.1007/BF02767600 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02767600 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mironenko Mikhail Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin Street 19, 117975, Moscow, Russia aut NATIONALLICENCE 700 1- Grant Steven Cold Regions Research & Engineering Laboratory, 72 Lyme Rd., 03755-1290, Hanover, New Hampshire aut NATIONALLICENCE 700 1- Marion Giles Cold Regions Research & Engineering Laboratory, 72 Lyme Rd., 03755-1290, Hanover, New Hampshire aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Springer US 26/5(1997-05-01), 433-460 0095-9782 26:5<433 1997 26 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer