This standard specifies the method for the determination of phosphorus content in niobium. This standard is applicable to the determination of phosphorus content in niobium, the determination range: 0.001% ~ 0.05%.
GB/T 15076.7-1994 history
2020GB/T 15076.7-2020 Methods for chemical analysis of tantalum and niobium—Part 7:Determination of phospherus content in niobium—4-Formyloxy-pentyl ketone-[2] extraction separation phosphomolybdate blue spectrophotometry and inductively coupled plasma atomic emission spectrom
1994GB/T 15076.7-1994 Methods for chemical analysis of tantalum and niobium-Determination of phospherus content in niobium