Potentiometric titration of sodium sulfide and xanthate in diluted solutions when both are present
Abstract
As indicator electrode at the potential titration of diluted solution of the xantate Ag—Ag₂S and mercurial electrode were tested. The most convenient for analysis of xantate solutions not including the sulphide sulphur is a mercurial electrode. The presence of a caustic alkali soluble carbonates, sulphates, sulphites and thiosulphates does not effect the result of titration. The method was worked out as to the potential metrical titration of xantates and soluble sulphides in diluted solutions at their compatible presence. The method consists in determination of the sum of sulphide and xantate by means of potential metrical titration by sublimation with mercurial electrode and determination of sulphide by means of potential metrical titration by the double cyanide of Ag at the Ag—Ag₂S electrodes. On account of the simplicity and dependability the recommended method of analysis could be applied not only in the laboratory conditions but at works for to control the process of sulphidisation of oxidized ores.
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