This standard specifies the method for the determination of phosphorus content in high-purity cathode copper. This standard applies to the determination of phosphorus content in high-purity cathode copper. Measuring range: 0.00005% to 0.001%.
GB/T 13293.6-1991 history
2008GB/T 5121.2-2008 Methods for chemical analysis of copper and copper alloys.Part 2:Determination of phosphorus content
GB/T 13293.6-1991 Higher purity copper cathode.Determination of phosphorus content.Heteropoly phosphato-vanadato-molybdicacid-crystal violet spectrophotometric method was changed to GB/T 5121.2-2008 Methods for chemical analysis of copper and copper alloys.Part 2:Determination of phosphorus content.