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Comparison of lead solubility in NaCl crystals from data obtained by different methods
Author(s) -
Dudnikova V. B.,
Urusov V. S.
Publication year - 1989
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170240112
Subject(s) - solvus , solubility , dissolution , impurity , electrical resistivity and conductivity , chemistry , atmospheric temperature range , conductivity , analytical chemistry (journal) , saturation (graph theory) , thermodynamics , mineralogy , crystallography , microstructure , chromatography , organic chemistry , physics , superalloy , mathematics , combinatorics , electrical engineering , engineering
Abstract The solvus of the NaCl: Pb 2+ system was found in the concentration range from 1.5 × 10 −3 to 1.9 × 10 −2 mol% at temperatures ranging from 375 to 430 °C from the data of flotation measurements of the crystal density. The heat of impurity dissolution equal to 2.0 ± ± 0.6 eV and the change in the vibrational entropy in the formation of the solid solution S v / K = 20 ± 10 were determined. Reasons for a difference in the estimates of lead solubility in NaCl, obtained from temperature dependences of light scattering and by other methods: measurement of the density, electric conductivity, and the electron‐microscopic decoration of the same crystals are discussed.