DD 95-5:1986
Withdrawn
Date published:
Analysis of higher purity copper cathode Cu-CATH-1, Method for determination of sulphur by hydrogen sulphide evolution and spectrophotometry
Sulphur concentrations from 5 μg/g to 30 μg/g. Dissolution in a reducing acid containing antimony, which reduces the sulphur to hydrogen sulphide. The hydrogen sulphide is converted to zinc sulphide, which is then measured photometrically as methylene blue.
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77.120.30 Copper and copper alloys
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DD 95-5:1986
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