DD 95-5:1986
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Analysis of higher purity copper cathode Cu-CATH-1 Method for determination of sulphur by hydrogen sulphide evolution and spectrophotometry
Hardcopy , PDF
07-31-1990
English
01-31-1986
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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