G - Physics – 01 – N
Patent
G - Physics
01
N
324/28
G01N 27/30 (2006.01) G01N 27/46 (1985.01)
Patent
CA 1216895
Abstract of the Disclosure The continuous monitoring of a monovalent metal in a molten substance containing same is effected by monitor- ing the electromotive force generated between a first electrolytically inert electrode in contact with the substance and a second electrolytically inert electrode in contact with a reference material which is separated from the substance by a solid electrolyte. The reference material comprises a metal in liquid state and a salt component selected from the group consisting of (a) a combined salt of the metal of the reference material and a further mono- valent metal, (b) a mixture of a first salt of the metal of the reference material and a second salt of the further monovalent metal, the first and second salts having a common anion, (c) a mixture of the first salt and the combined salt, and (d) a mixture of the second salt and the combined salt. The salt component is present in the form of a slurry containing a liquid phase in equilibrium with a solid phase, the liquid phase containing the metal of the reference material and the further monovalent metal in ionic form and the solid phase containing the first salt, second salt or combined salt. The metal in liquid state and the solid and liquid phases of the slurry provide a three-phase equilibrium fixing an activity of the further monovalent metal. The use of such a reference material enables one to obtain repro- ducible results and to minimize the polarizability of the electrodes. - 1 -
467056
Dubreuil Alain
Pelton Arthur D.
Corporation de L'ecole Polytechnique (la)
Ogilvy Renault
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