Method for judging purity of purified zinc sulphate solution use

Details Method for judging purity of purified zinc sulphate solution use Method for judging purity of purified zinc sulphate solution use

1975-07-22

1977-03-22

Yudkoff, Norman

Chemistry: physical processes

Physical processes

Crystallization

23253PC, 73 19, 204 1T, 204195R, G01N 3112, C25B 104, C25C 116, G01N 706

Patent

active

040134121

ABSTRACT:
A method and apparatus for judging the purity of a purified zinc sulphate solution used for the electrolytic production of zinc, which are based on the finding that the purity of the purified electrolyte has a fixed relationship with the ratio between the amount of hydrogen gas and the amount of oxygen gas generated by electrolysis of the purified electrolyte. According to the method and apparatus, a mixture of hydrogen gas and oxygen gas generated by the electrolysis of the purified zinc sulphate solution is charged in a combustion chamber of predetermined volume and ignited by a heater to ignite the hydrogen gas, and the difference between the internal pressures of the combustion chamber before and after the combustion of the hydrogen gas is detected for measuring the hydrogen gas content in the gas mixture.

REFERENCES:
patent: 3224837 (1965-12-01), Moyat
patent: 3681026 (1972-08-01), Holden
patent: 3853474 (1974-12-01), Austin
patent: 3945797 (1976-03-01), Mlinko et al.
Grutzner, "Oscillopolarographic Determination of Cadmium in Zinc," Anal. Abst. No. 4582, vol. 15, Aug. 1968.
Blutstem et al., "Alternating Current Linear Sweep and Stipping Voltammetry with Phase-Selective Second Harmonic Detection," Anal Chem., vol. 46, 1531-1538, Sept. 1974.

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